发明名称 |
Printing plate processing apparatus and method of detecting the location of a register mark on a printing plate |
摘要 |
The present invention provides a method of detecting the locations of right and left register marks respectively burned onto right- and left-hand side portions of a printing plate based upon image data of images respectively captured within an image processing area with right and left vertical edges respectively extending in the Y-direction, and upper and lower horizontal edges extending in the X-direction. The method includes detecting the center coordinates in the X-direction of the right and left register marks based upon the image data obtained from substantially the entire portion of the image data processing area; detecting the center coordinate in the Y-direction of the right register mark based upon the image data obtained from a right-hand side portion of the image data processing area extending up to at least the center coordinate in the X-direction of the right register mark; and detecting the center coordinate in the Y-direction of the left register mark based upon the image data obtained from a left-hand side portion of the image data processing area extending up to at least the center coordinate in the X-direction of the left register mark.
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申请公布号 |
US6502511(B1) |
申请公布日期 |
2003.01.07 |
申请号 |
US20000552166 |
申请日期 |
2000.04.18 |
申请人 |
RYOBI LTD;KAMO CORPORATION |
发明人 |
DOUMOTO HIDEKI;WATANABE YUUKI |
分类号 |
B41F33/14;G01B11/00;G03F9/00;(IPC1-7):B41L3/02 |
主分类号 |
B41F33/14 |
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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