Liquid ejection module and liquid ejection head

A liquid ejection head and liquid technology, which is applied in the direction of printing and inking devices, can solve the problems of not being able to obtain the expected results and lower printing density, and achieve the effect of suppressing uneven printing

Active Publication Date: 2019-07-05
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the amount of liquid ejected is small, the printing density becomes low, so that the desired result cannot be obtained

Method used

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  • Liquid ejection module and liquid ejection head
  • Liquid ejection module and liquid ejection head
  • Liquid ejection module and liquid ejection head

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0186] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In addition, since the basic configuration of the present embodiment is the same as that of the first application example, only the characteristic points will be described below.

[0187] Figure 22A It is a perspective view showing the liquid ejection module 200 of the printing apparatus 1000 of this embodiment. The liquid ejection module 200 has a configuration in which the printing element substrate 10 and the flexible circuit board 40 are arranged on the supporting member 30 . Figure 22B It is an exploded perspective view showing the liquid ejection module 200 . The terminal 16 of the printing element substrate 10 and the terminal 41 of the flexible circuit board 40 are electrically connected to each other by metal wiring (not shown), and the connection portion is covered by the sealing member 110 for protection. The supporting member 30 is provided with a ...

no. 2 approach

[0207] Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In addition, since the basic configuration of the present embodiment is the same as that of the first application example, only the characteristic points will be described below.

[0208] Figure 25A is a diagram showing the printing element substrate 400 of this embodiment, Figure 25B is an exploded perspective view showing the liquid ejection module 500, Figure 25C It is a diagram showing the liquid ejection head 600 in which the liquid ejection module 500 is disposed.

[0209] In the configuration of the first embodiment, the longest distance from the opening 21 to the ejection port 13 is different between the ejection port rows. For example, as from Figure 23A As understood, from the comparison between the distance between the opening 21 at the right end of the figure of the discharge port row 14a and the discharge port 13 and the distance between the o...

no. 3 approach

[0216] Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. In addition, since the basic configuration of the present embodiment is the same as that of the first application example, only the characteristic points will be described below.

[0217] Figures 26A to 26C is a diagram showing the structure of the printing element substrate 10 . Figure 26A shows the overall outline of the printing element substrate 10, Figure 26B yes Figure 26A Enlarged view of part XXVIb of Figure 26C is along Figure 26A A cross-sectional view taken along line XXVIc-XXVIc.

[0218] In this embodiment, the structure of the path for supplying ink to the ejection port is different from that of the above-described embodiment. In the above-described embodiments, the configuration in which the passage for supplying ink to the ejection port and the passage for recovering ink from the ejection port are divided has been described. However, in...

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PUM

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Abstract

To provide a liquid ejection module and a liquid ejection head capable of suppressing printing unevenness. Therefore, the openings are arranged such that the center position of at least one opening among the plurality of ejection port rows is not arranged on the same straight line extending in the moving direction of the relatively moving printing medium with respect to the center positions of the other openings.

Description

technical field [0001] The present invention relates to a liquid ejection module and a liquid ejection head for ejecting liquid such as ink. Background technique [0002] In recent inkjet printing apparatuses, liquid ejection elements are densely arranged in a liquid ejection head in order to print high-quality images at a higher speed. In this liquid ejection head, since the passages are densely arranged as compared with the prior art, the size of the passages is reduced. [0003] When the size of the passage is reduced, the flow resistance increases when the liquid flows through the passage, thereby increasing the pressure loss. For this reason, the negative pressure at the discharge port increases, which may affect the printing operation. For example, when the negative pressure increases, the meniscus of the discharge port retracts toward the inside of the discharge port, so that the liquid discharge amount becomes smaller than that in a low negative pressure state. Wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/14
CPCB41J2/14016B41J2202/20
Inventor 守屋孝胤笠井信太郎中川喜幸齐藤亚纪子石田浩一山田辰也岩永周三户塚绚子石绵友树佐藤智厚
Owner CANON KK
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