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Inkjet print-head

An inkjet print head and ink technology, applied in printing, inking devices, etc., can solve problems such as ink return and energy efficiency reduction

Inactive Publication Date: 2007-07-04
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Reflow of ink and loss of energy efficiency due to ink path structures have been described with reference to thermal inkjet printheads
However, this problem also occurs in piezo inkjet printheads with the same ink path structure

Method used

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Examples

Experimental program
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Embodiment Construction

[0023] The present invention will now be described more fully with reference to the accompanying drawings, in which embodiments of the invention are shown. In the drawings, like reference numerals identify like elements, and the size and thickness of layers and regions are exaggerated for clarity.

[0024] 3 is a plan view of an inkjet printhead according to one embodiment of the present invention; and FIG. 4 is a cross-sectional view of the inkjet printhead of FIG. 3 taken along line IV-IV'. 3 and 4, the inkjet printhead in this embodiment includes: a substrate 110 in which ink supply holes 112 are formed; a chamber layer 120 stacked on the substrate 110; and a nozzle layer 130 , the nozzle layer 130 is stacked on the chamber layer 120 . A plurality of ink chambers 122 and flow restrictors 124 are formed in the chamber layer 120 . A plurality of nozzles 132 are formed in the nozzle layer 130 . The ink path structure consists of the ink supply hole 112 , the flow restrictor...

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PUM

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Abstract

Provided are an ink path structure and an inkjet printhead including the same. The ink path structure includes: an ink chamber filled with ink to be ejected; a nozzle through which the ink in the ink chamber is ejected; an ink feed hole to supply ink to the ink chamber; and a restrictor connecting the ink chamber and the ink feed hole, wherein the restrictor includes a flow resistance control portion in which an ink path toward the ink feed hole is formed longer than an ink path toward the ink chamber in order to make the flow resistance toward the ink feed hole greater than the flow resistance toward the ink chamber.

Description

technical field [0001] The present invention relates to an inkjet printhead, and more particularly, to an inkjet printhead having an ink path structure capable of preventing ink backflow and improving energy efficiency. Background technique [0002] In general, an inkjet printer is a device that ejects a minute amount of ink droplets from an inkjet printhead onto a desired position on a recording paper to print a predetermined color image. Inkjet printers are classified into shuttle type inkjet printers that shuttle in a direction perpendicular to the direction in which a printing medium is conveyed to print images, and line printing type inkjet printers that have A page-wide array printhead that matches the width of the print media, this printer was developed for high-speed printing. In an array printhead, a plurality of inkjet printheads are arranged in a predetermined pattern. In a line printing type inkjet printer, an array print head is fixed while a printing medium i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/14B41J2/16
CPCB41J2/1404B41J2202/11B41J2002/14467B41J2002/14403B41J2002/14387
Inventor 李邦元金珉秀鞠健
Owner SAMSUNG ELECTRONICS CO LTD