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Liquid discharge device

A liquid and liquid inflow technology, applied in printing and other directions, can solve problems that have not been considered

Active Publication Date: 2019-03-05
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the liquid ejection device of Patent Document 1, since the pressure chambers are arranged in a row, the distance between adjacent nozzles is determined according to the volume of the pressure chambers, and no consideration is given to increasing the density of the nozzles.

Method used

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Experimental program
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no. 1 approach

[0031] A1. The structure of the liquid ejection device:

[0032] figure 1 It is an explanatory diagram showing a schematic configuration of the liquid ejection device 100 in the first embodiment of the present invention. The liquid ejection device 100 includes a tank 10 , a booster pump 20 , a supply channel 30 , a head 200 , and a control unit 40 . In this embodiment, the liquid discharge device 100 is a device that discharges a liquid containing a solute and a solvent.

[0033] Liquid is accommodated in the tank 10 . As the liquid, for example, ink having a predetermined viscosity can be exemplified. As a predetermined viscosity, at room temperature (25 degreeC), 50 mPa*s or more and 40,000 mPa*s or less can be illustrated. The liquid in the tank 10 is supplied to the head 200 by passing through the supply channel 30 by the booster pump 20 . The pressurizing pump 20 applies a pressure of, for example, 10 kPa to 10 MPa to the liquid. The liquid supplied to the head 200 ...

no. 2 approach

[0062] Figure 8 It is an explanatory diagram showing a schematic configuration of the head portion 200b in the second embodiment. The head portion 200b in the second embodiment includes 12 sets of nozzles 211 , a pressure chamber 210 , and a volume changing unit 220 . In the second embodiment, the volume changing units 220 are arranged in three rows extending in the left-right direction of the paper. The volume changing parts 220 are located on the same plane and are arranged so as not to overlap with adjacent volume changing parts 220 . In addition, in Figure 8 In , the illustration of the actuator 240 that operates the blocking unit 230 is omitted.

[0063] Figure 9 , Figure 10 as well as Figure 11 Both are cross-sectional views showing the vicinity of the pressure chamber 210 . Figure 9 for from Figure 8 It is a cross-sectional view when viewed from the direction of VIII in , and shows the pressure chamber 210 corresponding to the volume changing portion 220 ...

no. 3 approach

[0069] Figure 14 It is an explanatory diagram showing a schematic configuration of the head portion 200c in the third embodiment. In the head 200 of the first embodiment, the volume changing unit 220 and the pressure chamber 210 are arranged in the horizontal direction, whereas in the head 200c of the third embodiment, the volume changing unit 220 and the pressure chamber are arranged in the direction of gravity. 210. In the third embodiment, ten sets of nozzles 211 , pressure chambers 210 , and volume changing units 220 are provided. In the third embodiment, the volume changing units 220 are arranged in six rows extending in the left-right direction of the paper.

[0070] In the third embodiment, as the blocking portion 230 , a plurality of splitting and blocking portions 232 that are independently movable and capable of blocking one or more inflow holes 212 are provided. In the present embodiment, two dividing and breaking parts 232 are provided. The dividing and breaki...

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PUM

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Abstract

The invention provides a technique for increasing the density of a nozzle. The liquid discharge device includes a plurality of volume changing portions and at least one blocking portion. The pluralityof volume changing portions are in combination with a plurality of pressure chambers which communicate with nozzles for discharging a liquid and which have inlets through which the liquid flows intothe plurality of pressure chambers. The at least one blocking portion blocks communication at the inlets. The plurality of volume changing portions are arranged in a plurality of rows spaced from oneanother. In a direction along the plurality of rows, the plurality of rows of volume changing portions are staggered from one another. The liquid is discharged from the nozzles by using the pluralityof volume changing portions in a state in which the inlets are blocked by the at least one blocking portion.

Description

technical field [0001] The present invention relates to a liquid ejection device. Background technique [0002] Patent Document 1 discloses a liquid ejection device including a plurality of nozzles for ejecting liquid droplets, and pressure chambers communicating with the nozzles, wherein the plurality of nozzles are arranged in a row, and the plurality of pressure chambers are also arranged Arranged in a column. [0003] In the liquid ejection device of Patent Document 1, since the pressure chambers are arranged in a row, the pitch between adjacent nozzles is determined according to the volume of the pressure chambers, and no consideration is given to increasing the density of the nozzles. Therefore, a technique for increasing the density of nozzles is desired. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2007-320042 Contents of the invention [0005] The present invention has been made to solve at least a part of the problems described above, and can be i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/045
CPCB41J2/04501B41J2/04581B41J2/04588B41J2/14274B41J2/04525B41J2/14201
Inventor 须贝圭吾
Owner SEIKO EPSON CORP