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Method of detecting missing nozzle and ink jet print head using the same

An inkjet print head and nozzle technology, applied in printing and other directions, can solve the problems of not measuring the individual temperature of the nozzle and not being able to accurately detect it.

Inactive Publication Date: 2008-12-31
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the inkjet recording head disclosed here detects whether the ink is ejected well by only measuring the average temperature of the recording head, without measuring the individual temperature of each nozzle.
Therefore, individual faulty nozzles that produce blank lines cannot be accurately detected

Method used

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  • Method of detecting missing nozzle and ink jet print head using the same
  • Method of detecting missing nozzle and ink jet print head using the same
  • Method of detecting missing nozzle and ink jet print head using the same

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Embodiment Construction

[0035] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings, like reference numerals referring to like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0036] figure 1 is a plan view schematically showing an inkjet print head according to an embodiment of the present invention, figure 2 is along figure 1 A cross-sectional view of the I-I line, and image 3 is shown based on figure 1 A partial cross-sectional perspective view of an inkjet printhead of an embodiment.

[0037] The inkjet printhead of the present embodiment is preferably an electrothermal type inkjet printhead that generates bubbles in ink using a heat source and ejects ink droplets by the expansion force of the bubbles.

[0038] like Figure 1-3 As shown, an embodiment of an inkjet printhead may include a substrate 10 on which a heate...

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PUM

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Abstract

The invention relates to a method of detecting a missing nozzle and an ink jet print head using the same, that can detect a missing nozzle immediately with a simple process when the missing nozzle is generated. The method of detecting a missing nozzle used in an ink jet print head provided with plural chambers in which an ink is filled, plural heaters corresponding to the chambers, and plural nozzles corresponding to the heaters, can include detecting a temperature of each of the nozzles, and when the detected temperature deviates from a predetermined temperature range, determining that the nozzle is a missing nozzle.

Description

technical field [0001] The present invention relates to a method of detecting a malfunctioning nozzle and an inkjet print head using the method, and more particularly, to a method of detecting a malfunctioning nozzle and an inkjet printing head using the method, which can be set by measuring The temperature of each nozzle in the inkjet printhead is used to detect faulty nozzles. Background technique [0002] An inkjet printhead is a device that forms an image by ejecting ink droplets onto a desired location on a print medium. [0003] Inkjet print heads are mainly classified into electrothermal type and piezoelectric type according to the ink droplet ejection mechanism. The electrothermal type printhead generates air bubbles in ink by using a heat source, and ejects ink droplets by the expansion force of the air bubbles. [0004] The electrothermal printhead generally includes: a substrate composed of a silicon wafer, an ink supply hole formed on the substrate to supply in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/165B41J2/14B41J2/05
CPCB41J2/0451B41J2/04563B41J2/0458B41J2/14153B41J2002/14354
Inventor 闵在植张宰荣白梧铉
Owner SAMSUNG ELECTRONICS CO LTD