WO2001078987A1 - Ink cartridge mechanism and the check valve thereof - Google Patents

Abstract

The present invention relates to an ink cartridge mechanism and its check valve. The check valve is positioned in the cavity of the ink cartridge mechanism and comprises a supporting base, a supporting wall inclined projecting from the inner side of the supporting base, a supporting shoulder inwardly flexed from the supporting wall, and a supporting head projecting from the supporting shoulder and provided with a central through-hole sealed by a valve sealing unit for keeping the ink in the valve. A packing element provided at the ink outlet comprises: an integrally-formed supporting-portion closely engaged with the ink outlet, a sealing ring projecting out of the supporting-portion and having a block engaged therewith, and a connecting portion between the block and the ring. With the annular-step shaped structure of the valve of the ink cartridge mechanism, the present invention can be extremely sensitive to pressure, thereby the printing quality can be effectively improved. When the print needle inserts through, the connect portion is broken down making the block separated from the sealing ring. Because of the firm engagement between the packing element and the printing needle, the packing element of this invention functions good when in use. Even when it is not in use, it still has excellent sealing performance.

Description

 Ink cartridge device and one-way wide body equipped with the same

 The present invention relates to an ink cartridge device of an inkjet printer device, and in particular relates to an ink cartridge which uses a one-way valve body to control the ink ejection of the ink cartridge and seals the ink ejection port through a seal integrally formed by a sealing ring portion and a stopper. Device. Background technique

 An ink-jet printer apparatus usually has an ink cartridge unit connected to a print head. One of the most basic requirements for a printer to perform a print job is that its ink cartridge unit can discharge ink continuously and evenly. At present, in the ink cartridge device of the prior art, a method for controlling ink discharge generally adopted is to use a capillary suction force of a porous body to store ink, such as sponge. Such an ink cartridge device is disclosed in Chinese patent CN1 185379A (application number: 97121762.9), as shown in FIG. In the ink cartridge device 10 disclosed in this document, the cartridge body is divided into two interconnected chambers 12 and 15 for storing ink and placing the porous body 14 respectively. Placing the porous body 14 in the cartridge body 10 is easy to realize in structure, but the disadvantage is that the existence of the porous body 14 occupies the effective space of the ink cartridge. In fact, the total amount of ink stored in such prior art ink cartridge devices generally does not exceed 60% to 65% of the total volume of the ink cartridge. In addition, using the porous body 14 to control the ink discharge structure, a certain amount of ink remains at the end and cannot be used well; at the same time, the cost of the porous body 14 is high.

US patent document US4677447 discloses an ink cartridge device 20 using a structure of a check valve 22 to control ink discharge, as shown in FIG. 2. Since the one-way control frame 22 is disposed in the ink storage chamber 24, the ink can be basically filled in all the chambers, which effectively increases the total amount of ink. Referring to FIG. 2, an umbrella-shaped valve body 22 is used to buckle the through hole 25 communicating with the ink storage chamber 24 from the ink introduction chamber 26. Therefore, during assembly and use, First, ink is held by the wide body 22. When the print head is ejected, a negative pressure is generated in the ink introduction chamber 26. At this time, the valve body is shifted downward due to the pressure difference between the two ends, thereby allowing ink to flow from the through hole 25 into the ink introduction chamber 26; thus, the valve body 22 is continuously provided with ink to the print head. However, this one-way wide 22 structure technically brings new problems. In the initial stage of printing, since the ink needs to pass through the ink introduction chamber 26 to the print head (not shown), the ink in the ink Doped with a small amount of air, and this small amount of air will change due to environmental factors such as temperature, which will affect the print quality.

 In addition, the ink cartridge device provided for the inkjet printer usually needs to be provided with a seal ring at the ink outlet of the cartridge body. This prior art sealing ring only guarantees a good sealing effect when the ink supply needle is inserted, and a sealing film must be provided at the ink outlet when the ink supply needle is inserted or not in use.

 For example, Chinese patent application CN1133784A discloses a funnel-shaped seal ring 100. As shown in FIG. 3, the seal ring 10 has a through hole 102, the bottom hole of the through hole 102 is small and the top hole is large. The through hole 102 The size is such that the ink supply needle-like body 104 of the inkjet recording apparatus can be inserted and pressed elastically against the outer circumferential surface of the ink supply needle-like body 104. When the ink supply needle-like body 104 is inserted into the ink supply port, the seal ring 100 prevents ink from overflowing the cartridge body, rather than preventing ink from flowing through the ink supply needle-like body 104. The small end of the through hole 102 is close to the ink outlet. Obviously, this kind of sealing ring 10 can play a good sealing role, but this kind of sealing ring 100 can only ensure that the ink supply needle-shaped body can play a good role. Sealing effect. Therefore, the prior art sealing ring 100 must also be provided with a sealing film 106 to prevent ink from overflowing the cartridge during transportation, which undoubtedly increases the manufacturing cost.

 In the ink cartridge device disclosed in U.S. Patent No. 5,790,158, a sealing ring with a through hole in the center is also applied, as shown in the "0" -shaped sealing ring 120 shown in FIG. These sealing rings 120 can play a better sealing role, but in the transport and non-use state, it also needs to be provided with a sealing film 124 on the outside of the chamber 122.

US Patent No. 5,949,458 also discloses a seal 130, as shown in FIG. 5, the The seal 130 is provided with a pierceable film 132. However, in this solution, the sealing member 130 and the thin film body 132 are both elastic members. Because the thin film 132 has strong toughness, when the thin film 132 is punctured during application, it is relatively labor-intensive, and even the phenomenon of being unable to be punctured appears. Brief description of the invention

 An object of the present invention is to provide an ink cartridge device, which can conveniently control the ink flow rate through a one-way valve body, and can reserve ink in the ink introduction chamber or design the ink introduction chamber sufficiently small. To effectively prevent the occurrence of air bubbles, to ensure continuous and even printing.

 Another object of the present invention is to provide a one-way valve. By designing the valve body into a stepped shape, the valve body made of an elastic material can easily deform from the shoulder.

 Another object of the present invention is to provide an ink cartridge device for sealing an ink outlet through a matching sealing ring portion and a stopper. The ink cartridge device can directly perform a good sealing function during transportation, and can also be used when a printing needle is provided. The printed object has a good sealing effect in the printed state, thereby facilitating the assembly process and reducing costs more effectively.

 The present invention is achieved through the following technical solutions.

 An ink cartridge device provided in a printer device includes

 A box body provided with at least one cavity therein for storing ink, wherein the box body contains

 At least one vent hole for communicating the cavity with the atmosphere;

 At least one ink outlet is provided on a wall portion for communicating with a printing needle of a printer device; and

At least one seal member for blocking the ink outlet for retaining ink; and at least one one-way valve body for closing the ink outlet for controlling ink flow, wherein the at least one one-way valve body is provided And is integrally provided inside the at least one cavity A supporting foot is in sealing contact with the cavity wall of the at least one ink outlet;

 A support wall portion bulging from the inside of the support leg portion;

 A support shoulder portion formed by bending inward from the support wall portion;

 A supporting head is raised from the supporting shoulder and penetrates a central through hole; and the ink cartridge device further includes a wide body sealing device for closing the central through hole of the supporting head.

 In the ink cartridge device, the support wall portion is inclined and bulged upward from the support leg portion.

 In the ink cartridge device, the support shoulder portion bent inward from the inclined wall portion is recessed downward to form a concave portion.

 In the ink cartridge device, the support head portion is inclined and protruded from the support shoulder portion.

 In the ink cartridge device, the central through hole of the supporting head is a tapered through hole having a lower diameter slightly larger than an upper diameter.

 In the ink cartridge device, an inclination angle of the support head is greater than an inclination angle of the support wall portion.

 In the ink cartridge device, a thickness of the support leg portion is greater than a wall thickness of the support shoulder portion.

 In the ink cartridge device, a wall thickness of the support head is larger than a wall thickness of the support shoulder.

 In the ink cartridge device, a thickness of the supporting leg portion is greater than a wall thickness of the supporting head portion.

 In the ink cartridge device, at least one recessed portion is provided on a wall portion communicating with the at least one ink outlet for placing the valve body.

In the ink cartridge device, a filter device is disposed on a bottom wall of the recessed wall portion to filter impurities in the ink. In the ink cartridge device, the wide body sealing device presses the support head of the unidirectional wide body downwards, so that the valve body is in a compressed state.

 In the ink cartridge device, a spring is preset in the valve body, and abuts against the supporting shoulder of the valve body.

 In the ink cartridge device, the valve body sealing device is a protrusion provided integrally with a wall portion of the cartridge body.

 In the ink cartridge device, the protrusion blocks a central through hole of the support head with a sheath sleeved on an outer side thereof.

 In the ink cartridge device, a device for preventing ink leakage is provided at the vent hole.

 In the ink cartridge device, the ink leakage prevention device is provided by the vent hole wall protruding toward the ink storage cavity.

 In the ink cartridge device, the protrusion extends to 1/3 ~ 1/2 of the ink storage cavity. In the ink cartridge device, the ink leakage prevention device is a curved pipe, one end of which is connected to the vent hole, and the other end is exposed to the liquid surface.

 The ink cartridge device, wherein the ink leakage prevention device includes

 A body cavity with an opening; and

 A valve body is disposed in the valve body cavity, and is used to block the vent hole when the box body is inverted to prevent ink from leaking from the vent hole.

 In the ink cartridge device, the valve body is a cylinder with an inclined groove, and the inclined groove is matched with the valve body cavity and the vent hole, and is used to keep the ink storage cavity and the outside air open. .

 In the ink cartridge device, the valve body is a ball valve supported by an elastic sheet with a through hole, which is placed on the opening of the valve body cavity to maintain the ink storage cavity and outside air. Unblocked.

In the ink cartridge device, a top wall of the cartridge body is further provided with ink for injecting ink. The through hole is covered with a plug cover.

 In the ink cartridge device, the ink leakage preventing device is a porous body placed at the vent hole.

 In the ink cartridge device, the ink outlet is provided on a bottom wall of the box body, and the bottom wall is inclined to the ink outlet.

 In the ink cartridge device, the opening pressure of the valve body is 200 mm to 0 mm water column.

 In the ink cartridge device, the opening pressure of the valve body is a 150 mm to 30 mm water column.

 In the ink cartridge device, at least one sealing ring member is provided at the ink outlet, and at least one sealing film is covered thereon.

 In the ink cartridge device, there are two sealing ring members, and a sealing film is provided between the two sealing ring members.

 In the ink cartridge device, a ring member for enhancing rigidity is provided on the sealing film. '

 In the ink cartridge device, an elastic seal with a separable membrane is provided at the ink outlet.

 In the ink cartridge device, a ring member for enhancing rigidity is provided in the elastic sealing member.

 The ink cartridge device, wherein the seal is provided inside the ink outlet, and is integrally provided with

 A support portion with a cavity inside, which closely cooperates with a wall portion of the ink outlet; a sealing ring portion, which bulges inward from the support portion;

 A stopper that cooperates with the seal ring portion formed by the bulge; and

A connecting portion surrounds the seal ring portion and the stopper, and is used to ensure that the stopper is broken when the stopper is subjected to a predetermined pressure. In the ink cartridge device, the support portion is ring-shaped.

 In the ink cartridge device, the stopper that cooperates with the raised seal ring portion is provided at a center portion of the seal.

 In the ink cartridge device, the seal ring portion is vertically raised from the support portion.

 In the ink cartridge device, a top surface and a bottom surface of the seal ring portion are provided parallel to the ink cartridge device, and a top surface of the seal ring portion is disposed obliquely from the support portion toward a center.

 In the ink cartridge device, an included angle between the inclined top surface of the seal ring portion and a horizontal plane is 30 to 45 °.

 In the ink cartridge device, the connection portion is connected to a top end of the seal ring portion.

 In the ink cartridge device, the stopper has a spherical crown shape.

 In the ink cartridge device, the stopper is cylindrical.

 In the ink cartridge device, the stopper is a round sheet.

 In the ink cartridge device, a wall portion is integrally provided at an end of the seal ring portion upward.

 In the ink cartridge device, a width of the connecting portion is 0 to 0.3 mm. In the ink cartridge device, a thickness of the connecting portion is much smaller than a thickness of the stopper, and is used for easily passing a printing needle after being broken by force.

 In the ink cartridge device, the connection portion has a uniform thickness.

 In the ink cartridge device, a thickness of the connecting portion is between 0.15 and 0.4 mm.

 In the ink cartridge device, the connecting portions have different thicknesses.

The ink cartridge device, wherein a thickness of the connecting portion is a portion of the ring portion Increment to the opposite side.

 The ink cartridge device, wherein the thickness of the thinnest part of the connecting portion is between

Between 0.15 ~ 0.25mm.

 In the ink cartridge device, a thickness of a thickest part of the connecting portion is between 0.3 and 0.4 mm.

 In the ink cartridge device, a packing seal for covering the vent hole on the outer side of the box body and simultaneously covering the ink outlet along the box body.

 A one-way valve body for controlling the flow of ink, wherein the valve body includes a supporting leg portion;

 A support wall portion bulging from the inside of the support leg portion;

 A support shoulder portion formed by being bent inward from the support wall portion; and

 A support head protrudes from the support shoulder and passes through a central through hole.

 In the wide body, the support shoulder portion bent inward from the support wall portion is recessed downward to form a concave surface portion.

 In the valve body, wherein the support head is bulged obliquely from the support shoulder. In the valve body, the central through hole of the support head is a tapered through hole having a diameter at the lower portion which is slightly larger than the diameter at the upper portion.

 In the valve body, an inclination angle of the support head is greater than an inclination angle of the support wall portion.

 In the valve body, a thickness of the support leg portion is greater than a wall thickness of the support shoulder portion.

 In the valve body, a wall thickness of the support head is greater than a wall thickness of the support shoulder.

 In the valve body, a thickness of the support leg portion is greater than a wall thickness of the seal ring portion.

According to an aspect of the present invention, since the present invention is shaped in the recess of the valve body and the bottom wall, An ink introduction cavity is formed, and ink is reserved in the ink introduction cavity, thereby avoiding the generation of air bubbles. According to another aspect of the present invention, since the present invention can also design the valve body and the ink introduction chamber to be sufficiently small, the cleaning action during the printer operation can also avoid the generation of air bubbles, which can be more widely applied to different The needs of the occasion.

 According to another aspect of the present invention, the one-way valve body of the present invention is deformed due to a small pressure, so that the ink in the ink storage chamber immediately fills the ink introduction chamber, and continuously supplies ink to the print head. Therefore, the Fujian body of the present invention can be applied in a wide pressure range, so the adaptability to the environment is strong.

 According to still another aspect of the present invention, since the present invention further provides a leakage preventing device in the vent hole, effectively preventing ink leakage, facilitating the filling operation of the ink cartridge, and facilitating the reuse of the ink cartridge device of the present invention.

 According to still another aspect of the present invention, since the present invention is adapted to the seal ring portion by a stopper having a sufficient thickness, the seal may be effectively prevented from being broken during transportation or assembly.

 According to yet another aspect of the present invention, since the present invention provides a connecting portion that is much smaller in thickness and width than the stopper, it not only ensures that the seal of the present invention can withstand a certain pressure, but also ensures that it can It breaks effectively, allowing the ink supply needles to pass smoothly.

 According to still another aspect of the present invention, since each part of the seal of the present invention, such as a support portion, a seal ring portion, a stopper, and a connecting portion, is all designed in one piece, greatly facilitating assembly work, and effectively reducing costs. . Brief description of the drawings

 The following describes the preferred embodiments of the present invention with reference to the accompanying drawings to make the foregoing technical solutions and features of the present invention and other advantages obvious. among them:

FIG. 1 is a cross-sectional view of a prior art ink cartridge device, shown in an ink storage chamber The structure of the porous body provided for controlling the ink discharge;

 2 is a cross-sectional view of another conventional ink cartridge device, showing a structure for holding ink by using a one-way valve body;

 Figure 3 shows a prior art ink cartridge device, showing a sealing ring with a funnel-shaped through hole, and a sealing film covering the ink outlet;

 Figure 4 shows another prior art ink cartridge device, in which the sealing member is a "0" ring, and the ink outlet is covered with a sealing film;

 FIG. 5 shows still another ink cartridge device of the prior art, in which a sealing member seals ink through a diaphragm formed in the middle;

 6 is a longitudinal sectional view of a one-way valve body according to the present invention, showing a stepped valve body that can be compressed from a shoulder;

 FIG. 7A is a cross-sectional view of an ink cartridge device according to a preferred embodiment of the present invention, in which a one-way valve body provided in an ink storage chamber is blocked by a valve body sealing device fixed on a cavity wall; FIG. 7B is shown in FIG. 7A Schematic diagram of the working state of the ink cartridge device, in which the central through hole is separated from the sealing device after the one-way valve body is pressurized;

 8 is a cross-sectional view of an ink cartridge device according to another preferred embodiment of the present invention, in which a spring abuts against a one-way valve body for accelerating the valve body reset;

 9 is a sectional view of an ink cartridge device according to still another preferred embodiment of the present invention, showing a cylinder and a valve body sealing device with a through hole to fix the valve body;

 10 is a cross-sectional view of an ink cartridge device according to another preferred embodiment of the present invention, showing that a cylindrical protrusion is integrally formed on the top wall of the ink storage cavity to fix the valve body sealing device and the valve body, and a sponge body is provided at the vent hole to prevent ink Fluid leakage

 11 is a cross-sectional view of an ink cartridge device according to another preferred embodiment of the present invention, showing that a cylindrical valve body device is provided at the vent hole to prevent ink leakage;

12A is an enlarged sectional view of the cylindrical valve body device shown in FIG. 11; FIG. 12B is a sectional view of the cylindrical valve body in the cylindrical wide body device shown in FIG. 11; 13 is a cross-sectional view of an ink cartridge device according to another preferred embodiment of the present invention, showing that a spherical valve body device is provided at the vent hole to prevent ink leakage;

 14 is an enlarged sectional view of the spherical valve body device shown in FIG. 13;

 15 is a cross-sectional view of an ink cartridge device according to another preferred embodiment of the present invention, showing that the bottom wall of the ink cartridge is inclined toward the ink outlet to ensure sufficient ink supply;

 16A-E are other preferred embodiments of the structure of the ink outlet seal of FIG. 15; FIG. 17A shows a first embodiment of the seal applied to the ink cartridge device according to the present invention, Until the raised sealing ring part is matched with a ball crown stopper;

 FIG. 17B is a schematic view showing a state of the seal shown in FIG. 17A when it is passed by the ink supply needle;

 FIG. 18A shows still another embodiment of the stopper of the present invention, showing that the seal ring portion from the support portion to the bulge is adapted to a cylindrical stopper;

 FIG. 18B is a schematic diagram showing a state of the seal shown in FIG. 18A when it is passed by the ink supply needle;

 FIG. 19 shows another preferred embodiment of the seal ring portion of the present invention, wherein the top surface of the seal ring portion is inclined from the support portion to the center for facilitating the stopper to disengage from the connection portion; FIG. 20A shows In a preferred embodiment of the present invention, the connecting portion is integrally provided on the seal, wherein the connecting portion has a uniform thickness;

 FIG. 20B shows still another preferred embodiment of the connecting portion of the present invention. The connecting portion is gradually thickened from the thinnest part, and is used to ensure that when the ink supply needle-like body passes through, the stopper of the present invention passes. Part of the connecting part is connected with the sealing ring part;

 FIG. 21 shows still another preferred embodiment of the seal of the present invention, wherein a vertical wall adapted to the ink supply needle is provided on the seal ring portion;

22A to 22B are perspective views of an ink cartridge device according to the present invention, and show a packaging film that simultaneously seals a vent hole and an ink outlet. Detailed description of the invention

 Please refer to the longitudinal sectional view shown in FIG. 7A, which is a preferred embodiment of the ink cartridge device 40 of the present invention, and shows the one-way valve body 30 provided in the ink storage cavity 402 of the present invention, for 404 is isolated from the ink storage cavity 402.

 In order to better explain the preferred embodiment of the ink cartridge device of the present invention, first, referring to a longitudinal sectional view of a one-way valve body 30 of the present invention shown in FIG. 6. The one-way valve body 30 of the present invention is made of a rubber material, and has a hardness of 30 to 40 degrees Shore, and its outer contour is substantially a ring-shaped step. The valve body 30 includes a ring-shaped support foot portion 310 that is in sealing contact with the bottom wall of the cavity; a raised ring-shaped support wall portion 322 inclinedly bulged from the inside of the support foot portion 310; a support shoulder 324 The portion 322 is further bent inward; and a support head 330 is raised from the support shoulder 324 and has a through hole 332 in the center.

 The valve body 30 of the present invention is affected by the suction force of the print head, which causes a pressure difference between the upper and lower sides of the valve body. The direction is shown by the arrow in FIG. 6, and the valve body is deformed. Therefore, it is best that the present invention further recesses the support shoulder portion 324 bent inward from the support wall portion 322 to form a concave portion. This ensures that when the pressure on both sides of the valve body 30 of the present invention changes, the support head 330 can generate a moderate offset. In fact, since the pressure difference generated by the print head device is often changed, it can be imagined that the offset generated by the support head 330 should also be different, and the sunken shoulder 324 of the present invention can ensure the valve body 30 of the present invention. The support head 330 responds to less negative pressure. It can be seen that the support shoulder 324 is a pressure buffering and pressure sensitive part of the wide body 30.

At the same time, it should also be considered that the deformation of the support head 330 is reduced as much as possible even when the valve body 30 is subject to a large negative pressure. This is on the one hand due to the consideration of ink flow control, and on the other hand it is considered By this time, the support head 330 should be quickly reset. Therefore, more specifically, in the valve body 30 of the present invention, the thickness of the supporting leg portion 310 is greater than the wall thickness of the supporting shoulder portion 324 and the thickness of the supporting head portion 330 is greater. It is easy to understand that for the support The head 330 can respond to a small negative pressure. The thickness of the support shoulder 324 should be set smaller than the wall thickness of the support head 330, especially the thickness of the curved portion 325 should be set to a minimum, usually between 0.15 to 0.5 mm. More suitable. In order to gradually disperse changes in the pressure difference to which the valve body 30 according to the present invention is subjected, the present invention further provides a support head 330 at an oblique angle, and the inclination angle thereof is greater than the inclination angle θ _{2 of the} support wall portion 322. In addition, the through hole 332 is preferably designed It is a tapered through hole with a slightly larger diameter at the bottom end, as shown in FIG. 6.

 The valve body 30 of the present invention achieves the purposes of maintaining ink and controlling ink flow in the ink cartridge device 40 by a built-in design. Returning to FIG. 7A, the valve body 30 of the present invention is disposed above the ink outlet 404 in the ink storage chamber 402, and its support foot 310 is in contact with the bottom wall 406. In order to maintain the stability of the valve body 30, the bottom wall 406 around the ink outlet 404 is preferably recessed to form a recessed portion 408. The valve body sealing device 340 directly protrudes from the top wall 410 of the ink cartridge, plugs the valve body support head 330, and gently presses the head 330. In this way, the valve body 30 of the present invention can hold the ink in the ink storage cavity 402 and isolate it from the ink outlet 404. Preferably, an elastic sheath 342 is used to cover the outside of the sealing device 340 to elastically block the support head 330 of the valve body 30.

 Of course, the valve body sealing device 340 of the present invention can have various deformations. For example, it can be designed as a wall-shaped protrusion 410 as shown in FIG. 7A, or it can be fixed on the wall 410 alone. According to various needs, if higher requirements can be placed on the stability of the valve body 30, a hollow cylindrical valve body sealing device fixing member 416 can also be provided outside the recessed portion 408, and the valve body sealing device 340 is a cover A cylinder with a notch 418 on the periphery, as shown in FIG. 9, makes the valve body 30 and the sealing device 340 of the present invention fit and fixed. Through the notch 418, the ink introduction chamber 412 and the ink storage chamber 402 keep the ink supply unblocked when the ink cartridge is working. Meanwhile, the valve body fixing device of the present invention may also be a columnar rod 416 integrally protruding at the top wall 410 of the ink cartridge shown in FIG. 10.

Referring to FIG. 7A, the present invention forms an ink introduction cavity 412 between the valve body 30 and the recessed portion 408 provided in the bottom wall 406 of the ink cartridge, and the diameter is slightly smaller than the diameter of the supporting leg portion 310. In the present invention, ink is reserved in the chamber 412, so that the print head can obtain sufficient ink at the beginning of printing. The ink supply needle 50 of the print head passes through a horn-shaped seal 52 with a film 58 provided below the ink outlet 404, and the chamber 412 and the ink outlet 404 are filled with ink. When the ink cartridge is in operation, a pressure difference is generated in the ink introduction chamber 412. When the pressure reaches 120 mm H2O, the support head 330 of the valve body 30 moves downward; the valve body through hole 332 is separated from the sealing device 340. As a result, the ink fills the entire ink introduction chamber 412 in the direction shown by the arrow in FIG. 7B and is continuously supplied to the print head 50. The valve body 30 of the present invention, which can be opened in a 200~0mm water column pressure, preferably a pressure opening 150~ - 30mm water column ₀

 When the ink supply needle 50 stops absorbing ink, the wide body 30 can be reset by its own elasticity and close the ink supply channel. That is, the valve body 30 of the present invention controls the outflow of the ink stored in the cavity 402.

 Generally, the ink cartridge device should be provided with a through hole 414 in the cavity wall 410, so that atmospheric pressure is applied to the liquid surface to complete the work of supplying ink to the print head. In order to effectively prevent the ink leakage phenomenon that may occur when the ink cartridge is removed from an inverted state, the present invention directly arranges the air vent 414 into the ink storage cavity and extends to about 1/3 of the ink storage cavity, as shown in FIG. 9 It is also possible to consider the processing needs, and replace the integrally arranged protrusion with a hose 420 extending to 1/3 of the ink storage cavity, as shown in FIG. 8. There is another advantage of providing the vent hole 414. When the ink is used up, new ink can be directly injected into the cartridge body 40 without having to remove it from the printing device for replacement. Therefore, since the ink cartridge device 40 of the present invention uses the valve body 30 of the present invention, it greatly facilitates the user and makes full use of the ink.

 At the same time, in order to make the pressure adjustment of the valve body 30 more sensitive, the invention can also add a spring 54 in the ink introduction chamber 412 and abut against the support shoulder 324 of the valve body 30 to ensure that the valve body 30 is reset in time. Figure 8 shows.

Yet another preferred embodiment of the ink cartridge device of the present invention is shown in FIG. 15. First of all, The bottom wall 406 of the ink cartridge is disposed obliquely to the side of the ink outlet 404, so that an adequate ink supply is ensured at the ink outlet. The valve body 30 and the valve body sealing device 340 are placed in the recess 408. A wall 442 on the wall portion of the recess 408 is adapted to the protruding wall portion 344 of the valve body sealing device 340. A slot 418 is provided on the top of the valve body sealing device 340. The valve body sealing device 340 is fixedly connected to the wall portion of the recess 408 through ultrasonic welding. Of course, if the diameter of the valve body support foot 310 of the present invention is designed to be sufficiently small, for example, less than 11 mm, the volume of the ink introduction chamber 412 will be less than 0.4 cubic millimeters. In this case, it is not necessary to reserve ink in the ink introduction chamber 412. Because the part of the air in the ink introduction chamber 412 can be removed by the printing needle during cleaning, it is guaranteed that no air bubbles will be generated during printing. In this preferred embodiment of the present invention, a "U" shaped hose 422 made of rubber material is used to prevent ink leakage. One end is connected to the vent hole 414, and the other end extends close to the top cover 410, that is, it should protrude from the liquid surface.

 At the same time, in order to prevent possible foreign matter such as air bubbles or impurities from entering the printing needle to affect the printing quality, a metal filter 56 is placed at the end of the ink outlet facing the inside of the box, as shown in FIG. 7.

 Preferably, in order to prevent the ink from leaking when the ink cartridge is removed, according to a preferred embodiment of the present invention, a sponge body 436 is provided at the vent hole 414 to absorb the ink, see FIG. 10.

More preferably, in order to prevent ink leakage when the ink cartridge is removed, according to another preferred embodiment of the present invention, it is implemented by providing a check valve 428 at the vent hole 414. See FIG. 1 1 . A stopper 424 with an opening 426 is welded to the valve body cavity 422. A cylindrical valve block 428 with a chute 430 is placed in the valve body cavity 422. The chute 430 gradually widens from the A end to the B end of the valve block 428. As shown in Figure 12A-B. The size of the A end of the valve block 428 is larger than the diameter at the vent hole 414, and the size of the B end of the valve block 428 is smaller than the diameter of the opening 426 of the valve body cavity 422. This can not only keep the ink storage chamber open to the outside air, but also ensure that When the printhead is removed from the inverted position, the valve block 428 can block the vent hole 414 to prevent ink leakage. It is understood that if the ventilation in the present invention The hole 414 is provided with a one-way wide body 428 to prevent ink leakage, so the present invention also particularly needs to provide an ink filling process hole 440 at the box wall 410, and plug it with a plug 438, as shown in Figure 11 Show. If it is necessary to reuse the ink cartridge device 40 of the present invention, the filling operation can be conveniently performed by removing the plug 438.

 FIG. 13 shows still another preferred embodiment of the one-way valve body 428 for preventing leakage provided at the vent hole 414 according to the present invention. For an enlarged schematic diagram, please refer to FIG. 14. In this preferred embodiment, the one-way valve block 428 is provided as a spherical valve block, and is supported by an elastic piece 434 fixed in the valve body cavity 422. The elastic piece 434 is provided with a through hole 432, which can make the air hole 414 and the ink storage The air in the cavity 402 is clear.

 Fig. 15 shows another preferred embodiment of the present invention. The bottom wall 406 of the ink cartridge is provided with an inclination angle to the ink outlet 404 so as to guide the ink toward the ink outlet. The valve body 30 and the valve body sealing device 340 are placed in the recess 408 on the side wall of the recess 408 A step 442 is formed. The valve body sealing device 340 is provided with a through hole 418 and a flange 344 on the top, and the flange 344 is adapted to be fixed to the step 442. The "U" -shaped tube 422 is made of stainless steel. One end is connected to the vent hole 414, and the other end extends into the ink and bends to expose the liquid surface. One end of the vent hole 414 is connected to a "U" shaped tube 422, and the other end is integrally connected to the ink reservoir 448 formed on the outer surface of the cover 410. When the ink cartridge is removed after use and accidentally turned upside down, the ink reservoir 448 acts as a buffer against possible leakage of ink that has not yet been printed, which can effectively prevent ink from spilling out of the ink cartridge. A round groove 444 is formed near the bottom wall of the recess 408, and a metal filter 56 is connected to the bottom wall of the round groove 444 by ultrasonic waves to prevent air bubbles or other impurities from entering the ink outlet 404. The integrally formed seal 52 with the stopper 528 is sealed at the ink outlet 404.

In order to obtain a stable ink supply, the pressure applied to the print head is -200 ~ 0mm water column, preferably -30 ~ -150mm water column. The hardness of the rubber material of the valve body is 25 to 65 degrees, preferably 30 to 55 degrees. Optional rubber materials include silicone rubber, styrene butadiene rubber, butyl Rubber, neoprene, polyurethane rubber, vinyl rubber, etc.

 16A to 16E are other preferred embodiments of the seal at the ink outlet. In FIG. 16A, after the plastic film 64 and a plastic ring 66 are welded and connected, they are placed between two "0" rings 62 to ensure that the plastic film 64 and the sealing ring 62 are firmly connected. In FIG. 16B, the plastic film 68 is sealed to the outside of the ink outlet adjacent to the print needle. In FIG. 16C, a wedge-shaped elastic seal 70 with a diaphragm 72 is placed at the ink outlet 60. In Fig. 16D, the sealing member 74 has a cap shape. In FIG. 16E, a steel ring 78 is added to the cover-like sealing member 76 to increase the rigidity of the sealing member and facilitate the penetration of the printing needle.

But even better, the present invention also specifically designs a seal member 52 that closely fits an ink outlet (not shown) of the ink cartridge device. As shown in FIG. 17A, the seal 52 is used to block the ink outlet and maintain ink. The sealing member 52 is first made of an elastic material, and the hardness of the material is about 30 ° to 50 ° Shore. It includes the following parts of an integral molding design: an annular support portion 520 having a cavity 522 inside, and an outer wall thereof A seal ring portion 524, which bulges inward from the support portion 520; a stopper 526 provided at the central portion, which basically matches the seal ring portion 524 formed by the bulge; and The connecting portion 528 surrounds between the seal ring portion 524 and the stopper 526. It should be understood that the thickness and width of the connecting portion 528 should be much smaller than the thickness and width of the stopper 526 to ensure that the stopper 526 can be broken in time when an ink supply needle (not shown) is inserted. It can be seen that the sealing member 52 of the present invention needs to ensure that the stopper 526 can withstand a certain pressure, such as the pressure from the ink held or the pressure caused by an accident. On the other hand, it is necessary to make the connecting portion 528 easy. fracture. Therefore, the optimal value of the width of the connecting portion 528 of the present invention should be 0 to 0.3 mm _; and the optimal value of its thickness should be 0.15 to 0.4 mm.

In this preferred embodiment of the present invention, the seal ring portion 524 is vertically raised from the support portion 520, that is, the top surface 525 is flush with the bottom surface 525 '. Obviously, when the ink supply needle 50 of the printer is inserted from the cavity 522, the connecting portion 528 is broken first, thereby pushing up the stopper 526, as shown in FIG. 17B. Because in use, the secret The seal 52 needs to hold ink, so the inner wall of the seal ring portion 524 and the ink supply needle 20 should be closely fitted. Therefore, the width of the stopper 524 should be substantially the same as the width of the printing pin 50, and preferably it is slightly smaller than the width of the printing pin 50. In the first preferred embodiment of the present invention, the stopper 526 has a spherical crown shape, and the bottom thereof is set as a flat surface or a concave surface, so as to ensure that the printing needle 50 and the stopper 526 are in stable contact, thereby facilitating the printing needle 50 to block the stopper. 526 is separated from the seal ring portion 528.

 Of course, the stopper 526 of the present invention may have various deformations. As shown in FIG. 18A, the present invention may set the stopper 526 as a cylinder having a sufficient thickness and width. When the printing needle 50 is inserted, the cylindrical stop 526 is also easily separated from the seal ring portion 524, as shown in FIG. 18B. The stopper can also be designed as a cover with a certain thickness, as shown in FIG. 21.

 In particular, in order to enable the stopper 526 to disengage in time, the present invention further sets the top surface 525 of the seal ring portion 524 to be inclined from the support portion 520 toward the center portion at a predetermined angle, as shown in FIG. 6; The inclined top surface 525 should not prevent the block 526 from turning over, and its angle with the horizontal plane is preferably between 30 ° and 45 °.

 Further, the stopper 526 of the present invention having a sufficient thickness is detached from the seal ring portion 524 and cannot block the cooperation between the printing needle 50 and the seal ring portion 528. Therefore, the connecting portion 528 should be connected to the top of the sealing ring portion 524, as shown in FIGS. 17 to 19.

 Since the thickness of the connecting portion 528 of the present invention is much smaller than the thickness of the stopper 526, it is generally preferable to be between 0.15 and 0.4 mm. Therefore, when the connecting portion 526 is integrally designed, it can be designed to have a uniform thickness, as shown in FIG. 20A. Thus, in actual use, if the pushing force from the printing pin 50 is slightly larger, the connecting portion 528 may be completely broken, so that the stopper is completely disengaged from the sealing ring portion 524.

However, in another preferred embodiment of the connecting portion of the present invention, the sealing ring portion 528 is designed to have different thicknesses, as shown in FIG. 20B. In this embodiment, the present invention The thickness of the connecting portion 528 uniformly increases from a portion of the ring portion, as shown in the figure, to the opposite side 529 ′ of the thinnest portion 529. This ensures that the connecting portion 528 of the present invention is broken from the thinnest portion 529, and the connection can still be maintained at the thickest portion 529 '. Of course, it is preferable that the thickness of this thinnest portion 529 is between 0.15 and 0.25 mm; and the thickness of the thickest portion 529 'is between 0.3 and 0.4 mm.

 In fact, for different models of printers from different manufacturers, the parameters will be different, so in order to meet this demand, the present invention specifically designs a seal ring portion 524, that is, the end of the seal ring portion 524 is upward. A wall portion 524 ′ is integrally provided, as shown in FIG. 21, and the wall portion 524 ′ may be substantially consistent with the height of the support portion.

 It can be known that the seal of the present invention is designed in an integrated manner, and takes into account the sealing requirements in various states, such as the non-use state of assembly or transportation and the use state during printing, so it is omitted. In the conventional ink cartridge device, a sealing film is added to the ink outlet, and at the same time, the defect that the sealing member with a film in the prior art is not easily penetrated by the printing needle is overcome. Moreover, in order to further prevent the occurrence of an unexpected situation, the present invention allows the packaging seal 96 for covering the air vent 414 of the ink cartridge to simultaneously cover the ink outlet 404 along the outer side of the case, as another seal insurance measure in a non-printing state. For example, when the vent hole 414 and the ink outlet 404 are located at opposite corners of the box, respectively, the packaging seal 96 may cover the ink outlet 404 along any side, as shown in FIG. 22A; and when the vent hole 414 and the outlet When the ink ports 404 are respectively located on the same side of the box body, the packaging seal 96 may cover the ink port 404 along the front or back, as shown in FIG. 22B.

 It should be understood that although the present invention is described by the above preferred embodiments, according to the technical solution of the present invention, there can be various modifications; and those skilled in the art can make it without departing from the spirit of the present invention. Modifications and deformations should fall within the protection scope of the appended claims of the present invention.

Claims

Rights request 1. An ink cartridge device provided in a printer device, including  A box body provided with at least one cavity therein for storing ink, wherein the box body contains  At least one vent hole for communicating the cavity with the atmosphere;  At least one ink outlet is provided on a wall portion for communicating with a printing needle of a printer device; and  At least one sealing member for blocking the ink outlet for holding ink; and at least one unidirectional valve body for blocking the ink outlet for controlling the flow of ink, which is characterized in that the at least one unidirectional The valve body is disposed inside the at least one cavity, and is integrally provided with  A supporting foot is in sealing contact with the cavity wall of the at least one ink outlet;  A support wall portion bulging from the inside of the support leg portion;  A support shoulder portion formed by bending inward from the support wall portion;  A supporting head is raised from the supporting shoulder and penetrates a central through hole; and the ink cartridge device further includes a wide body sealing device for closing the central through hole of the supporting head.  2. The ink cartridge device according to claim 1, wherein the support wall portion is inclined and bulged upward from the support leg portion.  3. The ink cartridge device according to claim 1, wherein the support shoulder portion bent inward from the inclined wall portion is recessed downward to form a concave surface portion.  4. The ink cartridge device according to claim 1, wherein the support head portion is inclined and protruded from the support shoulder portion. 5. The ink cartridge device according to claim 4, wherein the central through hole of the support head is a tapered through hole having a lower diameter slightly larger than an upper diameter. 6. The ink cartridge device according to claim 5, wherein the inclination angle of the support head is greater than the inclination angle of the support wall portion.  7. The ink cartridge device according to claim 1, wherein a thickness of the supporting leg portion is greater than a wall thickness of the supporting shoulder portion.  8. The ink cartridge device according to claim 1, wherein a wall thickness of the support head portion is greater than a wall thickness of the support shoulder portion.  9. The ink cartridge device according to claim 7 or 8, wherein a thickness of the supporting leg portion is greater than a wall thickness of the supporting head portion.  10. The ink cartridge device according to claim 1, wherein at least one recessed portion is provided on a wall portion communicating with the at least one ink outlet for placing the valve body.  11. The ink cartridge device according to claim 10, wherein a filter device is provided on a bottom wall of the recessed wall portion to filter impurities in the ink.  12. The ink cartridge device according to claim 1, wherein the valve body sealing device presses down the support head of the one-way valve body downward, so that the valve body is in a compressed state.  13. The ink cartridge device according to claim 1, wherein a spring is preset in the valve body, and abuts against the support shoulder of the valve body.  14. The ink cartridge device according to claim 1, wherein the valve body sealing device is a protrusion integrally provided with a wall portion of the box body.  15. The ink cartridge device according to claim 14, wherein the protrusion blocks a central through hole of the support head with a sheath sleeved on an outer side thereof.  16. The ink cartridge device according to claim 1, wherein a device for preventing ink leakage is provided at the vent hole. 17. The ink cartridge device according to claim 16, wherein the ink leakage prevention device is provided by the vent hole wall protruding toward the ink storage cavity. 18. The ink cartridge device according to claim 17, wherein the protrusion extends to 1/3 to 1/2 of the ink storage cavity.  19. The ink cartridge device according to claim 16, wherein the ink leakage preventing device is a curved tube, one end of which is connected to the vent hole, and the other end is exposed to the liquid surface.  20. The ink cartridge device according to claim 16, wherein the means for preventing ink leakage comprises  A body cavity with an opening; and  A valve body is disposed in the valve body cavity, and is used to block the vent hole when the box body is inverted to prevent ink from leaking from the vent hole.  21. The ink cartridge device according to claim 20, wherein the valve body is a cylinder with a chute, and the chute is matched with the valve body cavity and the vent hole, and is used for holding the valve body. The ink storage chamber described above is free from outside air.  22. The ink cartridge device according to claim 20, wherein the valve body is spherical and wide, and is supported by an elastic sheet with a through hole, which is placed on the opening of the valve body cavity for Keep the ink storage cavity open to the outside air.  23. The ink cartridge device according to any one of claims 20 to 22, wherein a top wall of the box body is further provided with a through hole for ink injection, and a plug is used. 24. The ink cartridge device according to claim 16, wherein the ink leakage prevention device is a porous body placed at the vent hole.  25. The ink cartridge device according to claim 1, wherein the ink outlet is disposed on a bottom wall of the case body, and the bottom wall is disposed obliquely toward the ink outlet.  26. The ink cartridge device according to claim 1, wherein the opening pressure of the valve body is a water column of 200 mm to 0 mm. 27. The ink cartridge device according to claim 26, wherein the valve Body opening pressure is a 150mm 30mm water column.  28. The ink cartridge device according to claim 1, wherein at least one sealing ring member is provided at the ink outlet, and at least one sealing film is covered thereon.  29. The ink cartridge device according to claim 28, wherein there are two seal ring members, and a seal film is provided between the two seal ring members.  30. The ink cartridge device according to claim 28 or 29, wherein a ring member for enhancing rigidity is provided on the sealing film.  31. The ink cartridge device according to claim 1, wherein an elastic seal with a diaphragm capable of being punctured is provided at the ink outlet.  The ink cartridge device according to claim 31, wherein the elastic seal is provided with a ring member for strengthening rigidity.  33. The ink cartridge device according to claim 1, wherein the seal is provided inside the ink outlet, and is integrally provided.  A support portion with a cavity inside, which closely cooperates with a wall portion of the ink outlet; a sealing ring portion, which bulges inward from the support portion;  A stopper that cooperates with the seal ring portion formed by the bulge; and  A connecting portion surrounds the seal ring portion and the stopper, and is used to ensure that the stopper is broken when the stopper is subjected to a predetermined pressure.  34. The ink cartridge device according to claim 33, wherein the support portion is ring-shaped.  35. The ink cartridge device according to claim 33, wherein the stopper that cooperates with the raised seal ring portion is provided at a center portion of the seal.  36. The ink cartridge device according to claim 33, wherein the seal ring portion is vertically raised from the support portion. 37. The ink cartridge device according to claim 33, wherein a top surface and a bottom surface of the seal ring portion are disposed in parallel. 38. The ink cartridge device according to claim 36, wherein a top surface of the seal ring portion is provided obliquely from the support portion toward a center.  39. The ink cartridge device according to claim 38, wherein an included angle between the inclined top surface of the sealing ring portion and a horizontal plane is 30 to 45 °.  40. The ink cartridge device according to any one of claims 36 to 39, wherein the connection portion is connected to a top end of the seal ring portion.  41. The ink cartridge device according to claim 33, wherein the stopper has a spherical crown shape.  42. The ink cartridge device according to claim 33, wherein the stopper is cylindrical.  43. The ink cartridge device according to claim 33, wherein the stopper is a round sheet.  44. The ink cartridge device according to claim 43, wherein a wall portion is integrally provided upwardly at an end of the seal ring portion.  45. The ink cartridge device according to claim 33, wherein a width of the connecting portion is 0 to 0.3 mm.  46. The ink cartridge device according to claim 33, wherein a thickness of the connecting portion is much smaller than a thickness of the stopper, and is used to easily pass through a printing needle after the force is broken.  47. The ink cartridge device according to claim 46, wherein the connecting portion has a uniform thickness.  48. The ink cartridge device according to claim 47, wherein the thickness of the connecting portion is between 0.15 and 0.4 mm.  49. The ink cartridge device according to claim 46, wherein the connecting portions have different thicknesses. 50. The ink cartridge device according to claim 49, wherein the connection The thickness of the contact portion increases from a part of the ring portion to the opposite side.  51. The ink cartridge device according to claim 49 or 50, wherein the thickness of the thinnest part of the connection portion is between 0.15 to 0.25mm.  52. The ink cartridge device according to claim 49 or 50, wherein a thickness of a thickest portion of the connection portion is between 0.3 and 0.4 mm.  53. The ink cartridge device according to claim 33, wherein a packaging seal for covering the vent hole is provided on an outer side of the box body, and the ink outlet is simultaneously covered along the box body.  54. A one-way valve body for controlling the flow of ink, characterized in that the valve body includes  A support foot;  A support wall portion bulging from the inside of the support leg portion;  A support shoulder portion formed by being bent inward from the support wall portion; and  A support head protrudes from the support shoulder and passes through a central through hole.  55. The valve body according to claim 54, wherein the support shoulder portion bent inward from the support wall portion is recessed downward to form a concave surface portion.  56. The valve body according to claim 54, wherein the support head portion bulges obliquely from the support shoulder portion.  57. The valve body according to claim 55, wherein the central through hole of the support head portion is a tapered through hole having a diameter at the lower portion slightly larger than the diameter at the upper portion.  58. The valve body according to claim 54, wherein the inclination angle of the support head portion is greater than the inclination angle of the support wall portion.  59. The valve body according to claim 54, wherein a thickness of the support leg portion is greater than a wall thickness of the support shoulder portion. 60. The wide body according to claim 54, wherein a wall thickness of the support head is greater than a wall thickness of the support shoulder. 61. The valve body according to claim 54, wherein a thickness of the support leg portion is greater than a wall thickness of the seal ring portion.