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1. 发明授权

US4685139A Inspecting device for print 失效
标题翻译：检查设备进行打印
公开(公告)号：US4685139A
公开(公告)日：1987-08-04
申请号：US712151
申请日：1985-03-15
申请人： Toshiro Masuda , Kouichi Ishizuka , Toshiji Fujita , Yoshio Kinoshita
发明人： Toshiro Masuda , Kouichi Ishizuka , Toshiji Fujita , Yoshio Kinoshita
IPC分类号： B41F33/00 , G01N21/956 , G07D7/20
CPC分类号： G07D7/20 , B41F33/0036 , G01N21/956
摘要： The present invention relates to an inspecting device for a print which can scan the entire print pattern of a printed sheet by an optical detecting device, detects the image information of the print pattern at every pixel, calculates the difference between the detected image information with reference information, delays the differential signal in several pixels in the scanning direction of the optical detecting device, calculates the difference between the differential signal and the delayed differential signal, sets a threshold level to the twice differential signal produced from the result, and judges the production of a printing defect when the twice differential signal exceeds the threshold level, thereby accurately detecting the printing defect even when the entire variation in the color density occurs on the printed sheet.
摘要翻译：本发明涉及一种能够通过光学检测装置对打印片材的整个打印图案进行扫描的打印检查装置，检测每个像素处的打印图案的图像信息，计算检测到的图像信息之间的差异信息延迟光检测装置的扫描方向上的几个像素的差分信号，计算差分信号和延迟的差分信号之间的差，将阈值电平设置为由结果产生的两倍差分信号，并且判断生成当两倍差分信号超过阈值水平时，即使在印刷纸上出现色彩浓度的全部变化时也能准确地检测印刷缺陷。

2. 发明授权

US4553215A Gravure screen and method of making the same 失效
标题翻译：凹版屏幕和制作相同的方法
公开(公告)号：US4553215A
公开(公告)日：1985-11-12
申请号：US296179
申请日：1981-08-25
申请人： Toshiro Masuda , Yoichi Tanaka
发明人： Toshiro Masuda , Yoichi Tanaka
IPC分类号： G03F5/12 , G03F5/20 , G06F15/20 , G03F5/00
CPC分类号： G03F5/20 , G03F5/12
摘要： The present invention relates to a gravure screen and method of making the same and particularly to a gravure screen and method of making the same in which in the case that a gravure printing plate is made using a planographic or relief half-tone positive, the gravure screen is combined with the half-tone positive.Transparent or opaque lines of the gravure screen in accordance with the present invention are formed by irregular patterns, and the presence of this irregularity does not cause to form a moire pattern even if the gravure screen is combined with the planographic or relief half-tone positive formed by regularly aligned dot patterns.It is therefore possible to combine the gravure screen of the present invention with a half-tone positive of any screen angle, and a gravure printing plate can be made by only one gravure screen even in a plurality of half-tone positives having different angles.In addition, the gravure screen of the present invention can be used in the conventional gravure process, and even if a design having regular patterns is present in an original, the moire does not occur between the design and the gravure screen.
摘要翻译：凹版印刷机及其制造方法技术领域本发明涉及一种凹版印刷机及其制造方法，特别涉及一种凹版印刷机及其制造方法，其中在使用平版印刷或浮雕半色调制作凹版印刷版的情况下，屏幕与半色调正相结合。根据本发明的凹版印刷版的透明或不透明线由不规则图案形成，并且即使将凹版印刷机与平版印刷或浮雕半色调正相结合，也不会形成这种凹凸图案由定期对齐的点阵图形形成。因此，可以将本发明的凹版屏幕与任何屏幕角度的半色调正相结合，并且即使在具有不同角度的多个半色调正面中，也可以仅通过一个凹版印刷机制造凹版印刷版。此外，本发明的凹版印刷版可以用于传统的凹版印刷工艺，即使在原稿中存在规则图案的设计，在设计和凹版印刷之间也不会发生莫尔条纹。

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