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Piezoelectric ink jet head

A technology of ink head and ink, which is applied in printing and other directions, and can solve problems affecting the driving state of the driving area

Active Publication Date: 2005-02-02
KYOCERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Although far less than the influence of adjacent driving regions, it will affect the driving state of a specific driving region even in the driving state of another adjacent driving region and / or the driving state of adjacent driving regions in adjacent columns.

Method used

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  • Piezoelectric ink jet head
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  • Piezoelectric ink jet head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The produced piezoelectric inkjet head has Figure 1 ~ Figure 4 The structure shown, and the area of ​​the pressure chamber 2 is 0.2mm 2 , Width 200μm, depth 80μm, nozzle section 3 diameter 25μm, length 30μm, nozzle flow path 4 diameter 200μm, length 800μm, supply port 5 diameter 25μm, length 30μm, and the width of the partition wall 1e between the pressure chambers 2 W1 is 82 μm, and width W2 is 82 μm. The height H of the partition wall 1e is the same as the depth of the pressurized chamber 2, and is 80 μm.

Embodiment 2

[0094] The produced piezoelectric inkjet head has Figure 1 ~ Figure 3 , Figure 5 The structure shown, and the area of ​​the pressure chamber 2 is 0.2mm 2 , Width 200μm, Depth 80μm, Nozzle 3 has a diameter of 25μm, Length 30μm, Nozzle flow path 4 has a diameter of 200μm, length 800μm, Supply port 5 has a diameter of 25μm, length 30μm, and the partition wall 1e between the pressurized chamber 2 The width W1 is 82 μm, and the width W2 is 98 μm. The height H of the partition wall 1e is the same as the depth of the pressurized chamber 2, and is 80 μm.

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PUM

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Abstract

The present invention is directed to a piezoelectric ink jet head wherein the partition walls that separate the adjacent recesses that make the pressure chambers are formed to have such a cross sectional shape as the width W1 in the planar direction at the upper end on the side of the substrate where the drive section is formed and height H in the direction of substrate thickness satisfy the expression (1): W1>=H (1) while the width W1 and W2 of the lower end at the bottom of the recess of the substrate in the planar direction satisfy the expression (2): W1<=W2 (2) in order to prevent the dot size and dot shape of the picture to be formed from varying as the state of driving the individual drive regions or the state of driving the individual piezoelectric elements are influenced by the state of driving the other plurality of drive regions or the state of driving the individual piezoelectric elements that surround the former.

Description

Technical field [0001] The present invention relates to a piezoelectric inkjet head, in particular to a piezoelectric inkjet head suitable for printers, copiers, facsimile machines, and their combined machines. Background technique [0002] Piezoelectric inkjet heads that are used in drop-on-demand inkjet printers and the like and use the electrostrictive effect of piezoelectric elements as the driving source, for example, as described in Japanese Patent Publication JP-H05-318731-A2 (1993) , The pressure chambers filled with ink are arranged along the direction of one side of the plate-shaped substrate, and the nozzles for ejecting ink are connected with each of the pressure chambers. At the same time, each pressure chamber is equipped with a piezoelectric The drive part of the component is a widely used type. [0003] In the above-mentioned piezoelectric inkjet head, among the piezoelectric elements corresponding to each pressure chamber, any one or two or more piezoelectric ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/14
CPCB41J2002/14266B41J2/14233B41J2/045B41J2/1404
Inventor 佐武健一吉村健一
Owner KYOCERA CORP