发明授权
- 专利标题： Image density control apparatus for copying machines
- 专利标题（中）： 用于复印机的图像浓度控制装置
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申请号： US630721申请日： 1984-07-13
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公开(公告)号： US4572653A公开(公告)日： 1986-02-25
- 发明人: Masazumi Ito , Yutaka Irie , Yoshikazu Ikenoue , Minoru Nakamura
- 申请人： Masazumi Ito , Yutaka Irie , Yoshikazu Ikenoue , Minoru Nakamura
- 申请人地址： JPX Osaka
- 专利权人： Minolta Camera Kabushiki Kaisha
- 当前专利权人： Minolta Camera Kabushiki Kaisha
- 当前专利权人地址： JPX Osaka
- 优先权： JPX58-130135 19830715
- 主分类号： G03B27/34
- IPC分类号： G03B27/34 ; G03B27/72 ; G03G15/00 ; G03G15/047 ; G03G21/00
摘要：
There is disclosed an image density control apparatus for copying machines in which an area of a pattern image that is formed by projecting a reference pattern through an optical system is limited to a constant area irrespective of the copy magnification. Then the pattern image is developed and its toner density is detected to serve for controlling the image density. Accordingly, the image density is controlled with accuracy, irrespective of the copy magnification.
公开/授权文献
- US5891136A Expandable-collapsible mesh electrode structures 公开/授权日：1999-04-06
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