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Ink jet head, manufacturing method of ink jet head and ink jet printer having ink jet head

一种制造方法、喷墨头的技术，应用在印刷、着墨装置等方向，能够解决生产合格率低、打印质量差等问题

Inactive Publication Date: 2006-04-12
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, from the overall view of the inkjet head, a warp (Warp) protruding toward the execution unit occurs.
Also, this warpage is the cause of poor print quality and low production yield

Method used

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  • Ink jet head, manufacturing method of ink jet head and ink jet printer having ink jet head
  • Ink jet head, manufacturing method of ink jet head and ink jet printer having ink jet head
  • Ink jet head, manufacturing method of ink jet head and ink jet printer having ink jet head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0093] figure 1 It is a schematic diagram of an inkjet printer including an inkjet head according to a first embodiment of the present invention. figure 1 The inkjet printer 101 shown is a color inkjet printer having four inkjet heads 1 . In this printer 101, a paper feed unit 111 is formed on the left side of the figure, and a paper discharge unit 112 is formed on the right side of the figure.

[0094] A paper conveyance path for conveying the paper from the paper feed unit 111 to the paper discharge unit 112 is formed inside the printer 1 . On the downstream side of the paper feeding part 111, a pair of paper feeding rollers 105a, 105b are arranged for nip and feeding the image recording medium, that is, printing paper. The printing paper is conveyed from left to right in the figure by a pair of paper feed rollers 105a, 105b. Two pulleys 106, 107 are arranged in the middle of the paper conveying path, and an endless conveying belt 108 is stretched between these two pulley...

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PUM

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Abstract

An ink-jet head comprises a passage unit including a nozzle plate unit having a nozzle plate in which nozzles are formed, and a main unit fixed on said nozzle plate unit in a laminating direction and having a plurality of pressure chambers each having one end connected with a nozzle and the other end to be connected with an ink supply source, the plurality of pressure chambers being arranged along a plane to neighbor each other, and an actuator unit fixed on the opposite side of said main unit in said passage unit with respect to said nozzle plate unit, for changing the volume of each of said pressure chambers. The linear expansion coefficient of a material making said actuator unit is smaller than that of a material making said main unit, and the linear expansion coefficient of a material making said nozzle plate unit is smaller than that of a material making said main unit.

Description

technical field [0001] The present invention relates to an ink jet head which ejects ink onto a recording medium to perform printing, a method for manufacturing the ink jet head, and an ink jet printer having the ink jet head. Background technique [0002] In an inkjet printer, an inkjet head distributes ink supplied from an ink tank into a plurality of pressure chambers. Then, a pulse-shaped pressure is selectively applied to the pressure chamber by an execution unit composed of a thin piezoelectric ceramic (piczoelectric ceramic) to generate a pressure wave, so that the ink flows from the nozzles (nozzles) connected to each pressure chamber. ) spray out. A printing job is performed while the inkjet head is reciprocated at high speed in the transverse direction of the printing paper. [0003] In conventional inkjet heads, pressure chambers and ink passages (ink passages) are formed by cutting piezoelectric ceramics with a diamond cutter or the like. Driving electrodes ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/135B41J2/16B41J2/14
CPCB41J2202/03B41J2/1626B41J2002/14225B41J2002/14491B41J2/1623B41J2202/18B41J2/1643B41J2/14209B41J2002/14306B41J2002/14459B41J2202/20B41J2/1609B41J2/1642
Inventor 坂井田惇夫广田淳
Owner BROTHER KOGYO KK