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Ink-jet head for ink-jet printer

An inkjet printer, inkjet head technology, applied in printing, inking device, etc., can solve the problem of difficult to miniaturize the printer

Inactive Publication Date: 2003-07-02
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the components around the inkjet head, including the paper feeding mechanism, and the inkjet head itself are large, which makes it difficult to miniaturize the entire printer

Method used

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  • Ink-jet head for ink-jet printer
  • Ink-jet head for ink-jet printer
  • Ink-jet head for ink-jet printer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

[0025] First, the main body of an inkjet head according to an embodiment of the present invention will be described.

[0026] Figure 4 It is a plan view of the inkjet head 1 described in this embodiment. The ink-jet head 1 is used in an ink-jet printer to record an image on recording paper by ejecting ink according to image data. The inkjet head 1 has a main body 8 having an elongated substantially rectangular shape. On the printing surface 8a defined by the main body 8, a plurality of trapezoidal piezoelectric modules 18 are arranged.

[0027] Figure 7 is an enlarged plan view of an inkjet module 18 and a portion of an adjacent inkjet module 18 . image 3 is an exploded view of part of the main body 8 and part of the piezoelectric module 18 .

[0028] figure 2 is an enlarged sectional view of main parts of the main body 8 and the piezo...

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PUM

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Abstract

An inkjet head employed in an inkjet printing apparatus includes a main body provided with a printing surface, which has a substantially rectangular elongated shape, and a plurality of piezoelectric modules. Each of the piezoelectric modules has a substantially trapezoidal shape, and is provided with a plurality of piezoelectric unit structures. The plurality of piezoelectric modules are arranged along a longitudinal direction of the printing surface such that upper base of the trapezoidal shape is located at a central portion in a direction perpendicular to the longitudinal direction. Further, the plurality of piezoelectric modules are oriented in opposite directions alternately in the direction perpendicular to the longitudinal direction.

Description

Background of the invention [0001] The present invention relates to an inkjet head of an inkjet printer, and more particularly, to an inkjet head provided with a piezoelectric element unit having a unit matrix of a plurality of piezoelectric devices. [0002] In general, ink jet heads using stacked piezoelectric actuators are known. An example of such an inkjet head is disclosed in US Patent 5,402,159, the contents of which are incorporated herein by reference. In the inkjet head of the above-mentioned patent, a flat piezoelectric actuator comprising a plurality of laminated piezoelectric sheets is attached to a cavity plate formed by a plurality of nozzles and corresponding pressure chambers. [0003] In the patent publication of Japanese Examined Application HEI2-4428 or HEI7-67803, an inkjet head having a cavity plate provided with diamond-shaped pressure chambers is disclosed. [0004] In Japanese Patent No. 2,752,843, a thermal ink jet head having the same width as the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/045B41J2/055B41J2/14
CPCB41J2/14201B41J2002/14306B41J2002/14459B41J2202/20
Inventor 广田淳渡边英年坂井田惇夫
Owner BROTHER KOGYO KK