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Piezoelectric ink jet head and printing device with piezoelectric ink jet head

A technology of ink head and piezoelectric ceramics, which is applied in the field of piezoelectric inkjet head and printing equipment, can solve the problems of small deformation of inkjet head and unfavorable large particle size ink ejection, etc., achieve large deformation pressure, increase ejection speed, The effect of large amount of deformation

Active Publication Date: 2014-08-20
PAIHE SCI & TECH HLDG CO LTD BEIJING
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a piezoelectric inkjet head and a printing device including the piezoelectric inkjet head, which can effectively solve the problem that the deformation of the inkjet head is small, which is not conducive to the ejection of large particle diameter ink

Method used

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  • Piezoelectric ink jet head and printing device with piezoelectric ink jet head
  • Piezoelectric ink jet head and printing device with piezoelectric ink jet head
  • Piezoelectric ink jet head and printing device with piezoelectric ink jet head

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Embodiment Construction

[0031] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0032] In one aspect, the present invention provides a piezoelectric inkjet head, such as Figure 1-12 As shown, including piezoelectric ceramics 1, 1' and nozzle plates 5, 5', piezoelectric ceramics 1, 1' are provided with several strip-shaped channel walls 13, 13', between two adjacent channel walls 13, 13' Grooves 14, 14' (ie, ink channels) are formed between them, and metal internal electrodes 12, 12' are embedded in the channel walls 13, 13', thereby forming a piezoelectric bimorph structure. The outer surface of the channel walls 13, 13' External electrodes 3, 3' are provided, and the polarization direction of the channel walls 13, 13' is perpendicular to the channel walls 13, 13';

[0033] The nozzle plates 5, 5' are covered on the far-end surfac...

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Abstract

The invention discloses a piezoelectric ink jet head and a printing device with the piezoelectric ink jet head, and belongs to the technical field of ink jet printing. The ink jet head comprises a piezoelectric ceramic and a nozzle plate. The piezoelectric ceramic is provided with a plurality of strip-shaped channel walls, a groove is formed between every two adjacent channel walls, metal inner electrodes are embedded in the channel walls to form a piezoelectric bimorph structure, and the outer surfaces of the channel walls are provided with outer electrodes. The nozzle plate covers the far end faces of the channel walls, a flexible sealing substance is arranged between the nozzle plate and the channel walls at intervals, the nozzle plate is provided with nozzles, the number of the nozzles is equal to the number of grooves, and the nozzles correspond to the grooves in position. According to the piezoelectric ink jet head, the channel walls are powered up and deformed in a d31 transverse bending mode, large deformation can be produced, large deformation pressure can be produced on ink in an ink channel, large-grain-size ink can be ejected, and the ejecting speed can be improved.

Description

technical field [0001] The invention relates to the technical field of inkjet printing, in particular to a piezoelectric inkjet head and printing equipment including the piezoelectric inkjet head. Background technique [0002] As the core part of ceramic inkjet printers, ceramic nozzles account for the highest cost, the most important, and the highest technical content. Domestic research and development to manufacturing are blank, and they are completely dependent on imports. In order to protect the color material structure in the ink as much as possible, and better enhance the color development effect and ceramic tile decoration effect, it is generally necessary to increase the particle size of the ceramic material ink, and expand the average particle size of the existing ceramic material ink to 300nm. To use the particle size range of 0.8 to 8 microns, it is necessary to redesign the spray unit structure and spray principle of the nozzle to achieve the purpose of increasin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/045
Inventor 仲作金张淑兰崔宏超
Owner PAIHE SCI & TECH HLDG CO LTD BEIJING
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