WO2024080118A1 - 液滴吐出方法および液滴吐出装置 - Google Patents
液滴吐出方法および液滴吐出装置 Download PDFInfo
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- WO2024080118A1 WO2024080118A1 PCT/JP2023/034698 JP2023034698W WO2024080118A1 WO 2024080118 A1 WO2024080118 A1 WO 2024080118A1 JP 2023034698 W JP2023034698 W JP 2023034698W WO 2024080118 A1 WO2024080118 A1 WO 2024080118A1
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- Prior art keywords
- droplet
- droplet ejection
- nozzle
- electrostatic
- nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities
- B05B1/083—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities the pulsating mechanism comprising movable parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
- B05B12/1472—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet separate supply lines supplying different materials to separate outlets of the spraying apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/002—Machines or plants for applying coating liquids or other fluent materials by inkjet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/0255—Discharge apparatus, e.g. electrostatic spray guns spraying and depositing by electrostatic forces only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/06—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04576—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads of electrostatic type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14314—Structure of ink jet print heads with electrostatically actuated membrane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/145—Arrangement thereof
- B41J2/15—Arrangement thereof for serial printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0405—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads
- B05B13/041—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
Definitions
- the present invention relates to a droplet ejection method and a droplet ejection device.
- Patent Document 1 discloses an electrostatic ejection inkjet recording device.
- the cross section of the structure formed generally has an arc shape because it is affected by the surface tension of the ink used as the droplet and the wettability of the substrate.
- One of the objectives of the present invention is to form structures with new cross-sectional shapes using an electrostatic ejection inkjet head.
- a droplet ejection method including: using a multi-nozzle head including a plurality of electrostatic droplet ejection nozzles arranged at a predetermined nozzle interval in a first direction and ejecting droplets; ejecting a first droplet from a first electrostatic droplet ejection nozzle of the plurality of electrostatic droplet ejection nozzles to a first droplet ejection position on a target object; scanning the multi-nozzle head in the first direction at a predetermined scanning speed; ejecting a second droplet from a second electrostatic droplet ejection nozzle of the plurality of electrostatic droplet ejection nozzles to the first droplet ejection position; and ejecting a first droplet from the first electrostatic droplet ejection nozzle to the second droplet ejection position, wherein a shape of a first structure formed by the first droplet and the second droplet at the first droplet ejection position is different from a shape of
- the predetermined nozzle spacing may be 20 ⁇ m or more and 500 ⁇ m or less.
- the predetermined scanning speed may be greater than or equal to 0.00001 meters per second and less than or equal to 1 meter per second.
- the viscosity of the solvent in the droplets may be 0.1 cps or more and 10,000 cps or less.
- the amount of droplets ejected from the electrostatic droplet ejection nozzle at one time may be 0.00001 picoliters or more and 50 picoliters or less.
- the multiple electrostatic droplet ejection nozzles may include three or more electrostatic droplet ejection nozzles.
- the first structure and the second structure are connected to form a third structure, and the third structure may have a rectangular cross-sectional shape when viewed from the first direction.
- the end of the third structure may have an arc-shaped cross-sectional shape when viewed from a second direction intersecting the first direction.
- a droplet ejection device including a multi-nozzle head including a plurality of electrostatic droplet ejection nozzles arranged at a predetermined nozzle interval in a first direction for ejecting droplets, and a control unit that ejects a first droplet from a first electrostatic droplet ejection nozzle of the plurality of electrostatic droplet ejection nozzles to a first droplet ejection position on a target object, scans the multi-nozzle head in the first direction at a predetermined scanning speed, ejects a second droplet from a second electrostatic droplet ejection nozzle of the plurality of electrostatic droplet ejection nozzles to the first droplet ejection position, and ejects the first droplet from the first electrostatic droplet ejection nozzle to the second droplet ejection position.
- the predetermined nozzle spacing may be greater than or equal to 20 ⁇ m and less than or equal to 500 ⁇ m.
- the plurality of electrostatic droplet ejection nozzles may include three or more electrostatic droplet ejection nozzles.
- control unit may control the scanning speed based on the material of the droplets.
- FIG. 1 is a schematic diagram of a droplet ejection device according to an embodiment of the present invention.
- FIG. 2 is a plan view of a multi-nozzle head.
- FIG. 2 is an enlarged plan view of a portion of the multi-nozzle head.
- FIG. 2 is an enlarged top view of a droplet ejection nozzle.
- FIG. 2 is an enlarged cross-sectional view of a droplet ejection nozzle.
- 1A to 1C are diagrams illustrating a method for discharging droplets.
- FIG. 4 is a schematic diagram of a discharged droplet.
- FIG. 4 is a schematic diagram of a discharged droplet.
- 1A to 1C are diagrams illustrating a method for discharging droplets.
- FIG. 4 is a schematic diagram of a discharged droplet.
- FIG. 4 is a schematic diagram of a discharged droplet.
- FIG. 4 is a schematic diagram of a discharged droplet.
- FIG. 2 is a schematic diagram of a structure according to one embodiment of the present invention.
- FIG. 2 is a schematic diagram of a structure according to one embodiment of the present invention.
- FIG. 2 is a plan view of a multi-nozzle head.
- 3 is a functional block diagram of a control unit of the droplet ejection device according to the embodiment of the present invention.
- FIG. 1 is an example of a dataset.
- FIG. 4 is a photograph of a multi-nozzle head attached to a mounting portion in this embodiment.
- 1 is a plan view of a structure formed in this example. 1 is a cross-sectional profile image of a structure formed in this example.
- FIG. 2 is a schematic diagram of a structure according to one embodiment of the present invention.
- FIG. 1 is a schematic diagram of a droplet ejection device 100 according to one embodiment of the present invention.
- the droplet ejection device 100 includes a control unit 110, a memory unit 120, a power supply unit 125, a drive unit 130, a mounting unit 140, an ink supply unit 145, a multi-nozzle head 150, a display unit 170, an operation unit 180, an adjustment unit 190, an object holding unit 200, and a housing 210.
- the control unit 110, the memory unit 120, the power supply unit 125, the drive unit 130, the mounting unit 140, the ink supply unit 145, the multi-nozzle head 150, the display unit 170, the operation unit 180, the adjustment unit 190, and the object holding unit 200 are electrically connected by a wiring bus and are provided inside the housing 210.
- the display unit 170, the operation unit 180, and the adjustment unit 190 do not necessarily have to be provided.
- the control unit 110 includes a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other arithmetic processing circuit.
- the control unit 110 uses a preset droplet ejection program to control the droplet ejection process by the multi-nozzle head 150.
- the storage unit 120 functions as a database that stores the droplet ejection program and various information used in the droplet ejection program.
- the storage unit 120 is made of a memory, an SSD, or a memory-capable element.
- the power supply unit 125 applies a voltage to the multi-nozzle head 150 based on a signal input from the control unit 110.
- the power supply unit 125 applies a pulsed voltage (1000V in this example) to the multi-nozzle head 150.
- the voltage is not limited to a pulsed voltage, and a constant voltage may be applied all the time.
- the driving unit 130 is composed of driving members such as a motor, a belt, and gears. Based on instructions from the control unit 110, the driving unit 130 moves the multi-nozzle head 150 in one direction (in this example, the second direction D2) relative to the object 220. The driving unit 130 may also move the object holding unit 200.
- the mounting unit 140 mounts the multi-nozzle head 150.
- the mounting unit 140 mounts the multi-nozzle head 150 by adhering to the plate portion of the multi-nozzle head 150.
- the mounting unit 140 may mount the multi-nozzle head 150 using a jig, adhesive, or the like.
- the ink supply unit 145 (also called an ink tank or ink cartridge) is provided away from the mounting unit 140.
- the ink supply unit 145 stores ink.
- the ink supply unit 145 supplies the stored ink to the multi-nozzle head 150. It is preferable to use ink made of a solvent and a solute or pigment, and more preferably, the solute or pigment component is based on an inorganic substance or metal, and even more preferably, it is preferable to use ultrafine metal particle ink.
- the multi-nozzle head 150 is provided away from the ink supply unit 145.
- the configuration of the multi-nozzle head 150 will be described later.
- the display unit 170 displays control information (text information or image information) based on the control of the control unit 110. At this time, the display unit 170 may display the control information via a GUI (Graphical User Interface). The display unit 170 may also display information about the multi-nozzle head 150.
- control information text information or image information
- GUI Graphic User Interface
- the operation unit 180 includes operable members.
- the operation unit 180 includes buttons, levers, and a numeric keypad.
- the operation unit 180 is used to perform operations such as moving up, down, left, right, pressing, or rotating, or to input numerical values, and information based on the operations is acquired by the control unit 110.
- the display unit 170 may be used as a touch panel.
- the adjustment unit 190 may adjust the position and inclination of the multi-nozzle head 150. Specifically, the adjustment unit 190 can adjust the inclination of the tip 153a of the droplet ejection nozzle 153 of the multi-nozzle head 150 and the orientation of the multi-nozzle head.
- the adjustment unit 190 may use a ⁇ stage or a goniostage.
- the object holding unit 200 has the function of holding the object 220.
- a stage is used as the object holding unit 200.
- the mechanism by which the object holding unit 200 holds the object 220 There are no particular limitations on the mechanism by which the object holding unit 200 holds the object 220, and a general holding mechanism is used.
- the object 220 is vacuum-adsorbed to the object holding unit 200.
- the object holding unit 200 may hold the object 220 using a fixture.
- Fig. 2A is a plan view of the multi-nozzle head 150.
- Fig. 2B is an enlarged plan view of a portion of the multi-nozzle head.
- Fig. 3A is an enlarged top view of the droplet ejection nozzle.
- Fig. 3B is an enlarged cross-sectional view of the droplet ejection nozzle.
- the multi-nozzle head 150 includes a plate portion 151 and multiple droplet ejection nozzles 153 (also called electrostatic droplet ejection nozzles).
- the plate portion 151 is formed in a plate shape.
- the plate portion 151 extends in the first direction D1.
- the plate portion 151 is made of a metal material such as stainless steel.
- the droplet discharge nozzles 153 are provided on one surface of the plate portion 151.
- the droplet discharge nozzles 153 are arranged in a line in the first direction D1.
- the droplet discharge nozzles 153-1, 153-2, ..., 153-(N-1), and 153-N are provided on the plate portion 151.
- N is a natural number equal to or greater than 3.
- the multi-nozzle head 150 includes 10 droplet discharge nozzles 153.
- droplet discharge nozzles 153-1 also referred to as the first electrostatic droplet discharge nozzle
- 153-2 also referred to as the second electrostatic droplet discharge nozzle
- ..., 153-(N-1), and 153-N they will be described as the droplet discharge nozzles 153.
- a metallic material such as nickel is used for the droplet discharge nozzles 153.
- the droplet discharge nozzles 153 have a tapered shape.
- the plate portion 151 has a through hole 151o having an inner diameter r151o larger than the inner diameter r153a of the discharge port (opening portion 153ao of the tip portion 153a of the droplet discharge nozzle 153) of the droplet discharge nozzle 153 in a portion corresponding to the droplet discharge nozzle 153 (overlapping portion).
- the inner diameter of the through hole 151o of the plate portion 151 may be 1 ⁇ m or more and 100 ⁇ m or less.
- the inner diameter of the tip portion 153a of the droplet discharge nozzle 153 may be several hundred nm or more and 50 ⁇ m or less, preferably 1 ⁇ m or more and 15 ⁇ m or less, and more preferably 5 ⁇ m or more and 12 ⁇ m or less.
- a voltage may be applied to the droplet discharge nozzle 153, a voltage may be applied to the plate portion 151 (or the ink supply portion 145), or a voltage may be applied to the ink.
- an electrode may be provided.
- the electrodes may be made of tungsten, nickel, molybdenum, titanium, gold, silver, copper, platinum, or the like. In this case, multiple electrodes may be provided so that a voltage is applied uniformly to the entire plate portion 151.
- a voltage may be applied to a jig that holds the multi-nozzle head 150.
- adjacent droplet ejection nozzles 153 have a predetermined interval (distance S1 between nozzles). From the viewpoint of controlling the shape of the structure to be formed, it is desirable that the distance S1 between adjacent nozzles is 20 ⁇ m or more and 500 ⁇ m or less. In this example, the distance S1 between each droplet ejection nozzle 153 is 200 ⁇ m.
- the shape of the structure can be controlled based on the size of the ejected droplets and the distance between adjacent nozzles.
- FIGS. 4 to 9 are schematic diagrams showing the droplet ejection method in the droplet ejection device.
- the multi-nozzle head 150 described above is used to scan the multi-nozzle head 150 in the first direction D1 in which the droplet ejection nozzles 153 are arranged. From the viewpoint of the drying speed of the droplets, it is desirable that the scanning speed of the multi-nozzle head 150 is 0.00001 m/sec or more and 1 m/sec or less.
- a first droplet 157-1 is ejected from the first droplet ejection nozzle 153-1 of the multiple droplet ejection nozzles 153 to the first droplet ejection position P1 using ink supplied by the ink supply unit 145.
- the amount of droplet ejection is 0.00001 picoliters or more and 50 picoliters or less.
- more particles in the ink remain at the ends of the first droplet 157-1 compared to the center portion during the drying process of the first droplet 157-1 (for example, the coffee ring phenomenon). This forms a structure in which the ends of the first droplet 157-1 are raised, as shown in FIG. 6.
- the second droplet discharge nozzle 153-2 moves to the first droplet discharge position P1 in accordance with the scanning of the multi-nozzle head 150 in the first direction D1.
- the second droplet 157-2 is discharged from the second droplet discharge nozzle 153-2 to the first droplet discharge position P1.
- a structure is formed in which the end of the second droplet 157-2 is raised, and ink particles accumulate in the central groove formed by the first droplet 157-1 as shown in FIG. 9 (the first structure 158-1 is formed).
- the first droplet 157-1 is ejected from the first droplet ejection nozzle 153-1 using ink supplied from the ink supply unit 145 at the second droplet ejection position P2, which is provided in the direction in which the multi-nozzle head 150 moves (first direction D1) with respect to the first droplet ejection position P1, as shown in FIG. 10.
- the structure (158-1) formed at the first droplet ejection position P1 and the structure (2nd structure 158-2) formed at the second droplet ejection position P2 have different shapes depending on the number of ejected droplets.
- the first structure 158-1 and the second structure 158-2 approach a rectangle (trapezoid) as the number of droplet ejections increases.
- a predetermined number of times is exceeded, the shape of the first structure 158-1 and the shape of the second structure 158-2 may become the same.
- first structure 158-1 and the second structure 158-2 are connected when a predetermined condition is satisfied. Specifically, when the distance between the first droplet discharge position P1 and the second droplet discharge position P2 is equal to or less than a predetermined distance, the first structure 158-1 and the second structure 158-2 are connected (a third structure is formed). The same applies to the droplet discharge positions after the second droplet discharge position P2.
- the third droplet ejection nozzle 153-3 and subsequent droplet ejection nozzles 153 which are arranged in the opposite direction of the first direction D1 from the second droplet ejection nozzle 153-2, also eject droplets sequentially to the first droplet ejection position P1 and the second droplet ejection position P2. The same applies to the droplet ejection positions after the second droplet ejection position P2, which are arranged in the first direction D1.
- FIG. 11A is a schematic cross-sectional view of the structure 159 formed in this embodiment when viewed from a first direction D1.
- FIG. 11B is a schematic cross-sectional view of the structure 159 when viewed from a second direction D2.
- droplets are repeatedly ejected at each droplet ejection position, so that the groove in the center is filled while the side edges have a curved shape.
- a linear structure having a rectangular (trapezoidal) cross-sectional shape when viewed from the first direction D1 is formed without going through a lithography process.
- the droplet size is smaller and the drying speed is faster than droplets discharged from a piezoelectric type inkjet nozzle. Also, in this embodiment, the distance between adjacent electrostatic discharge type droplet discharge nozzles and the scanning speed are controlled. Furthermore, droplets are discharged multiple times at the same droplet discharge position. This forms a linear structure having a rectangular cross-sectional shape as described above.
- this embodiment it is possible to form a structure having a new cross-sectional shape that has not been seen before using an electrostatic ejection inkjet head. Since the structure has such a shape, it can also be used as a partition wall, and structures formed by inkjet printing can be used for new purposes.
- Second Embodiment a droplet ejection device different from that in the first embodiment will be described. Specifically, an example of a multi-nozzle head in which droplet ejection nozzles are arranged two-dimensionally will be described. For convenience of explanation, some members will be omitted.
- FIG. 12 is a schematic top view of the multi-nozzle head 150A.
- the droplet ejection nozzles 153 are arranged in a first direction D1 and may also be arranged in a second direction D2.
- multiple linear structures can be formed by ejecting droplets while scanning in the first direction.
- FIG. 13 shows the internal configuration of the control unit 110B. It is a functional block diagram.
- the control unit 110B has an acquisition unit 111, a setting unit 113, and a drive control unit 115.
- the acquisition unit 111 acquires data input by the user via the operation unit 180 or data stored in the storage unit 120.
- FIG. 14 is an example of a data set 500 acquired by the acquisition unit 111.
- the data set 500 includes a material name 500a, a material viscosity 500b, an adjacent nozzle distance 500c, a temperature 500d, and a discharge amount 500e. Note that the data set 500 may not include some of the data.
- the setting unit 113 sets the scanning speed of the multi-nozzle head 150 based on the data set 500 acquired by the acquisition unit 111.
- the drive control unit 115 controls the drive unit 130 using the set scanning speed.
- FIG. 15 is a flowchart for setting the scanning speed of the multi-nozzle head 150 when ejecting droplets.
- control unit 110 acquires information about the multi-nozzle head 150 and information about the material (S110, S120).
- the information about the multi-nozzle head 150 and information about the material are input by the user via the operation unit 180 or are acquired from the storage unit 120.
- the acquired information is processed as an input data set as shown in FIG. 13.
- control unit 110 sets the scanning speed of the multi-nozzle head 150 based on the acquired information about the multi-nozzle head 150 and information about the material (S130). At this time, the control unit 110 may select from a group of previously prepared scanning speed data for the information about the multi-nozzle head 150 and the information about the material. The control unit 110 may also perform machine learning based on previously acquired teacher data to set the scanning speed.
- the control unit 110 outputs the set scanning speed information to the driving unit 130 and drives the driving unit 130 (S140).
- the user can input material information to set the optimal multi-nozzle head scanning speed for forming a structure with a rectangular cross-sectional shape.
- the control unit 110 may set the ejection amount of droplets along with the scanning speed of the multi-nozzle head 150.
- Figure 16 is a photograph of an example multi-nozzle head.
- Figure 17 is a photograph of the multi-nozzle head attached to the attachment section.
- the multi-nozzle head used to form the structure in this example is provided with 5 rows x 20 (100) droplet ejection nozzles. In this case, one line is drawn by five nozzles.
- Figure 18 is a plan view of the structure formed in this example.
- Figure 19 is a cross-sectional profile image of the structure formed in this example.
- the pattern line width of the structure is 36.485 ⁇ m. As shown in Figure 19, it was confirmed that the structure had a rectangular cross-sectional shape.
- the droplet ejection device may include an inspection device.
- the inspection device inspects the inclination of the multi-nozzle head 150 mounted on the mounting unit 140.
- the inspection device can inspect the inclination of the tip 153a of the adjacent droplet ejection nozzle 153 in the multi-nozzle head 150 and the shape of the pattern.
- an imaging device or a step gauge is used for the inspection device.
- a CCD (Charge Coupled Device) type camera or a CMOS (Complementary Metal Oxide Semiconductor) type camera may be used as the imaging device.
- Information acquired by the inspection device may be sent to the control unit 110 and the memory unit 120 to control the scanning speed.
- the inclination between the adjacent droplet ejection nozzles 153 may be adjusted according to the shape of the pattern.
- FIG. 20 is a schematic diagram of structure 159C.
- Structure 159C has a rectangular cross-sectional shape when viewed from the first direction D1, but as shown in FIG. 20, the ends of structure 159C may have an arc cross-sectional shape when viewed from the second direction D2, depending on the number of droplets ejected, if the number of droplets ejected is less than the center of structure 159C.
Landscapes
- Coating Apparatus (AREA)
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
(1-1.液滴吐出装置100の構成)
図1は、本発明の一実施形態に係る液滴吐出装置100の概略図である。
以下に、マルチノズルヘッドの構成について詳細に説明する。図2Aは、マルチノズルヘッド150の平面図である。図2Bは、マルチノズルヘッドの一部を拡大した平面図である。図3Aは、液滴吐出ノズルを拡大した上面図である。図3Bは、液滴吐出ノズルを拡大した断面図である。
以下に、本実施形態における液滴吐出方法を説明する。図4乃至図9は、液滴吐出装置における液滴吐出方法の模式図である。
本実施形態では、第1実施形態とは異なる液滴吐出装置について説明する。具体的には、2次元に液滴吐出ノズルが配列されたマルチノズルヘッドの例について説明する。なお、説明の関係上、適宜部材を省略して説明する。
本実施形態では、取得された液滴の情報に基づいて、マルチノズルヘッドの走査速度を設定する例について説明する。
本発明の思想の範疇において、当業者であれば、各種の変更例および修正例に想到し得るものであり、それら変更例および修正例についても本発明の範囲に属するものと了解される。例えば、前述の各実施形態に対して、当業者が適宜、構成要素の追加、削除、各実施形態の組み合わせ若しくは設計変更を行ったもの、又は、処理の追加、省略若しくは条件変更を行ったものも、本発明の要旨を備えている限り、本発明の範囲に含まれる。
Claims (12)
- 第1方向に所定のノズル間隔で配置され液滴を吐出する複数の静電型液滴吐出ノズル、を含むマルチノズルヘッドを用いることと、
前記複数の静電型液滴吐出ノズルのうち第1静電型液滴吐出ノズルから対象物の第1液滴吐出位置に第1液滴を吐出することと、
前記マルチノズルヘッドを所定の走査速度で前記第1方向に走査することと、
前記複数の静電型液滴吐出ノズルのうち第2静電型液滴吐出ノズルから前記第1液滴吐出位置に第2液滴を吐出することと、
前記第1静電型液滴吐出ノズルから第2液滴吐出位置に第1液滴を吐出することと、を含み、
前記第1液滴吐出位置において前記第1液滴および前記第2液滴により形成された第1構造体の形状と、前記第2液滴吐出位置において前記第1液滴により形成された第2構造体の形状とは異なる、
液滴吐出方法。 - 前記所定のノズル間隔は、20μm以上500μm以下である、
請求項1に記載の液滴吐出方法。 - 前記所定の走査速度は、0.00001メートル毎秒以上1メートル毎秒以下である、
請求項1に記載の液滴吐出方法。 - 前記液滴のうち溶媒の粘度は、0.1cps以上100000cps以下である、
請求項1に記載の液滴吐出方法。 - 前記静電型液滴吐出ノズルからの1回あたりの吐出量は、0.00001ピコリットル以上50ピコリットル以下である、
請求項1に記載の液滴吐出方法。 - 前記複数の静電型液滴吐出ノズルは、3個以上の静電型液滴吐出ノズルを含む、
請求項1に記載の液滴吐出方法。 - 所定の条件を満たすとき、前記第1構造体および前記第2構造体が連結されて第3構造体が形成され、前記第3構造体は、前記第1方向から見たときに矩形の断面形状を有する、
請求項1乃至6のいずれか一項に記載の液滴吐出方法。 - 前記第3構造体の端部は、前記第1方向と交差する第2方向から見たときに円弧の断面形状を有する、
請求項7に記載の液滴吐出方法。 - 第1方向に所定のノズル間隔に配置され液滴を吐出するための複数の静電型液滴吐出ノズル、を含むマルチノズルヘッドと、
前記複数の静電型液滴吐出ノズルのうち第1静電型液滴吐出ノズルから対象物の第1液滴吐出位置に第1液滴を吐出し、
前記マルチノズルヘッドを所定の走査速度で前記第1方向に走査し、
前記複数の静電型液滴吐出ノズルのうち第2静電型液滴吐出ノズルから前記第1液滴吐出位置に第2液滴を吐出し、
前記第1静電型液滴吐出ノズルから第2液滴吐出位置に第1液滴を吐出する制御部と、を含む、
液滴吐出装置。 - 前記所定のノズル間隔は、20μm以上500μm以下である、
請求項9に記載の液滴吐出装置。 - 前記複数の静電型液滴吐出ノズルは、3個以上の静電型液滴吐出ノズルを含む、
請求項10に記載の液滴吐出装置。 - 前記制御部は、前記液滴の材料に基づいて、前記走査速度を制御する、
請求項9乃至11のいずれか一項に記載の液滴吐出装置。
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| KR1020257005652A KR20250036928A (ko) | 2022-10-11 | 2023-09-25 | 액적 토출 방법 및 액적 토출 장치 |
| CN202380058042.8A CN119698329A (zh) | 2022-10-11 | 2023-09-25 | 液滴喷出方法以及液滴喷出装置 |
| IL319968A IL319968A (en) | 2022-10-11 | 2023-09-25 | Method for ejecting liquid droplets and device for ejecting liquid droplets |
| EP23877124.0A EP4603195A1 (en) | 2022-10-11 | 2023-09-25 | Liquid drop ejection method and liquid drop ejection device |
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Citations (8)
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| JPS5849271A (ja) * | 1981-09-17 | 1983-03-23 | Fuji Photo Film Co Ltd | インクジエツトプリンタ |
| JPH034967A (ja) | 1989-05-30 | 1991-01-10 | Matsushita Electric Works Ltd | 木質板の塗装方法 |
| JP2002211011A (ja) * | 2001-01-17 | 2002-07-31 | Ricoh Co Ltd | インクジェット記録装置及びプリンタドライバ |
| JP2003182071A (ja) * | 2001-12-17 | 2003-07-03 | Seiko Epson Corp | インクジェットヘッド及びその製造方法並びにインクジェット記録装置及びその製造方法、カラーフィルタの製造装置及びその製造方法、並びに電界発光基板製造装置及びその製造方法 |
| JP2005305962A (ja) * | 2004-04-26 | 2005-11-04 | Fuji Photo Film Co Ltd | インクジェット記録方法 |
| JP2006253482A (ja) * | 2005-03-11 | 2006-09-21 | Konica Minolta Holdings Inc | 静電吸引型インクジェット用基板、パターン形成方法及びパターン付基板 |
| WO2020217755A1 (ja) * | 2019-04-25 | 2020-10-29 | 株式会社Sijテクノロジ | 液滴吐出装置および液滴吐出方法 |
| WO2021065435A1 (ja) * | 2019-10-02 | 2021-04-08 | 株式会社Sijテクノロジ | 液滴吐出装置および液滴吐出方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1034967A (ja) | 1996-07-19 | 1998-02-10 | Fuji Xerox Co Ltd | インクジェット記録装置 |
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2022
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- 2023-09-25 CN CN202380058042.8A patent/CN119698329A/zh active Pending
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- 2023-09-25 WO PCT/JP2023/034698 patent/WO2024080118A1/ja not_active Ceased
- 2023-09-25 EP EP23877124.0A patent/EP4603195A1/en active Pending
- 2023-09-27 TW TW112137124A patent/TW202415555A/zh unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5849271A (ja) * | 1981-09-17 | 1983-03-23 | Fuji Photo Film Co Ltd | インクジエツトプリンタ |
| JPH034967A (ja) | 1989-05-30 | 1991-01-10 | Matsushita Electric Works Ltd | 木質板の塗装方法 |
| JP2002211011A (ja) * | 2001-01-17 | 2002-07-31 | Ricoh Co Ltd | インクジェット記録装置及びプリンタドライバ |
| JP2003182071A (ja) * | 2001-12-17 | 2003-07-03 | Seiko Epson Corp | インクジェットヘッド及びその製造方法並びにインクジェット記録装置及びその製造方法、カラーフィルタの製造装置及びその製造方法、並びに電界発光基板製造装置及びその製造方法 |
| JP2005305962A (ja) * | 2004-04-26 | 2005-11-04 | Fuji Photo Film Co Ltd | インクジェット記録方法 |
| JP2006253482A (ja) * | 2005-03-11 | 2006-09-21 | Konica Minolta Holdings Inc | 静電吸引型インクジェット用基板、パターン形成方法及びパターン付基板 |
| WO2020217755A1 (ja) * | 2019-04-25 | 2020-10-29 | 株式会社Sijテクノロジ | 液滴吐出装置および液滴吐出方法 |
| WO2021065435A1 (ja) * | 2019-10-02 | 2021-04-08 | 株式会社Sijテクノロジ | 液滴吐出装置および液滴吐出方法 |
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| CN119698329A (zh) | 2025-03-25 |
| JP2024056547A (ja) | 2024-04-23 |
| IL319968A (en) | 2025-05-01 |
| KR20250036928A (ko) | 2025-03-14 |
| EP4603195A1 (en) | 2025-08-20 |
| TW202415555A (zh) | 2024-04-16 |
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