JP2000229408A - Method for manufacturing liquid discharge head, liquid discharge head, head cartridge, and liquid discharge recording apparatus - Google Patents

Abstract

(57) [Problem] To form an orifice plate without dividing the orifice plate in order to form a large number of discharge ports in the orifice plate and a large number of convex portions each of which enters the flow path. And a method for manufacturing a liquid discharge head. SOLUTION: A molten resin is extruded into a film form from a die of an extruder, and a roll provided with a relief mold having a predetermined shape is pressed on the extruded film resin, so that the resin film 3 is formed by the relief mold. Multiple outlets 4
One and a plurality of convex portions 45 are formed. Each convex part 4
5 is formed around each discharge port 41 independently for each discharge port 41. An orifice plate formed by forming a discharge port 41 and a convex portion 45 in the film-like resin 3 is bonded to the head main body by an adhesive so that the convex portion 45 enters and fits into a flow path provided in the head main body. Being done
A liquid ejection head is manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a liquid discharge head for performing recording by ejecting liquid as flying droplets and attaching the droplets to a recording medium, and a liquid manufactured by the method. The present invention relates to a discharge head, a head cartridge having the liquid discharge head, and a liquid discharge recording apparatus.

[0002] The present invention also provides a facsimile machine having a printer, a copying machine, a communication system, which performs recording on a recording medium such as paper, thread, fiber, cloth, leather, metal, plastic, glass, wood, ceramics, etc. A device such as a word processor having a printer unit, and a method of manufacturing a liquid discharge head applicable to an industrial recording device combined with various processing devices, and a liquid discharge head manufactured by the method, and a liquid discharge head manufactured by the method. Cartridge and a liquid ejection recording apparatus having the same. Note that “recording” in the present invention means not only forming an image having a meaning such as a character or a figure on a recording medium, but also forming an image having no meaning such as a pattern on a recording material. .

[0003]

2. Description of the Related Art Conventionally, an ink jet recording apparatus which performs recording by discharging ink as a recording liquid from an orifice formed in a liquid discharge head has been known as a recording apparatus excellent in terms of low noise, high speed recording and the like. Have been.

[0004] This ink jet recording apparatus includes:
A variety of proposals have been proposed, some of which have been commercialized with improvements, and others of which are currently being put to practical use.

FIG. 24 is a perspective view for explaining a liquid discharge head provided in a conventional ink jet recording apparatus.

As shown in FIG. 24, in a liquid discharge head provided in a conventional ink jet recording apparatus, an orifice plate 240 in which discharge ports (orifices) 241 for discharging ink are formed, and a discharge port 241 respectively communicate with each other. A top plate 260 in which a groove for forming the formed flow path 261 is formed, and a substrate 250 which forms a part of a wall surface of the flow path 261 and has an energy generating element 251 for generating energy for ejection. It is constituted by. A head main body 246 is formed by joining a top plate 260 to a surface of the substrate 250 on the side of the energy generating element 251 so as to form the flow path 261, and the respective ejection ports 241 are formed.
The orifice plate 240 is attached to the front end surface of the head main body 246 including the bonding surface 244a by an adhesive resin so that the orifice plate 240
Are joined.

The discharge ports 241 formed in the orifice plate 240 are minute, and the discharge ports 241 are an important factor that affects the discharge performance of the liquid discharge head. Therefore, the orifice plate 2 of the liquid ejection head
As for the performance of 40, it is necessary that the workability is good because the fine discharge port 241 is provided, and that the ink 40 has good ink resistance because it comes into direct contact with the ink.

[0008] With the recent progress in printing technology, high-speed, high-definition printing has been demanded. Therefore, the size (orifice diameter) of the discharge port 241 has become very small, and the discharge port 241 has a small size. 241 has been formed at a high density. As a result, as the material of the orifice plate 240, a resin film such as polysulfone, polyethersulfone, polyphenylene sulfide, or polyetheretherketone is used, and the method of forming an orifice on the resin film by micromachining by excimer laser ablation is most preferable. Commonly used.

However, the orifice plate 240
When the nozzles are bonded to the head body 246, the fine discharge ports 24
It is extremely difficult to connect 1 to the flow path 261 communicating with the discharge port 241 without any gap.

As a countermeasure against the above, as shown in FIG. 24, a convex portion 245 is formed around the discharge port 241 on the surface of the orifice plate 240 on the side of the head main body 246, and the entire convex portion 245 or the convex portion 245 is formed. A method has been used in which a part of the 245 is inserted into the channel 261 and fitted. According to this method, the adhesive resin used for bonding the orifice plate 240 is prevented from flowing into the discharge port 241 or the flow path 261. When forming the convex portion 245 on the orifice plate 240, the discharge port 241
In the same manner as in the formation of, processing by an excimer laser was performed.

[0011]

As described above, high-speed, high-definition recording has been demanded with the recent progress of recording technology, and the recording speed has been improved and the resolution has been increased. Therefore, the number of nozzles tends to increase gradually.

On the other hand, the most commonly used excimer laser for industrial use is a KrF laser,
The maximum practical output of the F laser is from 500 mJ to 700 mJ. When a laser of this class of output is used and a mask of a reduction optical system suitable for ensuring accuracy during fine processing is used, the effective area of laser processing is 1 / 2i.
It is about nch or less. Here, the area of laser processing required when manufacturing a liquid ejection head with a large number of nozzles is
If the head is larger than the effective processing area of the laser, one head cannot be processed at once, so the components of the liquid ejection head are divided into the size within the effective processing area of the laser,
Each of the divided components is separately processed.

In the case where the orifice plate 240 is divided and processed by drilling when forming the orifice 241 to manufacture the liquid discharge head shown in FIG. 24, the divided portions of the orifice plate 240 are connected to each other. If an error occurs at the joint of the orifice plate 240 at the time, the error of the joint becomes an error of the nozzle pitch in the liquid ejection head, and there is a problem that the recording quality of the liquid ejection head is deteriorated.

In the case where the orifice plate 240 is divided and processed in order to form the convex portion 245 by laser processing, if a joint is set in the convex portion 245, an error in the joint of the orifice plate 240 will occur in the flow path 261. There is a problem that the convex portion 245 to be entered is shifted. In this case, the convex portion 245 with respect to the flow path 261
The position of the discharge port 241 is displaced from that of the discharge port 241, resulting in a defect such as a failure in the shape of the discharge port 241 at the joint or an inability of the protrusion 245 to enter the flow path 261.

On the other hand, the projection 2
45 are formed independently, and a joint is set between the adjacent convex portions 245, the joint is overlapped, and the depth is twice the processing depth in the removal processing when forming the convex portion 245. In some cases, such a problem may occur that a groove is formed or a joint is undercut, so that a wall-shaped unprocessed portion is formed at that portion. Further, in order to form the convex portion 245 by laser processing, it is necessary to perform a large amount of removal processing on a wide surface of the orifice plate.
There is also a problem that many by-products such as carbon are generated, and it takes time and labor for post-processing of laser processing. In addition, a large-scale laser processing machine is required, which increases the cost of an apparatus for manufacturing a liquid discharge head.

An object of the present invention is to form a projection around a discharge port of an orifice plate when a liquid discharge head is manufactured by joining an orifice plate having a discharge port to a head body having a flow path. Then, in the method of manufacturing a liquid ejection head in which the projection enters the flow path of the head body and the orifice plate is joined to the head body, the orifice plate is divided and formed to form the ejection port and the projection. A method for manufacturing a liquid discharge head having no defects such as errors in the pitch of the orifices, defective shape of the discharge port, and inability of the protrusion to enter the flow path, a liquid discharge head, and a head having the liquid discharge head An object of the present invention is to provide a cartridge and a liquid discharge recording device.

[0017]

In order to achieve the above object, the present invention provides a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, and the energy generating elements are arranged respectively. A head body having a plurality of flow paths, a plurality of discharge ports respectively communicating with the flow paths, and around the discharge ports, each of the discharge ports so as to enter and fit into the flow paths. A method for manufacturing a liquid ejection head having an orifice plate joined to the head body with a plurality of independently formed protrusions, wherein a molten resin is formed by extrusion molding to produce the orifice plate. Extruding into a film shape to form a film-like resin, and pressing a roll provided with a relief mold of a predetermined shape on the surface of the film-like resin. Forming the orifice plate in which the plurality of discharge ports and the plurality of protrusions are formed in the film-shaped resin by simultaneously and continuously forming the discharge ports and the protrusions in the film-shaped resin. Applying an adhesive to a bonding surface of the orifice plate with the head main body or a bonding surface of the main body head with the orifice plate; and bonding the orifice plate to the main body head with the adhesive. And

In the above invention, when manufacturing the liquid discharge head, the molten resin is extruded into a film by extrusion molding to form a film-like resin, and a relief mold having a predetermined shape is formed on the surface of the film-like resin. The orifice plate is manufactured by simultaneously and continuously forming a discharge port on the film-shaped resin and a convex portion that enters and fits into the flow path of the head body by pressing the roll having the orifice. In order to form a large number of discharge ports and projections by laser processing, it is not necessary to divide and manufacture the orifice plate. Therefore, in the related art, when the orifice plate is divided and manufactured, there are problems such as errors in the pitch of the discharge ports due to errors in the joints of the orifice plates, poor shape of the discharge ports, and difficulty in entering the convex portion into the flow path. Occurred, but all those problems disappeared. Also,
When a joint is set between adjacent protrusions, a groove having a depth twice as large as the processing depth in the removal processing when forming the protrusion is formed, or a wall-shaped processing residue is formed at the joint. This eliminates the problem. Furthermore, since laser is not used when forming the discharge port and the convex portion, there is no generation of by-products such as carbon, so there is no need for post-processing, and there is no need for a large-scale laser processing machine. The cost of the device can be kept low.

The present invention also relates to a method of manufacturing a liquid discharge head having the above-mentioned structure, wherein the step of manufacturing an orifice plate includes a step of extruding a molten resin into a film by extrusion molding to form a film-shaped resin. By pressing a roll provided with a relief mold of a predetermined shape on the surface of the film-shaped resin, the film-shaped resin has a plurality of recesses for forming the discharge ports formed at the center thereof. Forming a plurality of discharge ports in the film-shaped resin by irradiating a laser to each bottom surface of the plurality of recesses.

Further, in the method of manufacturing a liquid discharge head according to the present invention, as a step of manufacturing an orifice plate, a step of extruding a molten resin into a film by extrusion molding to form a film-like resin; To
By pressing a roll provided with a relief mold having a predetermined shape, a step of forming a plurality of independent projections for forming the projections on the film-shaped resin, Forming a plurality of the discharge ports and the convex portions in the film-like resin by irradiating a laser to a central portion of the distal end surface.

Further, in the method of manufacturing a liquid discharge head according to the present invention, as a step of manufacturing an orifice plate, a step of extruding a molten resin into a film by extrusion molding to form a film-like resin; To
By pressing a roll provided with a relief mold of a predetermined shape, a continuous projection for forming the plurality of projections on the film-like resin and the discharge port arranged on the projection are formed. And forming a plurality of convex portions by irradiating a laser to portions of the continuous protruding portions other than portions corresponding to the discharge ports and the convex portions.

Further, in the method of manufacturing a liquid discharge head according to the present invention, the step of forming an orifice plate includes the steps of: extruding a molten resin into a film by extrusion molding to form a film-like resin; To
By pressing a roll provided with a relief mold of a predetermined shape, the film-shaped resin has a plurality of independent concave portions for forming the discharge ports, and for forming the plurality of convex portions. Forming a continuous protrusion, and forming a plurality of the protrusions by irradiating a laser to a portion of the continuous protrusion except a portion corresponding to the recess and the protrusion, Irradiating a laser to each bottom surface of the concave portion to form a plurality of the discharge ports in the film-like resin.

In the above-described method for manufacturing a liquid discharge head, the step after the step of pressing a roll against the surface of the film-like resin may be performed by irradiating a laser to each bottom surface of the plurality of recesses. Forming the plurality of discharge ports, and forming the plurality of protrusions on the film-like resin by irradiating a laser to a portion of the continuous protrusions other than a portion corresponding to the discharge ports and the protrusions. And a step of performing the operation.

Further, in the method of manufacturing a liquid discharge head according to the present invention, as a step of manufacturing an orifice plate, a step of extruding a molten resin into a film by extrusion molding to form a film-like resin; To
By pressing a roll provided with a relief mold having a predetermined shape, a step of forming continuous projections for forming the plurality of projections on the film-like resin, and forming the continuous projections, A step of forming a plurality of independent projections for forming the projections by irradiating a laser to a portion excluding a portion corresponding to the ejection port and the projections, and a step of forming the independent projections Forming a plurality of the discharge ports and the plurality of convex portions in the film-like resin by irradiating a laser to a central portion of a front end surface of the film.

In the above-described method for manufacturing a liquid discharge head, the step after the step of pressing a roll against the surface of the film-like resin is to irradiate a portion of the continuous projection portion corresponding to the discharge port with a laser. Forming a plurality of the discharge ports in the film-like resin, and by irradiating a laser to a portion of the continuous protrusion except a portion corresponding to the discharge ports and the protrusions, to the film-like resin. And forming a plurality of the protrusions.

In the invention as described above, a roll having a relief mold is pressed against the surface of the film-like resin when the orifice plate is manufactured, so that a convex portion having a concave portion and a convex portion having a concave portion are formed. By combining the process of forming a plurality of independent protrusions, continuous protrusions for forming protrusions, or discharge ports, and the step of laser processing, the orifice plate having a large number of discharge ports is divided. It can be manufactured as one piece without manufacturing. Therefore, even when an orifice plate having a large number of discharge ports is manufactured, there is no seam between the orifice plates, and the dimensional accuracy of the discharge ports and the projections is improved. This eliminates such a defect that the projection of the orifice plate cannot be fitted into the flow path of the head body. In addition, in the evaluation when recording was performed by a liquid ejection head configured using the manufactured orifice plate, the flying droplet generated by the failure of the joint portion of the orifice plate when the orifice plate was manufactured by dividing the orifice plate was evaluated. Good recording quality can be obtained without defects such as skew and unevenness of the recorded image.

[0027]

Next, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a perspective view for explaining a liquid discharge head to which a method of manufacturing a liquid discharge head according to a first embodiment of the present invention is applied.
FIG. 2 is a cross-sectional view of the liquid ejection head shown in FIG. 1 along a flow channel direction.

The liquid discharge head manufactured by the method of manufacturing a liquid discharge head according to the present embodiment is, as shown in FIG.
Head body 4 formed by bonding top plate 60 to the surface of substrate 50
6 and an orifice plate 40 joined to the front end face of the head body 46. A substrate (hereinafter, also referred to as a heater board) 50 has a plurality of energy generating elements (hereinafter, also referred to as heaters) 51 for generating thermal energy used for discharging a liquid such as ink.
And an Al wiring for supplying an electric signal to the energy generating element 51. This substrate 50 is made of Si
A plurality of energy generating elements 51 and the Al
The wiring is formed by a film forming technique.

On one surface of the top plate 60, grooves for forming a plurality of flow paths 61 in which the energy generating elements 51 are respectively arranged, and ink supplied to the respective flow paths 61 are temporarily held. A groove for forming a liquid chamber 62 is formed. Further, a supply port 64 for supplying ink into the liquid chamber 62 is formed in the top plate 60. By joining the substrate 50 and the top plate 60 such that the energy generation elements 51 are arranged in the respective flow paths 61, the head body 46 including the plurality of flow paths 61 and the plurality of energy generation elements 51 is configured. Have been. On the front end face of the head main body 46, that is, as shown in FIG. 2, the joining surface 44a of the substrate 50 with the orifice plate 40 and the joining surface 4 of the top plate 60 with the orifice plate 40
The opening of each flow channel 61 is arranged on the surface including 4b.

On the other hand, the orifice plate 40 is formed with a plurality of discharge ports (hereinafter, also referred to as orifices) 41 each communicating with the flow path 61. A plurality of independent convex portions 45 are formed for each discharge port 41 around the discharge port 41 on the joint surface of the orifice plate 40 with the head main body 46. The orifice plate 40 is joined to the joining surfaces 44a and 44b by the adhesive resin 42 as an adhesive in a state where the respective convex portions 45 enter the flow channel 61 and the convex portions 45 are fitted into the flow channel 61. .

In this liquid discharge head, bubbles are generated on the energy generating element 51 by the thermal energy generated from the energy generating element 51 acting on the ink in the flow path 61, and the generation of the bubbles is performed by utilizing the generation of the bubbles. Ink is ejected from the outlet 41.

FIG. 3 is a diagram schematically showing a part of a production line used in the method for producing a liquid discharge head according to the first embodiment of the present invention. The production line shown in FIG. 3 is for producing the orifice plate 40 shown in FIGS. In this production line, a molten resin is extruded into a film by extrusion molding, and a roll provided with a relief mold of a predetermined shape is pressed against the surface of the extruded film resin, thereby forming a desired surface on the surface of the film resin. The steps up to the formation of the pattern having the shape shown in FIG.

As shown in FIG. 3, a film-like resin 3 is formed by extruding a molten resin from a die 2 of an extruder 1 into a film, and the film-like resin 3 is placed between a cooling roll 5 and a nip roll 6. It is pinched and pressed by those rolls. On the surface of the cooling roll 5, a relief mold 4 having a shape corresponding to the discharge port 41 and the convex portion 45 shown in FIGS. 1 and 2 is attached. This relief type 4
Thereby, a desired shape is continuously formed on the surface of the film-shaped resin 3.

The film-shaped resin 3 having a desired shape formed on the surface by the relief mold 4 and cooled by the cooling roll 5 passes through several rolls and two take-up rolls 7 and then takes up a winding roll 8 Is wound up in a roll.

In the method of manufacturing a liquid discharge head according to this embodiment, a polysulfone resin (Udel P3900 manufactured by Amoco) is used as the resin material extruded from the extruder 1. As the resin material extruded from the extruder 1, that is, the material of the film-like resin 3, it is preferable to use a thermoplastic polymer. Further, specifically, the film-like resin 3
It is preferable to use any one of polyethersulfone, polyphenylene sulfide, and polyetheretherketone as the material.

Next, a method of manufacturing the orifice plate 40 will be described.

First, a film-like resin 3 is formed by extruding a polysulfone resin from the die 2 to a thickness of 50 μm under the following processing conditions (A). The film-shaped resin 3 is pressed by a cooling roll 5 at a temperature of 15 ° C. provided with a relief mold 4 on its surface and a nip roll 6 to cool the film-shaped resin 3.

Extrusion processing conditions (A) Die opening: 0.5 mm Extruder set temperature: Rear 315 ° C Middle part 360 ° C Head and die 370 ° C Cooling roll temperature: 15 ° C Extruded thickness: 50 μm Nip pressure (air gauge pressure): 2 kgf / cm ² FIG. 4 and FIG. 5 are a plan view and a cross-sectional view of the film-shaped resin 3 produced by the production line shown in FIG.
FIG. 4A is a plan view of the film-shaped resin 3 and FIG.
FIG. 4B is a cross-sectional view taken along line AA ′ of FIG. Also,
FIG. 5A is an enlarged plan view of a portion B of the film-like resin shown in FIG. 4A, and FIG.
It is a CC 'line sectional view of (a).

When the relief mold 4 of the cooling roll 5 is pressed against the surface of the film-like resin 3, the relief mold 4 causes the relief mold 4 to be used as shown in FIGS. 4 (a), 4 (b), 5 (a) and 5. As shown in (b), a plurality of discharge ports 41 and projections 45 are simultaneously formed in the film-shaped resin 3 continuously in the extrusion direction of the film-shaped resin 3.

The pitch of the projections 45 is an interval corresponding to a resolution of 600 dpi, and the outer shape of the projections 45 is a quadrangular prism. The external dimensions of the convex portion 45 are 30 μ
m, the width is 30 μm, and the height is 10 μm. The shape of the orifice 41 is a truncated cone and the orifice 4
The diameter of the circle at the end face on the side of the convex portion 45 is φ25 μm,
The diameter of the circle at the end face opposite to the convex 45 side is φ20μ.
m. The relief mold 4 is manufactured so that the orifice 41 and the convex portion 45 having such a shape and dimensions are simultaneously and continuously formed on the film-shaped resin 3.

After the orifice 41 and the convex portion 45 are formed on the film-shaped resin 3 by the relief mold 4, a water-repellent layer is formed on the surface (face surface) of the film-shaped resin 3 on the side opposite to the convex portion 45 side. As the water repellent, CTX-CZ5A manufactured by Asahi Glass Co., Ltd. was used. When forming a water-repellent layer on the face surface of the film-shaped resin 3, first, the face surface is made hydrophilic by corona treatment, and then the film-shaped resin is applied using a microgravure coater manufactured by Yasui Seiki Co., Ltd. as a coating device. A water repellent is applied to the face of the resin 3. Here, the step of applying the water repellent and the step of pre-baking the applied water repellent at 80 ° C. were performed continuously so that the final thickness of the water repellent layer was 0.1 μm. The film-shaped resin 3 wound up in a roll after the application and pre-baking steps are completed is placed in a heating furnace for 150 minutes.
By heating at a temperature of 5 ° C. for 5 hours, a water-repellent layer is formed on the face surface of the film-shaped resin 3.

In the method of manufacturing a liquid discharge head according to the present embodiment, the step of pressing the relief mold 4 against the film-like resin 3 and the step of forming a water-repellent layer on the film-like resin 3 are performed separately. These two steps may be performed in one step. For example, in the step of pressing the relief mold 4 against the film-shaped resin 3, a water-repellent agent is supplied to the surface of the film-shaped resin 3 on the nip roll 6 side to form a water-repellent layer on the surface, and the film-shaped resin 3 is pressed. Processing may be performed. Alternatively, a coating roll for applying the water repellent is set at a position before the film resin 3 is wound by the winding roll 8, and the water repellent is applied to the film resin 3 using the coating roll. You may.

Thus, the discharge port 41 and the projection 45
Is formed and the film-shaped resin 3 wound into a roll is
Cut to the required size for each liquid ejection head,
The orifice plate 40 shown in FIGS. 1 and 2 is manufactured.

Next, a method of manufacturing the liquid discharge head after the orifice plate 40 is manufactured will be described.

After the orifice plate 40 is manufactured, the orifice plate 40 is bonded to the head body 46 manufactured in a process different from the above-described process by using an adhesive. As the adhesive used here, the adhesive is irradiated with UV (ultraviolet light) to form a B stage (curing intermediate state) while maintaining tackiness (viscosity), and the adhesive is cured and shrunk, and then heated and pressed. Alternatively, an epoxy-based adhesive capable of bonding members to each other by further UV irradiation to the adhesive is used. Such an adhesive can be adhered only by heating and pressing without forming a B stage.

First, the epoxy adhesive as described above is transferred to the joining surfaces 44a and 44b of the head body 46 by a transfer method. Next, the transferred adhesive is irradiated with ultraviolet rays of 1 mW / cm ² for 60 seconds to make the adhesive B-stage, and the curing shrinkage of the adhesive is terminated while maintaining the tackiness of the adhesive.

Next, each of the convex portions 45 of the orifice plate 40 is connected to the flow channel 61 corresponding to each of the convex portions 45.
And the protrusion 45 is fitted to the front end of the flow channel 61. The fitting between the convex portion 45 and the flow path 61 was a loose fit.

Next, the convex portion 4 of the orifice plate 40
1 kg from orifice plate 40 to the orifice plate 40
/ Cm ² , the orifice plate 40 and the head body 46 are brought into close contact with each other.
At a temperature of 0 ° C., the orifice plate 40
Is heated and pressed to complete the curing of the adhesive.

Through the steps described above, the liquid discharge head shown in FIGS. 1 and 2 is manufactured. According to the method of manufacturing the liquid ejection head of the present embodiment, one orifice plate 40 is manufactured as an integral one without being divided and manufactured, so that the orifice plate 40 having a large number of ejection ports 41 is manufactured. In this case, there is no seam between the orifice plates 40, and the dimensional accuracy of the discharge ports 41 and the convex portions 45 is improved. This eliminates a defect that the convex portion 45 of the orifice plate 40 cannot be fitted into the flow channel 61 of the head main body 46. In addition, in the evaluation when recording was performed using the manufactured liquid ejection head, in the case where the orifice plate was divided and manufactured, the deviation of the flying droplet caused by the failure of the joint portion of the orifice plate and the unevenness of the recorded image were observed. Good recording quality was obtained without such defects. Furthermore, since no laser is used to form the orifice 41 and the convex portion 45, no post-processing is required because no by-product such as carbon is generated, and a large-scale laser processing machine is not required.
The cost of the apparatus for manufacturing the liquid ejection head can be reduced.

(Second Embodiment) FIG. 6 and FIG.
It is a figure for explaining the manufacturing method of the liquid discharge head of a 2nd embodiment of the present invention. The method for manufacturing a liquid ejection head according to the present embodiment is a method for manufacturing a liquid ejection head having the same configuration and shape as the liquid ejection head manufactured by the manufacturing method according to the first embodiment. hand,
The main difference is that the discharge port is formed by laser processing. The following description focuses on the differences from the first embodiment.

Also in the method of manufacturing a liquid discharge head according to the present embodiment, a film-like resin for manufacturing an orifice plate is formed by the manufacturing line shown in FIG. 3 of the first embodiment. Here, instead of the relief mold 4 used in the first embodiment, a cooling roll 5 having a relief mold having another predetermined shape different from the relief mold 4 is used. FIG. 6A is a plan view of a film-shaped resin formed in a predetermined shape by pressing the polysulfone resin extruded from the die 2 of the extruder 1 by the relief mold provided on the cooling roll 5. FIG. 6
FIG. 7B is a cross-sectional view taken along line AA ′ of FIG. FIG.
FIG. 7A is an enlarged plan view of a portion B of the film-shaped resin shown in FIG. 6A, and FIG. 7A ′ is a cross-sectional view taken along line CC ′ of FIG. 7A. .

First, a polysulfone resin was passed through the die 2 to a thickness of 5 mm under the same extrusion processing conditions (A) as in the first embodiment.
By extruding into a film so as to have a thickness of 0 μm, a film-like resin 3 is formed. The film-like resin 3 is
While being pressed by a cooling roll 5 at a temperature of 15 ° C. and a nip roll 6 provided with the above-mentioned relief mold on the surface, it is cooled at the same time. 6 (a), 6 (b) and 7 by the relief mold provided on the cooling roll 5.
As shown in FIG. 7A and FIG. 7A ′, the film-shaped resin 3 is provided with a plurality of independent projections 45,
And a plurality of recesses 47a respectively arranged in the center of the film-shaped resin 3 are continuously formed in the extrusion direction of the film-shaped resin 3. Each recess 47a is for forming the orifice 41. The pitch and the outer dimensions of the projection 45 are the first
The depth of the recess 47a is 40 μm.
It has become. A relief type provided on the cooling roll 5 is manufactured so that such a convex portion 45 and a concave portion 47a are simultaneously formed on the film-shaped resin 3.

Next, a water-repellent layer is formed on the surface (face surface) of the film-shaped resin 3 on the side opposite to the projection 45 side by the same method as in the first embodiment. As a water-repellent agent, CTX-CZ5A manufactured by Asahi Glass Co., Ltd. was used.

Next, a process of manufacturing an orifice plate after forming a water-repellent layer on the film-like resin 3 will be described with reference to FIG. 7 (b) and 7 (c) are enlarged plan views of a portion B of the film-like resin shown in FIG. 6 (a), and FIG. FIG. 7C is a cross-sectional view taken along line CC ′ of FIG. 7C.

As shown in FIG. 7B ', by irradiating the laser 13 onto the bottom surface of each concave portion 47a, as shown in FIGS. 7C and 7C', A through hole penetrating through the film-like resin 3 is formed on the bottom surface. As a result, the orifice 41 having an opening dimension of φ20 μm on the side opposite to the projection 45 is formed in the film-shaped resin 3.

FIG. 8 shows that the orifice 4
FIG. 2 is a diagram schematically illustrating a laser processing apparatus for forming a laser beam processing device 1; The laser processing apparatus shown in FIG. 8 includes an excimer laser oscillator 9, a condensing lens 11 for condensing a laser 13 emitted from the excimer laser oscillator 9, and a laser 13 transmitted through the condensing lens 11 in a film-like resin. 3 is provided with a mask 12 for irradiating a predetermined portion. Laser 13 emitted from excimer laser oscillator 9
Is irradiated to the film-shaped resin 3 through the condenser lens 11 and the mask 12. The film-shaped resin 3 is housed in a rolled state. Here, the film-shaped resin 3 is unwound from the roll-shaped film-shaped resin 3.
Is flattened, and a flat portion of the film-shaped resin 3 is irradiated with the laser 13.

In the present embodiment, the apparatus of the production line shown in FIG. 1 and the laser processing apparatus shown in FIG. 8 are separate from each other, but before the winding roll 8 in the production line shown in FIG. Alternatively, the laser processing apparatus shown in FIG. 8 can be arranged.

Here, the depth of the concave portion 47 a is made larger than the thickness of the film-shaped resin 3, and
In the case where the wall thickness for opening 1 is reduced to a required dimensional tolerance, it is not necessary to align the portion to be irradiated with the laser 13 with the bottom surface of the concave portion 47a. Good. This simplifies the process of forming the orifice 41, and reduces the manufacturing cost of the liquid ejection head and the manufacturing apparatus.

Next, the orifice 41 and the convex portion 45 are formed, and the film-shaped resin 3 wound into a roll is cut into a required 4-inch size for each liquid discharge head, and is cut as shown in FIGS. The orifice plate 40 shown in FIG.

Next, similarly to the method described in the first embodiment, the orifice plate 40 is epoxied so that the convex portion 45 of the orifice plate 40 enters and fits into the flow path 61 of the head body 46. The liquid ejection head described with reference to FIGS. 1 and 2 is manufactured by adhering to the head main body 46 with a system adhesive.

According to the manufacturing method of the liquid discharge head of the present embodiment, as in the first embodiment, one orifice plate 40 is manufactured as one unit without being divided and manufactured. When the orifice plate 40 having the discharge ports 41 of the
There is no seam of 0, and the dimensional accuracy of the discharge port 41, the convex portion 45, and the like is improved. Thereby, the orifice plate 4
The defect that the 0 convex portion 45 cannot be fitted into the flow path 61 of the head main body 46 is eliminated. In addition, in the evaluation when recording was performed using the manufactured liquid ejection head, in the case where the orifice plate was divided and manufactured, the deviation of the flying droplet caused by the failure of the joint portion of the orifice plate and the unevenness of the recorded image were observed. Good recording quality was obtained without such defects.

(Third Embodiment) FIGS. 9 and 10
FIG. 11 is a diagram for describing a method for manufacturing the liquid ejection head according to the third embodiment of the present invention. The method for manufacturing a liquid ejection head according to the present embodiment is a method for manufacturing a liquid ejection head having the same configuration and shape as the liquid ejection head manufactured by the manufacturing method according to the first embodiment. The main difference is that the discharge port is formed by laser processing. Further, as compared with the manufacturing method of the second embodiment,
The difference is that a discharge port is formed without forming a concave portion in the film-like resin by pressing of a relief type. Below,
The description will focus on the differences from the first and second embodiments.

Also in the method of manufacturing a liquid discharge head according to the present embodiment, a film-like resin for manufacturing an orifice plate is formed by the manufacturing line shown in FIG. 3 of the first embodiment. Here, instead of the relief mold 4 used in the first embodiment, a cooling roll 5 having a relief mold having another predetermined shape different from the relief mold 4 is used. FIG. 9A is a plan view of a film-shaped resin formed into a predetermined shape by pressing the polysulfone resin extruded from the die 2 of the extruder 1 by the relief mold provided on the cooling roll 5. FIG. 9
FIG. 10B is a sectional view taken along line AA ′ of FIG. FIG.
FIG. 10A is an enlarged plan view of a portion B of the film-shaped resin shown in FIG. 11A, and FIG.
It is a CC 'line sectional view of (a).

First, the polysulfone resin was passed through the die 2 to a thickness of 5 mm under the same extrusion processing conditions (A) as in the first embodiment.
By extruding into a film so as to have a thickness of 0 μm, a film-like resin 3 is formed. The film-like resin 3 is
While being pressed by a cooling roll 5 at a temperature of 15 ° C. and a nip roll 6 provided with the above-mentioned relief mold on the surface, it is cooled at the same time. 9A, 9B, and 10 by the relief mold provided on the cooling roll 5.
As shown in FIG. 10A and FIG. 10A ′, a plurality of independent projections 48 a for forming the projections 45 on the film-shaped resin 3 are continuously formed in the extrusion direction of the film-shaped resin 3. It is formed. The pitch and the outer dimensions of the projection 48a are the same as those of the projection 45 finally formed on the film-shaped resin 3. A relief type provided on the cooling roll 5 is manufactured so that such a protrusion 48a is formed on the film-shaped resin 3.

Next, the projection 48a of the film-like resin 3 is formed.
A water-repellent layer is formed on the surface opposite to the side (face surface) by the same method as in the first embodiment. As a water repellent,
Asahi Glass Co., Ltd. CTX-CZ5A was used.

Next, a process of manufacturing an orifice plate after forming a water-repellent layer on the film-like resin 3 will be described with reference to FIG. FIG. 10 (b), FIG. 10 (c)
FIG. 10B is an enlarged plan view of a portion B of the film-like resin shown in FIG. 9A, and FIG.
FIG. 10 (c ′) is a sectional view taken along line C ′ of FIG.
It is C 'line sectional drawing.

As shown in FIG. 10 (b '), by irradiating the laser 13 to the center of the tip end surface of each projection 48a, as shown in FIGS. 10 (c) and 10 (c'). A through hole, that is, the orifice 41, which penetrates the film-like resin 3, is formed at the center of each of the projections 48a. As a result, the orifice 41 having an opening dimension of φ20 μm on the side opposite to the projection 45 is formed in the film-shaped resin 3. Here, the orifice 41 is formed in the film-shaped resin 3 by the same method as that of the second embodiment, using the laser processing apparatus shown in FIG. 8 of the second embodiment.

Next, the film-shaped resin 3 formed with the orifice 41 and the convex portion 45 and wound in a roll shape is cut into a required 4-inch size for each liquid discharge head, and FIG. 1 and FIG. The orifice plate 40 shown in FIG.

Next, similarly to the method described in the first embodiment, the orifice plate 40 is epoxied so that the convex portion 45 of the orifice plate 40 enters and fits into the flow path 61 of the head body 46. The liquid ejection head described with reference to FIGS. 1 and 2 is manufactured by adhering to the head main body 46 with a system adhesive.

According to the method of manufacturing a liquid discharge head of the present embodiment, as in the first embodiment, one orifice plate 40 is manufactured as one unit without being divided and manufactured. When the orifice plate 40 having the discharge ports 41 of the
There is no seam of 0, and the dimensional accuracy of the discharge port 41, the convex portion 45, and the like is improved. Thereby, the orifice plate 4
The defect that the 0 convex portion 45 cannot be fitted into the flow path 61 of the head main body 46 is eliminated. In addition, in the evaluation when recording was performed using the manufactured liquid ejection head, in the case where the orifice plate was divided and manufactured, the deviation of the flying droplet caused by the failure of the joint portion of the orifice plate and the unevenness of the recorded image were observed. Good recording quality was obtained without such defects.

(Fourth Embodiment) FIGS. 11 and 12
FIG. 14 is a diagram for describing a method for manufacturing the liquid ejection head according to the fourth embodiment of the present invention. The method for manufacturing a liquid ejection head according to the present embodiment is a method for manufacturing a liquid ejection head having the same configuration and shape as the liquid ejection head manufactured by the manufacturing method according to the first embodiment. The main difference is that a laser is used to form a projection around the discharge port. The following description focuses on the differences from the first embodiment.

Also in the method of manufacturing a liquid discharge head according to the present embodiment, a film-like resin for manufacturing an orifice plate is formed by the manufacturing line shown in FIG. 3 of the first embodiment. Here, instead of the relief mold 4 used in the first embodiment, a cooling roll 5 having a relief mold having another predetermined shape different from the relief mold 4 is used. FIG. 11A is a plan view of a film-shaped resin formed into a predetermined shape by pressing the polysulfone resin extruded from the die 2 of the extruder 1 by the relief mold provided on the cooling roll 5. FIG.
FIG. 12B is a sectional view taken along line AA ′ of FIG. FIG. 12A is an enlarged plan view of a portion B of the film-shaped resin shown in FIG. 11A, and FIG.
It is CC 'line sectional drawing of 2 (a).

First, the polysulfone resin was passed through the die 2 to a thickness of 5 mm under the same extrusion processing conditions (A) as in the first embodiment.
By extruding into a film so as to have a thickness of 0 μm, a film-like resin 3 is formed. The film-like resin 3 is
While being pressed by a cooling roll 5 at a temperature of 15 ° C. and a nip roll 6 provided with the above-mentioned relief mold on the surface, it is cooled at the same time. 11 (a), 11 (b), and 11 (b) by the relief mold provided on the cooling roll 5.
As shown in FIG. 12A and FIG. 12A ′, the projections 48 b and the projections 48 b continuous in the extrusion direction of the film-like resin 3 for forming the projections 45 on the film-like resin 3 are formed. A plurality of orifices 41 arranged are formed. The external dimensions of the protrusion 48b are 30 μm in width and 10 μm in height. A relief type provided on the cooling roll 5 is manufactured so that the projection 48 b and the orifice 41 are formed on the film-shaped resin 3.

Next, the projecting portion 48b of the film-like resin 3 is formed.
A water-repellent layer is formed on the surface opposite to the side (face surface) by the same method as in the first embodiment. As a water repellent,
Asahi Glass Co., Ltd. CTX-CZ5A was used.

Next, a process of manufacturing an orifice plate after forming a water-repellent layer on the film-like resin 3 will be described with reference to FIG. FIG. 12 (b), FIG. 12 (c)
FIG. 12B is an enlarged plan view of a portion B of the film-like resin shown in FIG. 11A, and FIG.
FIG. 12 (c ′) is a sectional view taken along line C ′ of FIG.
It is C 'line sectional drawing.

As shown in FIG. 12B ', the protrusion 48
By irradiating the laser 13 to a portion other than the portion corresponding to the orifice 41 and the convex portion 45 on the distal end surface of b, as shown in FIGS. 12 (c) and 12 (c ′),
Unnecessary portions of the protrusions 48b are removed, and a plurality of independent protrusions 45 are formed for each orifice 41. Here, the convex portions 45 are formed using the laser processing apparatus shown in FIG. 8 of the second embodiment. However, instead of the mask 12 used in the second embodiment, the convex portions 45 are formed. Laser processing is performed using another mask having a predetermined pattern.

Next, the film-shaped resin 3 formed with the orifice 41 and the convex portion 45 and wound into a roll shape is cut into a required 4-inch size for each liquid discharge head, and FIG. 1 and FIG. The orifice plate 40 shown in FIG.

Next, similarly to the method described in the first embodiment, the orifice plate 40 is epoxied so that the convex portion 45 of the orifice plate 40 enters and fits into the flow path 61 of the head main body 46. The liquid ejection head described with reference to FIGS. 1 and 2 is manufactured by adhering to the head main body 46 with a system adhesive.

According to the method of manufacturing the liquid discharge head of the present embodiment, as in the first embodiment, one orifice plate 40 is manufactured as one unit without being divided and manufactured. When the orifice plate 40 having the discharge ports 41 of the
There is no seam of 0, and the dimensional accuracy of the discharge port 41, the convex portion 45, and the like is improved. Thereby, the orifice plate 4
The defect that the 0 convex portion 45 cannot be fitted into the flow path 61 of the head main body 46 is eliminated. In addition, in the evaluation when recording was performed using the manufactured liquid ejection head, in the case where the orifice plate was divided and manufactured, the deviation of the flying droplet caused by the failure of the joint portion of the orifice plate and the unevenness of the recorded image were observed. Good recording quality was obtained without such defects.

(Fifth Embodiment) FIG. 13 to FIG.
It is a figure for explaining the manufacturing method of the liquid discharge head of a 5th embodiment of the present invention. The method for manufacturing a liquid discharge head according to the present embodiment is a method for manufacturing a liquid discharge head having the same configuration and shape as the liquid discharge head manufactured by the manufacturing method according to the first embodiment.

In the method of manufacturing a liquid discharge head according to the present embodiment, a film-like resin for manufacturing an orifice plate is formed by the manufacturing line shown in FIG. 3 of the first embodiment. Here, instead of the relief mold 4 used in the first embodiment, a cooling roll 5 having a relief mold having another predetermined shape different from the relief mold 4 is used. FIG. 13A is a plan view of a film-shaped resin formed in a predetermined shape by pressing the polysulfone resin extruded from the die 2 of the extruder 1 by the relief mold provided on the cooling roll 5. FIG.
FIG. 13B is a cross-sectional view taken along line AA ′ of FIG. FIG. 14 (a) is an enlarged plan view of a portion B of the film-shaped resin shown in FIG. 13 (a), and FIG.
It is CC 'line sectional drawing of 4 (a).

First, the polysulfone resin is passed through the die 2 to a thickness of 5 mm under the same extrusion processing conditions (A) as in the first embodiment.
By extruding into a film so as to have a thickness of 0 μm, a film-like resin 3 is formed. The film-like resin 3 is
While being pressed by a cooling roll 5 at a temperature of 15 ° C. and a nip roll 6 provided with the above-mentioned relief mold on the surface, it is cooled at the same time. As a result, the relief type provided on the cooling roll 5 causes the film-shaped resin 3 to be protruded as shown in FIGS. 13 (a), 13 (b), 14 (a) and 14 (a '). For forming the portion 45, a projection 48b continuous in the direction of extrusion of the film-like resin 3 and a plurality of recesses 47b arranged in the projection 48b are formed.
Each recess 47a is for forming the orifice 41, and the plurality of recesses 47b are independent of each other. The external dimensions of the protrusion 48b are 30 μm in width and 10 μm in height. A relief mold provided on the cooling roll 5 is manufactured so that the projection 48b and the recess 47b are formed in the film-shaped resin 3.

Next, the projecting portion 48b of the film-like resin 3 is formed.
A water-repellent layer is formed on the surface opposite to the side (face surface) by the same method as in the first embodiment. As a water repellent,
Asahi Glass Co., Ltd. CTX-CZ5A was used.

Next, a process of forming an orifice plate after forming a water-repellent layer on the film-like resin 3 will be described with reference to FIGS. FIG. 14 (b),
FIGS. 14 (c), 15 (a) and 15 (b) are enlarged plan views of portion B of the film-like resin shown in FIG. 13 (a). FIG. 14B ′ is CC ′ of FIG. 14B.
14 (c ') is a cross-sectional view taken along line CC' of FIG. 14 (c), FIG. 15 (a ') is a cross-sectional view taken along line CC' of FIG. 15 (a), and FIG. ') Is a cross-sectional view taken along line CC' in FIG. 15B.

As shown in FIG. 14B, the projection 48
By irradiating the laser 13 to a portion other than the portion corresponding to the concave portion 47b and the convex portion 45 on the distal end surface of b,
As shown in FIGS. 14C and 14C ', unnecessary portions of the protrusions 48b are removed, and a plurality of independent protrusions 45 are formed for each of the recesses 47b.

Next, as shown in FIG. 15 (a '), the bottom surface of each concave portion 47b is irradiated with the laser 13 so that each of the concave portions 47b is irradiated with the laser 13 as shown in FIGS. 15 (b) and 15 (b'). A through hole penetrating the film-shaped resin 3 is formed on the bottom surface of the concave portion 47b. As a result, the orifice 41 having an opening dimension of φ20 μm on the side opposite to the projection 45 is formed in the film-shaped resin 3.

Also in this embodiment, the projection 45 and the orifice 41 are formed by using the laser processing apparatus shown in FIG. 8 of the second embodiment. When forming the convex portion 45,
In place of the mask 12 used in the second embodiment, laser processing is performed using another mask having a predetermined pattern for forming the convex portion 45 as in the fourth embodiment. When forming the orifice 41, the same mask 1 as in the second embodiment is used to open the bottom of the recess 47b.
2 is used.

As in the case of the second embodiment, the depth of the concave portion 47b is increased with respect to the thickness of the
In the case where the thickness of the opening of the orifice 41 is reduced to a required dimensional tolerance in Step 3, it is not necessary to align the portion irradiated with the laser 13 with the bottom surface of the concave portion 47b.
The laser 13 may be applied to the entire bottom surface of the recess 47b.
This simplifies the process of forming the orifice 41, and reduces the manufacturing cost of the liquid ejection head and the manufacturing apparatus.

Next, the film-shaped resin 3 formed with the orifice 41 and the convex portion 45 and wound in a roll shape is cut into a required 4-inch size for each liquid discharge head, and FIG. 1 and FIG. The orifice plate 40 shown in FIG.

Next, similarly to the method described in the first embodiment, the orifice plate 40 is epoxied so that the convex portion 45 of the orifice plate 40 enters and fits into the flow path 61 of the head main body 46. The liquid ejection head described with reference to FIGS. 1 and 2 is manufactured by adhering to the head main body 46 with a system adhesive.

According to the method of manufacturing the liquid discharge head of the present embodiment, as in the first embodiment, one orifice plate 40 is manufactured as an integral unit without being divided and manufactured. When the orifice plate 40 having the discharge ports 41 of the
There is no seam of 0, and the dimensional accuracy of the discharge port 41, the convex portion 45, and the like is improved. Thereby, the orifice plate 4
The defect that the 0 convex portion 45 cannot be fitted into the flow path 61 of the head main body 46 is eliminated. In addition, in the evaluation when recording was performed using the manufactured liquid ejection head, in the case where the orifice plate was divided and manufactured, the deviation of the flying droplet caused by the failure of the joint portion of the orifice plate and the unevenness of the recorded image were observed. Good recording quality was obtained without such defects.

(Sixth Embodiment) FIGS. 16 and 17
FIG. 15 is a diagram for describing the method for manufacturing the liquid ejection head according to the sixth embodiment of the present invention. The method for manufacturing a liquid discharge head according to the present embodiment is a method for manufacturing a liquid discharge head having the same configuration and shape as the liquid discharge head manufactured by the manufacturing method according to the first embodiment. In the manufacturing method of the present embodiment, the order of the step of forming an orifice by laser processing and the step of forming a convex portion by laser processing in the manufacturing method of the fifth embodiment are interchanged.

In the manufacturing method of the liquid discharge head according to the present embodiment, the projection 48b shown in FIG. 13 of the fifth embodiment is also operated by the manufacturing line shown in FIG. 3 of the first embodiment.
Then, the film-shaped resin 3 on which the concave portions 47b are formed is produced.

Next, the protrusion 48b of the film-like resin 3 is formed.
A water-repellent layer is formed on the surface opposite to the side (face surface) by the same method as in the first embodiment. As a water repellent,
Asahi Glass Co., Ltd. CTX-CZ5A was used.

Next, a process of manufacturing an orifice plate after forming a water-repellent layer on the film-like resin 3 will be described with reference to FIGS. FIG. 16A,
16 (b), 16 (c), 17 (a) and 1
7 (b) is the film-like resin B shown in FIG. 13 (a).
It is the top view which expanded the part. FIG.
16A is a cross-sectional view taken along the line CC ′, and FIG.
FIG. 16B is a sectional view taken along the line CC ′, and FIG.
17C is a sectional view taken along the line CC ′, and FIG.
FIG. 17A is a cross-sectional view taken along the line CC ′, and FIG.
It is a CC 'line sectional view of (b).

As shown in FIGS. 16 (a) and 16 (a '), the projection 48b explained in the fifth embodiment is applied to the film-like resin 3 by the pressure of the relief type provided on the cooling roll 5. And a recess 47b.

As shown in FIG. 16 (b '), by irradiating the laser 13 to the bottom surface of each recess 47b,
As shown in FIG. 16C and FIG. 16C ′, a through hole penetrating the film-shaped resin 3 is formed on the bottom surface of each concave portion 47b. As a result, the orifice 41 having an opening dimension of φ20 μm on the side opposite to the projection 45 is formed in the film-shaped resin 3.

Next, as shown in FIG. 17 (a '), the orifice 41 and the projection 4 on the tip surface of the projection 48b.
By irradiating the laser 13 to portions other than the portion corresponding to 5, unnecessary portions of the protrusions 48 b are removed as shown in FIGS. Form a plurality of independent convex portions 45. Also in this embodiment, similarly to the fifth embodiment,
The projection 45 and the orifice 41 are formed by using the laser processing apparatus of the second embodiment shown in FIG.

In the manufacturing method of the liquid discharge head of the present embodiment, similarly to the second embodiment, the depth of the concave portion 47 b is made larger than the thickness of the film-like resin 3, and the orifice 41 is opened by the laser 13. In the case where the thickness to be made is reduced to a required dimensional tolerance, the portion irradiated with the laser 13 is formed in the concave portion 47b.
There is no need to align with the bottom of
The laser 13 may be applied to the entire bottom surface of b. This simplifies the process of forming the orifice 41,
The manufacturing cost of the liquid ejection head and the cost of the manufacturing apparatus are reduced.

Next, the film-shaped resin 3 formed with the orifice 41 and the convex portion 45 and wound in a roll shape is cut into a required 4-inch size for each liquid discharge head, and FIG. 1 and FIG. The orifice plate 40 shown in FIG.

Next, similarly to the method described in the first embodiment, the orifice plate 40 is epoxied so that the convex portion 45 of the orifice plate 40 enters and fits into the flow path 61 of the head body 46. The liquid ejection head described with reference to FIGS. 1 and 2 is manufactured by adhering to the head main body 46 with a system adhesive.

According to the manufacturing method of the liquid discharge head of the present embodiment, as in the first embodiment, one orifice plate 40 is manufactured as one unit without being divided and manufactured. When the orifice plate 40 having the discharge ports 41 of the
There is no seam of 0, and the dimensional accuracy of the discharge port 41, the convex portion 45, and the like is improved. Thereby, the orifice plate 4
The defect that the 0 convex portion 45 cannot be fitted into the flow path 61 of the head main body 46 is eliminated. In addition, in the evaluation when recording was performed using the manufactured liquid ejection head, in the case where the orifice plate was divided and manufactured, the deviation of the flying droplet caused by the failure of the joint portion of the orifice plate and the unevenness of the recorded image were observed. Good recording quality was obtained without such defects.

(Seventh Embodiment) FIG. 18 to FIG.
It is a figure for explaining the manufacturing method of the liquid discharge head of a 7th embodiment of the present invention. The method for manufacturing a liquid discharge head according to the present embodiment is a method for manufacturing a liquid discharge head having the same configuration and shape as the liquid discharge head manufactured by the manufacturing method according to the first embodiment.

Also in the method of manufacturing a liquid discharge head according to the present embodiment, a film-like resin for manufacturing an orifice plate is formed by the manufacturing line shown in FIG. 3 of the first embodiment. Here, instead of the relief mold 4 used in the first embodiment, a cooling roll 5 having a relief mold having another predetermined shape different from the relief mold 4 is used. FIG. 18A is a plan view of a film-shaped resin formed into a predetermined shape by pressing the polysulfone resin extruded from the die 2 of the extrusion molding machine 1 by the relief mold provided on the cooling roll 5. FIG.
FIG. 19B is a sectional view taken along line AA ′ of FIG. FIG. 19A is an enlarged plan view of a portion B of the film-shaped resin shown in FIG. 18A, and FIG.
FIG. 9 (a) is a sectional view taken along line CC ′.

First, the polysulfone resin was passed through the die 2 to a thickness of 5 mm under the same extrusion processing conditions (A) as in the first embodiment.
By extruding into a film so as to have a thickness of 0 μm, a film-like resin 3 is formed. The film-like resin 3 is
While being pressed by a cooling roll 5 at a temperature of 15 ° C. and a nip roll 6 provided with the above-mentioned relief mold on the surface, it is cooled at the same time. As a result, the relief type provided on the cooling roll 5 causes the film-shaped resin 3 as shown in FIG. 18 (a), FIG. 18 (b), FIG. 19 (a) and FIG. A projection 48c continuous in the extrusion direction of the film-like resin 3 for forming the plurality of projections 45 shown in FIG. 1 and FIG. 2 is formed. Each projection 48
c is for forming the convex part 45, and the protrusion 4
The external dimensions of 8c are 30 μm in width and 10 μm in height. Such a protrusion 48c is formed of the film-like resin 3
The relief die provided on the cooling roll 5 is manufactured so as to be formed as shown in FIG.

Next, the projecting portion 48c of the film-like resin 3 is formed.
A water-repellent layer is formed on the surface opposite to the side (face surface) by the same method as in the first embodiment. As a water repellent,
Asahi Glass Co., Ltd. CTX-CZ5A was used.

Next, a process of manufacturing an orifice plate after forming a water-repellent layer on the film-like resin 3 will be described with reference to FIGS. 19 and 20. FIG. 19 (b),
FIGS. 19 (c), 20 (a) and 20 (b) are enlarged plan views of portion B of the film-like resin shown in FIG. 18 (a). FIG. 19B ′ is CC ′ of FIG. 19B.
19 (c ') is a sectional view taken along line CC' of FIG. 19 (c), FIG. 20 (a ') is a sectional view taken along line CC' of FIG. 20 (a), and FIG. ') Is a sectional view taken along line CC' of FIG. 20 (b).

As shown in FIG. 19B ', the protrusion 48
orifice 41 shown in FIG. 1 and FIG.
And laser 13 on the part except the part corresponding to the convex part 45.
19 (c) and FIG.
As shown in (c ′), unnecessary portions of the protrusions 48c are removed to form a plurality of independent protrusions 48d. The external shape of each projection 48d is similar to that of the projection 45, and the external dimensions of each projection 48d are 30 μm in height, 30 μm in width, and 10 μm in height.

Next, as shown in FIG. 20 (a '), the center of the tip end surface of each projection 48d is irradiated with the laser 13, thereby obtaining the laser beam shown in FIGS. 20 (b) and 20 (b').
As shown in the figure, a through-hole penetrating through the film-shaped resin 3, that is, the orifice 4
Form one. As a result, the opening dimension on the convex portion 45 side becomes φ
25 μm, opening size on the side opposite to the convex 45 side is φ20 μm
Is formed in the resin film 3.

Also in the present embodiment, the protrusion 48d and the laser processing device shown in FIG. 8 of the second embodiment are used.
The projection 45 and the orifice 41 are formed. Projection 48
When forming d, the mask 1 used in the second embodiment is used.
Instead of 2, laser processing is performed using another mask having a predetermined pattern for forming the projection 45 as in the fourth embodiment. When forming the orifice 41, the same mask 12 as that of the second embodiment is used to open the center of the projection 48d.

Next, the film-shaped resin 3 formed with the orifice 41 and the convex portion 45 and wound in a roll shape is cut into a required 4-inch size for each liquid discharge head, and FIG. 1 and FIG. The orifice plate 40 shown in FIG.

Next, similarly to the method described in the first embodiment, the orifice plate 40 is epoxied so that the convex portion 45 of the orifice plate 40 enters and fits into the flow path 61 of the head body 46. The liquid ejection head described with reference to FIGS. 1 and 2 is manufactured by adhering to the head main body 46 with a system adhesive.

According to the manufacturing method of the liquid discharge head of the present embodiment, as in the first embodiment, one orifice plate 40 is manufactured as one unit without being divided and manufactured. When the orifice plate 40 having the discharge ports 41 of the
There is no seam of 0, and the dimensional accuracy of the discharge port 41, the convex portion 45, and the like is improved. Thereby, the orifice plate 4
The defect that the 0 convex portion 45 cannot be fitted into the flow path 61 of the head main body 46 is eliminated. In addition, in the evaluation when recording was performed using the manufactured liquid ejection head, in the case where the orifice plate was divided and manufactured, the deviation of the flying droplet caused by the failure of the joint portion of the orifice plate and the unevenness of the recorded image were observed. Good recording quality was obtained without such defects.

(Eighth Embodiment) FIGS. 21 and 22
FIG. 21 is a view for explaining the method for manufacturing the liquid ejection head according to the eighth embodiment of the present invention. The method for manufacturing a liquid discharge head according to the present embodiment is a method for manufacturing a liquid discharge head having the same configuration and shape as the liquid discharge head manufactured by the manufacturing method according to the first embodiment. The manufacturing method according to the present embodiment is different from the manufacturing method according to the seventh embodiment in that the discharge port is formed first before the outer shape of the convex portion to be fitted into the flow path is formed.

In the manufacturing method of the liquid discharge head according to the present embodiment, the projection 48c shown in FIG. 18 of the seventh embodiment is also operated by the manufacturing line shown in FIG. 3 of the first embodiment.
The film-shaped resin 3 on which is formed is produced.

Next, the projecting portion 48c of the film-like resin 3 is formed.
A water-repellent layer is formed on the surface opposite to the side (face surface) by the same method as in the first embodiment. As a water repellent,
Asahi Glass Co., Ltd. CTX-CZ5A was used.

Next, a process for manufacturing an orifice plate after forming a water-repellent layer on the film-like resin 3 will be described with reference to FIGS. 21 and 22. FIG. 21 (a),
21 (b), 21 (c), 22 (a) and 2
2 (b) is the film-like resin B shown in FIG.
It is the top view which expanded the part. FIG.
FIG. 21A is a cross-sectional view taken along the line CC ′, and FIG.
21B is a cross-sectional view taken along the line CC ′, and FIG.
FIG. 22C is a sectional view taken along line CC ′ of FIG.
FIG. 22A is a cross-sectional view taken along the line CC ′, and FIG.
It is a CC 'line sectional view of (b).

As shown in FIGS. 21 (a) and 21 (a '), the projection 48c explained in the seventh embodiment is applied to the film-shaped resin 3 by the relief-type pressing provided on the cooling roll 5. Are formed.

As shown in FIG. 21 (b '), the protrusion 48
orifice 41 shown in FIG. 1 and FIG.
By irradiating the laser 13 to the portion corresponding to the projections 4 as shown in FIGS. 21 (c) and 21 (c ').
8c, a through hole penetrating the film-shaped resin 3, that is, an orifice 41 is formed. As a result, the orifice 41 having an opening size of φ25 μm on the convex portion 45 side and φ20 μm on the opposite side to the convex portion 45 side is formed in the film-shaped resin 3.

Next, as shown in FIG. 22 (a '), the orifice 41 and the projection 4 on the distal end surface of the projection 48c.
By irradiating the laser 13 to portions other than the portion corresponding to 5, unnecessary portions of the protrusions 48 c are removed as shown in FIG. 22B and FIG. Form a plurality of independent convex portions 45. In the present embodiment, as in the seventh embodiment,
The orifice 41 and the projection 45 are formed by using the laser processing apparatus of the second embodiment shown in FIG.

Next, the film-shaped resin 3 formed with the orifice 41 and the convex portion 45 and wound in a roll shape is cut into a required 4-inch size for each liquid discharge head, and is cut as shown in FIGS. The orifice plate 40 shown in FIG.

Next, similarly to the method described in the first embodiment, the orifice plate 40 is epoxied so that the convex portion 45 of the orifice plate 40 enters and fits into the flow path 61 of the head body 46. The liquid ejection head described with reference to FIGS. 1 and 2 is manufactured by adhering to the head main body 46 with a system adhesive.

According to the method of manufacturing the liquid discharge head of the present embodiment, as in the first embodiment, one orifice plate 40 is manufactured as one unit without being divided and manufactured. When the orifice plate 40 having the discharge ports 41 of the
There is no seam of 0, and the dimensional accuracy of the discharge port 41, the convex portion 45, and the like is improved. Thereby, the orifice plate 4
The defect that the 0 convex portion 45 cannot be fitted into the flow path 61 of the head main body 46 is eliminated. In addition, in the evaluation when recording was performed using the manufactured liquid ejection head, in the case where the orifice plate was divided and manufactured, the deviation of the flying droplet caused by the failure of the joint portion of the orifice plate and the unevenness of the recorded image were observed. Good recording quality was obtained without such defects.

<Liquid Discharge Recording Apparatus> FIG. 23 is a perspective view showing an ink jet recording apparatus which is an example of a liquid discharge recording apparatus equipped with the liquid discharge head described with reference to FIGS. Head cartridge 601 mounted on inkjet recording apparatus 600 shown in FIG.
Has a liquid ejection head described with reference to FIGS. 1 and 2, and a liquid container for holding liquid supplied to the liquid ejection head. Head cartridge 60
As shown in FIG. 23, a carriage 607 is engaged with a spiral groove 606 of a lead screw 605 that rotates via driving force transmission gears 603 and 604 in conjunction with forward and reverse rotation of a driving motor 602. It is installed. The head cartridge 60 is driven by the power of the drive motor 602.
1 is reciprocated with the carriage 607 along the guide 608 in the directions of arrows a and b. The inkjet recording apparatus 600 includes a recording medium transport unit (not shown) that transports a printing paper P as a recording medium that receives a liquid such as ink discharged from the head cartridge 601. The paper pressing plate 610 of the print paper P conveyed on the platen 609 by the recording medium conveying means presses the print paper P against the platen 609 in the moving direction of the carriage 607.

In the vicinity of one end of the lead screw 605, photocouplers 611 and 612 are provided. The photocouplers 611 and 612 are
07, the photocouplers 611 and 6
This is a home position detecting means for confirming the presence in the area No. 12 and switching the rotation direction of the drive motor 602. In the vicinity of one end of the platen 609, a support member 613 that supports a cap member 614 that covers the front surface of the head cartridge 601 having the discharge port is provided. In addition, an ink suction unit 615 that sucks ink that has been idly discharged from the head cartridge 601 and accumulated inside the cap member 614 is provided. The ink suction unit 615 performs suction recovery of the head cartridge 601 through the opening of the cap member 614.

The ink jet recording apparatus 600 is provided with a main body support 619. The moving member 618 is attached to the main body support 619 in the front-rear direction, that is, the carriage 6.
It is supported so as to be movable in a direction perpendicular to the direction of movement 07. The cleaning blade 617 is attached to the moving member 618. Cleaning blade 6
Reference numeral 17 is not limited to this form, and may be another form of a known cleaning blade. Further, the ink suction means 6
15 is provided with a lever 620 for starting suction in the suction recovery operation by the lever 15. The lever 620 moves with the movement of the cam 621 engaging with the carriage 607, and the driving force from the driving motor 602 switches the clutch. The movement is controlled by a known transmission means such as the like. An ink jet recording control unit for giving a signal to the heating element provided in the head cartridge 601 and controlling the driving of each mechanism described above is provided in the main body of the ink jet recording apparatus, and is not shown in FIG. . The inkjet recording control unit includes a drive signal supply unit that supplies a drive signal for discharging liquid from the liquid discharge head.

In the ink jet recording apparatus 600 having the above-described configuration, the head cartridge 601 reciprocates over the entire width of the print paper P with respect to the print paper P conveyed on the platen 609 by the recording medium conveyance means. Make a record.

[0129]

As described above, the present invention has the following effects.

According to the first aspect of the present invention, when a liquid discharge head is manufactured, a film-shaped resin formed by extrusion molding is pressed against a roll provided with a relief mold having a predetermined shape. The orifice plate is manufactured by simultaneously and continuously forming the discharge ports and the convex portions that enter and fit into the flow path of the head body in the resin, so that a large number of discharge ports and convex portions are formed by laser as in the related art. All problems such as errors in the pitch of the discharge ports, defects in the shape of the discharge ports, and inadequate entry of the convex part into the flow path, which occurred when the orifice plate was divided and manufactured for processing, were all encountered. This has the effect of disappearing. In addition, when a joint is set between adjacent convex portions, a groove having a depth twice as large as the processing depth in the removal processing when forming the convex portion is formed, or a wall-shaped processing residue is formed at the joint. Or the problem of having to do so. Furthermore, since laser is not used when forming the discharge ports and projections, there is no generation of by-products such as carbon, so there is no need for post-processing, and there is no need for a large-scale laser processing machine. There is an effect that the cost of the apparatus can be kept low.

According to the second to eighth aspects of the present invention, when manufacturing an orifice plate, a convex portion having a concave portion and a convex portion are formed on a surface of a film-like resin by pressing a roll provided with a relief mold. The orifice plate can be divided and manufactured by combining the process of forming a plurality of independent projections, the continuous projections for forming the projections, or the discharge port, and the laser processing process. In addition, since the orifice plate is manufactured as a single unit, even when an orifice plate having a large number of discharge ports is manufactured, there is no seam between the orifice plates and the dimensional accuracy of the discharge ports and projections is improved. There is. In addition, in the evaluation when recording was performed by a liquid discharge head configured using the manufactured orifice plate, the flying droplet generated by the failure of the joint portion of the orifice plate when the orifice plate was manufactured by dividing the orifice plate was evaluated. There is an effect that good recording quality can be obtained without defects such as warping and unevenness of a recorded image.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining a liquid ejection head to which a method for manufacturing a liquid ejection head according to a first embodiment of the present invention is applied.

FIG. 2 is a cross-sectional view of the liquid ejection head shown in FIG. 1 along a flow channel direction.

FIG. 3 is a diagram schematically illustrating a part of a production line used in the method for producing a liquid ejection head according to the first embodiment of the present invention.

FIG. 4 is a plan view and a cross-sectional view of a film-like resin produced by the production line shown in FIG.

FIG. 5 is a plan view and a cross-sectional view of a film-like resin produced by the production line shown in FIG.

FIG. 6 is a diagram illustrating a method for manufacturing a liquid ejection head according to a second embodiment of the present invention.

FIG. 7 is a diagram illustrating a method for manufacturing a liquid discharge head according to a second embodiment of the present invention.

FIG. 8 is a diagram schematically showing a laser processing apparatus for forming an orifice in a film-like resin.

FIG. 9 is a view for explaining a method for manufacturing the liquid ejection head according to the third embodiment of the present invention.

FIG. 10 is a view for explaining a method for manufacturing the liquid ejection head according to the third embodiment of the present invention.

FIG. 11 is a diagram for explaining a method for manufacturing a liquid ejection head according to a fourth embodiment of the present invention.

FIG. 12 is a diagram illustrating a method for manufacturing a liquid ejection head according to a fourth embodiment of the present invention.

FIG. 13 is a view illustrating a method for manufacturing the liquid ejection head according to the fifth embodiment of the present invention.

FIG. 14 is a view illustrating a method for manufacturing the liquid ejection head according to the fifth embodiment of the present invention.

FIG. 15 is a view illustrating a method for manufacturing the liquid ejection head according to the fifth embodiment of the present invention.

FIG. 16 is a view for explaining a method for manufacturing the liquid ejection head according to the sixth embodiment of the present invention.

FIG. 17 is a view illustrating a method for manufacturing the liquid discharge head according to the sixth embodiment of the present invention.

FIG. 18 is a diagram illustrating a method for manufacturing the liquid discharge head according to the seventh embodiment of the present invention.

FIG. 19 is a view illustrating a method for manufacturing the liquid discharge head according to the seventh embodiment of the present invention.

FIG. 20 is a view illustrating a method for manufacturing the liquid discharge head according to the seventh embodiment of the present invention.

FIG. 21 is a view illustrating a method for manufacturing the liquid discharge head according to the eighth embodiment of the present invention.

FIG. 22 is a diagram illustrating a method for manufacturing the liquid discharge head according to the eighth embodiment of the present invention.

FIG. 23 is a perspective view showing an ink jet recording apparatus as an example of a liquid ejection recording apparatus equipped with the liquid ejection head described with reference to FIGS. 1 and 2.

FIG. 24 is a perspective view illustrating a liquid ejection head provided in a conventional inkjet recording apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 extruder 2 die 3 film-like resin 4 relief type 5 cooling roll 6 nip roll 7 take-up roll 8 take-up roll 9 excimer laser oscillator 11 condenser lens 12 mask 13 laser 40 orifice plate 41 discharge port (orifice) 42 adhesive resin 44a , 44b Joint surface 45 Convex part 46 Head body 47a, 47b Concave part 48a, 48b, 48c, 48d Projection part 50 Substrate (heater board) 51 Energy generating element (heater) 60 Top plate 61 Flow path 62 Liquid chamber 64 Supply port 600 Ink jet Recording device 601 Head cartridge 602 Drive motor 603, 604 Driving force transmission gear 605 Lead screw 606 Spiral groove 607 Carriage 607a Lever 608 Guide 609 Platen 610 Paper press plate 611, 6 2 photocoupler 613 supporting member 614 cap member 615 ink suction means 617 cleaning blade 618 moves member 619 main support 620 lever 621 cams P print paper

Claims (16)

[Claims] 1. A head body including a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, a plurality of flow paths in which the energy generating elements are respectively arranged, The head comprising: a plurality of discharge ports each communicating with each other; and a plurality of protrusions formed around each of the discharge ports independently of each other so as to enter and fit into the flow path around the discharge ports. A method for manufacturing a liquid ejection head having an orifice plate joined to a main body, the method comprising: extruding a molten resin into a film by extrusion to form the orifice plate, thereby forming a film-like resin; By pressing a roll provided with a relief mold of a predetermined shape on the surface of the resin film, the discharge port and the convex portion are formed on the film resin. Simultaneously and continuously forming the orifice plate in which the plurality of discharge ports and the plurality of convex portions are formed in the film-like resin; and a joining surface of the orifice plate with the head main body. Alternatively, a method for manufacturing a liquid ejection head, comprising: applying an adhesive to a bonding surface of the main body head with the orifice plate; and bonding the orifice plate to the main body head with the adhesive. 2. A head body having a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, a plurality of flow paths in which the energy generating elements are respectively arranged, The head comprising: a plurality of discharge ports each communicating with each other; and a plurality of protrusions formed around each of the discharge ports independently of each other so as to enter and fit into the flow path around the discharge ports. A method for manufacturing a liquid ejection head having an orifice plate joined to a main body, the method comprising: extruding a molten resin into a film by extrusion to form the orifice plate, thereby forming a film-like resin; The discharge port is formed in the film-like resin by pressing a roll provided with a relief mold of a predetermined shape on the surface of the resin-like shape. Forming the plurality of protrusions, each of which has a concave portion formed in the center thereof, and forming a plurality of the discharge ports in the film-like resin by irradiating a laser to each bottom surface of the plurality of concave portions, A step of producing the orifice plate in which the plurality of discharge ports and the plurality of convex portions are formed in the film-like resin; and a joining surface of the orifice plate with the head main body, or the main body head, A method for manufacturing a liquid discharge head, comprising: a step of applying an adhesive to a joint surface with an orifice plate; and a step of bonding the orifice plate to the main body head with the adhesive. 3. A head body including a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, a plurality of flow paths in which the energy generating elements are respectively arranged, The head comprising: a plurality of discharge ports each communicating with each other; and a plurality of protrusions formed around each of the discharge ports independently of each other so as to enter and fit into the flow path around the discharge ports. A method for manufacturing a liquid ejection head having an orifice plate joined to a main body, the method comprising: extruding a molten resin into a film by extrusion to form the orifice plate, thereby forming a film-like resin; By pressing a roll provided with a relief mold of a predetermined shape on the surface of the resin-like resin, to form the protrusions on the film-like resin. The step of forming a plurality of independent protrusions, and forming a plurality of the discharge ports and the protrusions in the film-like resin by irradiating a laser to the center of the tip end surface of each of the protrusions, A step of producing the orifice plate in which the plurality of discharge ports and the plurality of convex portions are formed in the film-like resin; and a joining surface of the orifice plate with the head main body, or the main body head, A method for manufacturing a liquid discharge head, comprising: a step of applying an adhesive to a joint surface with an orifice plate; and a step of bonding the orifice plate to the main body head with the adhesive. 4. A head body including a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, a plurality of flow paths in which the energy generating elements are respectively arranged, The head comprising: a plurality of discharge ports each communicating with each other; and a plurality of protrusions formed around each of the discharge ports independently of each other so as to enter and fit into the flow path around the discharge ports. A method for manufacturing a liquid ejection head having an orifice plate joined to a main body, the method comprising: extruding a molten resin into a film by extrusion to form the orifice plate, thereby forming a film-like resin; The plurality of projections are formed on the film-like resin by pressing a roll having a relief mold of a predetermined shape on the surface of the resin-like shape. Forming a continuous projection for forming the discharge port disposed on the projection, and irradiating a laser to a portion of the continuous projection except for a portion corresponding to the discharge port and the projection. Forming a plurality of the convex portions by performing the orifice plate in which the plurality of discharge ports and the plurality of convex portions are formed in the film-like resin; and the head body of the orifice plate, A method of manufacturing a liquid ejection head, comprising: applying an adhesive to a bonding surface of the main body head or a bonding surface of the main body head to the orifice plate; and bonding the orifice plate to the main body head with the adhesive. . 5. A head body having a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, a plurality of flow paths in which the energy generating elements are respectively arranged, The head comprising: a plurality of discharge ports each communicating with each other; and a plurality of protrusions formed around each of the discharge ports independently of each other so as to enter and fit into the flow path around the discharge ports. A method for manufacturing a liquid ejection head having an orifice plate joined to a main body, the method comprising: extruding a molten resin into a film by extrusion to form the orifice plate, thereby forming a film-like resin; The discharge port is formed in the film-like resin by pressing a roll provided with a relief mold of a predetermined shape on the surface of the resin-like shape. Forming a continuous protrusion for forming the plurality of protrusions, each having a plurality of independent recesses, and a portion corresponding to the recess and the protrusion of the continuous protrusion. Irradiating a laser to a part to be removed to form a plurality of the convex portions, and irradiating a laser to a bottom surface of each of the plurality of concave portions to form a plurality of the discharge ports in the film-shaped resin, A step of manufacturing the orifice plate in which the plurality of discharge ports and the plurality of convex portions are formed in a resin; and a bonding surface of the orifice plate with the head main body, or the orifice plate of the main body head. A step of applying an adhesive to the bonding surface of the liquid ejecting head, and a step of bonding the orifice plate to the main body head with the adhesive. Production method. 6. A head body including a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, a plurality of flow paths in which the energy generating elements are respectively arranged, The head comprising: a plurality of discharge ports each communicating with each other; and a plurality of protrusions formed around each of the discharge ports independently of each other so as to enter and fit into the flow path around the discharge ports. A method for manufacturing a liquid ejection head having an orifice plate joined to a main body, the method comprising: extruding a molten resin into a film by extrusion to form the orifice plate, thereby forming a film-like resin; The discharge port is formed in the film-like resin by pressing a roll provided with a relief mold of a predetermined shape on the surface of the resin-like shape. Forming a continuous protrusion for forming the plurality of protrusions, each having a plurality of independent recesses, and irradiating a laser to each bottom surface of the plurality of recesses to form the film. Forming a plurality of the discharge ports on the resin; and irradiating a laser to a portion of the continuous protrusions other than a portion corresponding to the discharge ports and the protrusions, thereby forming the plurality of the protrusions on the film-shaped resin. Forming the orifice plate in which the plurality of discharge ports and the plurality of protrusions are formed in the film-like resin; and a bonding surface of the orifice plate with the head main body, or the main body head. Applying an adhesive to a joint surface with the orifice plate; and adhering the orifice plate to the main body head with the adhesive. Of manufacturing a liquid discharge head having the same. 7. A head body including a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, a plurality of flow paths in which the energy generating elements are respectively arranged, The head comprising: a plurality of discharge ports each communicating with each other; and a plurality of protrusions formed around each of the discharge ports independently of each other so as to enter and fit into the flow path around the discharge ports. A method for manufacturing a liquid ejection head having an orifice plate joined to a main body, the method comprising: extruding a molten resin into a film by extrusion to form the orifice plate, thereby forming a film-like resin; The plurality of projections are formed on the film-like resin by pressing a roll having a relief mold of a predetermined shape on the surface of the resin-like shape. Forming a continuous projection for forming the projection, by irradiating a laser to a portion of the continuous projection except a portion corresponding to the discharge port and the projection. Forming a plurality of independent protrusions, and forming a plurality of the discharge ports and the protrusions on the film-like resin by irradiating a laser to a center portion of a tip end surface of each of the independent protrusions. A step of producing the orifice plate in which the plurality of discharge ports and the plurality of projections are formed in the film-like resin; and a bonding surface of the orifice plate with the head main body, or of the main body head, A step of applying an adhesive to a bonding surface with the orifice plate; and a step of bonding the orifice plate to the main body head with the adhesive. Production method of the delivery head. 8. A head body including a plurality of energy generating elements for generating energy for discharging a liquid as flying droplets, a plurality of flow paths in which the energy generating elements are respectively arranged, A plurality of discharge ports each communicating with each other, and a plurality of projections formed around each of the discharge ports independently around the discharge ports so as to enter and fit into the flow path; A method for manufacturing a liquid ejection head having an orifice plate joined to a main body, the method comprising: extruding a molten resin into a film by extrusion to form the orifice plate, thereby forming a film-like resin; The plurality of projections are formed on the film-like resin by pressing a roll having a relief mold of a predetermined shape on the surface of the resin-like shape. Forming a continuous protrusion for forming, a step of forming a plurality of discharge openings in the film-like resin by irradiating a laser to a portion corresponding to the discharge opening of the continuous protrusion, By irradiating a laser to a portion of the continuous protrusion except a portion corresponding to the ejection port and the projection, the plurality of projections are formed in the film-like resin, and the plurality of ejection ports are formed in the film-like resin. And forming the orifice plate on which the plurality of protrusions are formed; and bonding an adhesive to the bonding surface of the orifice plate with the head body or the bonding surface of the body head with the orifice plate. A method for manufacturing a liquid ejection head, comprising: a step of applying; and a step of bonding the orifice plate to the main body head with the adhesive. 9. In the step of pressing a roll provided with a relief mold of the predetermined shape on the surface of the film-like resin, the molten resin extruded into a film in the extrusion molding step is cooled by the roll. 9. The method according to claim 1, wherein the roll is pressed against the molten resin. 8. 10. The method for manufacturing a liquid ejection head according to claim 1, wherein a thermoplastic polymer is used as a material of the film-shaped resin. 11. The liquid ejection head according to claim 1, wherein one of polysulfone, polyethersulfone, polyphenylene sulfide, and polyetheretherketone is used as a material of the film-shaped resin. Manufacturing method. 12. A liquid ejection head for ejecting a liquid by utilizing the generation of air bubbles caused by applying thermal energy to the liquid, wherein the liquid ejection head according to claim 1 is a liquid ejection head. A liquid ejection head manufactured by a manufacturing method. 13. A head cartridge comprising: the liquid ejection head according to claim 12; and a liquid container for holding a liquid supplied to the liquid ejection head. 14. A liquid ejection recording apparatus comprising: the liquid ejection head according to claim 12; and a drive signal supply unit that supplies a drive signal for ejecting liquid from the liquid ejection head. 15. A liquid discharge recording apparatus comprising: the liquid discharge head according to claim 12; and a recording medium transport unit that transports a recording medium that receives liquid discharged from the liquid discharge head. 16. The liquid discharge recording apparatus according to claim 14, wherein recording is performed by discharging liquid from the liquid discharge head and attaching the liquid to a recording medium.