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    • 13. 发明公开
    • System and method for detecting defective ink jet nozzles
    • 系统和Verfahren zum Detektieren von defektenTintenstrahldüsen
    • EP1798039A1
    • 2007-06-20
    • EP06025359.8
    • 2006-12-07
    • Pitney Bowes, Inc.
    • Reichelsheimer, JayWilk, David B.MacDonald, George M.
    • B41J2/165G03B17/00
    • B41J2/16579G07B2017/00556
    • A system for detecting failures in a sensitive region of an inkjet printhead is described. The system includes an inkjet printer that uses a printhead (12) for printing an image (18) on a substrate (20). The image (18) has a sensitive portion that is more sensitive to printing failures than the rest of the image (18). The printhead (12) includes a first portion that prints an area of the substrate corresponding to the sensitive portion of the image. A radiant energy source (24) is used with a photodetector (22) located downstream from the printhead (12) to detect background florescence from the substrate (20) in the area of the substrate corresponding to the sensitive portion of the image (18) that should be quenched by printing of the image. If background florescence is detected, a failure is indicated.
    • 描述了用于检测喷墨打印头的敏感区域中的故障的系统。 该系统包括使用打印头(12)在基板(20)上印刷图像(18)的喷墨打印机。 图像(18)具有比图像(18)的其余部分对打印故障更敏感的敏感部分。 打印头(12)包括第一部分,其打印与图像的敏感部分对应的基板的区域。 辐射能源(24)与位于打印头(12)下游的光电检测器(22)一起使用,以在对应于图像(18)的敏感部分的基板的区域中检测来自基板(20)的背景荧光, 应该通过打印图像来淬火。 如果检测到背景荧光,则显示失败。