发明名称 |
Ink-jet printer nozzle defect detection method and device |
摘要 |
A method and device designed to detect any defects in ink-jet nozzles such as blinding, satellite of ink, ink drop mislocation and uneven printing, wherein a test pattern 15 is printed on a test recording medium 3 with a printing head 4 and the said test pattern is scanned by sensor means 1 to capture an image of a column of ink drops 16 in the test pattern as a group 18, the image being processed to determine the average area of the ink drops, their X direction edge positions or Y direction center-to-center distances for comparison with specified criteria to judge any failure in the ink jetting on a group basis. <IMAGE> |
申请公布号 |
EP0988990(A2) |
申请公布日期 |
2000.03.29 |
申请号 |
EP19990307507 |
申请日期 |
1999.09.22 |
申请人 |
SEIREN CO., LTD. |
发明人 |
SHIMADA, RYOUICHI;FUKUOKA, MASATOSHI;TAKEZAWA, SYOUJI |
分类号 |
B41J2/01;B41J2/125;B41J2/165;B41J29/46 |
主分类号 |
B41J2/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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