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Liquid ejection head

A liquid ejection head, liquid technology, applied in the direction of inking device, printing, etc., can solve problems such as mixing

Active Publication Date: 2020-03-20
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, generalization of the inlet pipes of the pressure chambers each communicating with each of the plurality of kinds of liquids may result in mixing of the plurality of kinds of liquids

Method used

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  • Liquid ejection head
  • Liquid ejection head
  • Liquid ejection head

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0040] will refer to Figure 1 to Figure 3 The liquid ejection head 11 according to the first embodiment is described. The liquid ejection head 11 is provided in a liquid ejection device 10 such as an inkjet printer.

[0041] [Structure of liquid ejecting device]

[0042] The liquid ejection device 10 includes a platen 12 , a transport mechanism 13 and a line head 14 . The platen 12 is a support on which the sheet 15 can be mounted. The transport mechanism 13 includes a pair of transport rollers 13a, 13a. The platen 12 is located between the pair of conveying rollers 13a and 13a in the conveying direction, so that the sheet 15 is conveyed in the conveying direction by the pair of conveying rollers 13a, 13a.

[0043] The line head 14 extends in the longitudinal direction by a length greater than the length in the width direction of the sheet 15 . The longitudinal direction is perpendicular to the conveying direction, and is an example of "vertical direction". The line hea...

no. 2 example

[0087] will refer to Figure 4 with Figure 5 A head 111 according to the second embodiment is described in which the same parts and components are denoted by the same reference numerals as those shown in the first embodiment to avoid duplication of description. The head 111 further includes a damper plate 64 and a second plate 70 .

[0088]The damper plate 64 is laminated on the upper surface of the first plate 60 , and the second plate 70 is laminated on the upper surface of the damper plate 64 . The boards are bonded together by adhesive. Alternatively, the damper plate 64 may be integral with the first plate 60 . In the latter case, the lower surface of the first plate 60 made of metal such as SUS is subjected to half etching to form headers 61 , 62 , 63 . The upper portion of the metal plate remaining on each upper end of each header acts as a damper plate 64 .

[0089] The damper plate 64 is a single layer such as a resin layer and a metal layer made of polyimide re...

no. 3 example

[0095] Next will refer to Figure 6A to Figure 7 The head 211 according to the third embodiment is described. The third embodiment is the same as the second embodiment except for the second plate 170 corresponding to the second plate 70 of the second embodiment. According to the third embodiment, the flow path 33 further comprises a junction passage 71 fluidly connected to the first header 61 and the second header 62 .

[0096] Specifically, the second plate 170 is formed with a plurality of joint passages 71 each connecting each first header 61 and each second header 62 together. Each joint passage 71 is positioned to overlap each first header 61 and each second header 62 in the lamination direction, and extends through the thickness of the second plate 170 in the lamination direction. Therefore, each lower open end of each joint passage 71 is connected to each first header 61 and each second header 62 , thereby connecting each first header 61 to each second header 62 .

...

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PUM

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Abstract

A liquid ejection head includes a plurality of sets of a first row, a second row, and a flow path in communication with the first row and the second row. Each of the plurality of sets are provided foreach respective one of a plurality of kinds of liquids different from one another. The first row includes a plurality of first pressure chambers. The second row includes a plurality of second pressure chambers. The second row is positioned beside the first row. The flow path is in communication with the plurality of first pressure chambers and the plurality of second pressure chambers. The flow path includes a plurality of first communication passages, a plurality of second communication passages, a plurality of third communication passages, a plurality of fourth communication passages, a first manifold, a second manifold, and a common manifold.

Description

technical field [0001] The present disclosure relates to a liquid ejection head. Background technique [0002] Japanese Patent Application Laid-Open No. 2013-67178 discloses an inkjet head. The inkjet head includes a head plate where two rows of a plurality of pressure chambers, an ink discharge passage, and a pair of ink supply passages are formed. An ink discharge passage is formed between the two rows of the plurality of pressure chambers. The two rows of pressure chambers and ink discharge passages are located between the pair of ink supply passages. The ink supply path is connected to the tank through an inlet tube, and the ink discharge path is connected to the tank through an outlet tube. [0003] The pressure chamber described in Japanese Patent Application Laid-Open No. 2013-67178 is configured to allow a single kind of liquid to flow through the pressure chamber. This publication does not disclose a pressure chamber allowing multiple kinds of liquids to flow th...

Claims

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Application Information

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IPC IPC(8): B41J2/14
CPCB41J2/14032B41J2/14233B41J2202/12B41J2002/14362B41J2002/14241B41J2002/14459B41J2002/14419B41J2/03B41J2/055
Inventor 水野泰介
Owner BROTHER KOGYO KK