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Method for detecting fault nozzle and ink jet print head using same

An inkjet print head and fault detection technology, which is applied in printing and other directions, can solve the problems of not measuring the individual temperature of the ink cavity and not being able to detect accurately

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 disclosed inkjet recording head detects whether the ink is ejected well by only measuring the average temperature of the recording head, without measuring the individual temperatures of the individual ink chambers.
Therefore, individual faulty nozzles that produce blank lines cannot be accurately detected

Method used

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  • Method for detecting fault nozzle and ink jet print head using same
  • Method for detecting fault nozzle and ink jet print head using same
  • Method for detecting fault nozzle and ink jet print head using same

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Embodiment Construction

[0042] Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are shown in the drawings, and the same reference numerals always denote the same elements. The embodiments are described below in order to explain the present invention by referring to the figures.

[0043] figure 1 Is a plan view schematically showing the structure of an inkjet print head according to an exemplary embodiment of the present invention, figure 2 Is showing along figure 1 Sectional view of line I-I, image 3 It is a partially cutaway perspective view schematically showing the structure of a nozzle module of an inkjet print head according to an exemplary embodiment of the present invention.

[0044] figure 1 The inkjet print head of the embodiment is preferably an electrothermal inkjet print head, which can use a heat source to generate bubbles in the ink, and eject ink droplets by the expansion force of the bubbles.

[0045] Such as Figure 1-3 A...

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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 can detect a missing nozzle (31) immediately with a simple process when the missing nozzle is generated. One method of detecting a missing nozzle used in an ink jet print head provided with plural chambers (21a), plural heaters (11) corresponding to the chambers, and plural nozzles corresponding to the heaters can include detecting a temperature of each of the chambers, and when the detected temperature deviates from a predetermined temperature range, determining that a nozzle corresponding to the chamber is a missing nozzle.

Description

Technical field [0001] The present invention relates to an imaging device, a method for detecting a malfunctioning nozzle, and an inkjet print head using the method, and more specifically, to a method for detecting a malfunctioning nozzle and an inkjet print head using the method, which can pass Measure the temperature of each nozzle set in the inkjet print head to detect malfunctioning nozzles. Background technique [0002] An inkjet print head is a device that forms an image by ejecting ink droplets to a desired position on a printing medium. [0003] Inkjet print heads are roughly classified into electrothermal type and piezoelectric type according to the ink drop ejection mechanism. The electrothermal type print head uses a heat source to generate bubbles in the ink, and eject ink droplets by the expansion force of the bubbles. [0004] The electrothermal type print head may generally include: a substrate composed of a silicon wafer, an ink supply hole formed on the substrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/165B41J2/14
CPCB41J2/0451B41J2/04563B41J2/0458B41J2/14129B41J2/14153B41J2002/14354
Inventor 闵在植
Owner SAMSUNG ELECTRONICS CO LTD