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    • 5. 发明授权
    • Printing plate processing apparatus and method of detecting the location of a register mark on a printing plate
    • 印版处理装置和检测印版上对准标记位置的方法
    • US06502511B1
    • 2003-01-07
    • US09552166
    • 2000-04-18
    • Hideki DoumotoYuuki Watanabe
    • Hideki DoumotoYuuki Watanabe
    • B41L302
    • G03F9/00Y10S101/36
    • 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.
    • 本发明提供了一种基于分别在具有右和左垂直边缘的图像处理区域中捕获的图像的图像数据来检测分别刻在印版的右侧和左侧部分上的左右对准标记的位置的方法 分别在Y方向延伸,以及在X方向上延伸的上下水平边缘。 该方法包括基于从图像数据处理区域的大部分整体获得的图像数据检测左右对准标记的X方向上的中心坐标; 基于从直到至少延伸到右寄存器的X方向的中心坐标的图像数据处理区域的右侧部分获得的图像数据来检测右对准标记的Y方向上的中心坐标 标记; 并且基于从左侧的X方向上的至少中心坐标延伸的图像数据处理区域的左侧部分获得的图像数据检测左对齐标记的Y方向上的中心坐标 注册标记。