发明授权
US5697012A Method and apparatus for color image formation with gradation control
capability
失效
用灰度控制能力进行彩色图像形成的方法和装置
- 专利标题： Method and apparatus for color image formation with gradation control capability
- 专利标题（中）： 用灰度控制能力进行彩色图像形成的方法和装置
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申请号： US428792申请日： 1995-04-24
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公开(公告)号： US5697012A公开(公告)日： 1997-12-09
- 发明人: Nobuatsu Sasanuma , Koji Amemiya , Tatsuo Takeuchi , Hisashi Fukushima , Haruhiko Moriguchi , Takao Ogata
- 申请人： Nobuatsu Sasanuma , Koji Amemiya , Tatsuo Takeuchi , Hisashi Fukushima , Haruhiko Moriguchi , Takao Ogata
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-028765 19910222
- 主分类号： G03G15/00
- IPC分类号： G03G15/00 ; G03G15/01 ; G03G15/02 ; G03G15/04 ; G03G15/043 ; G03G15/08 ; H04N1/23 ; H04N1/40 ; H04N1/407
摘要：
A color image forming method and apparatus in which toner patterns, formed by toners of different colors, on an image bearing member, can be detected by a single sensor. Near-infrared light is emitted from an LED at each formation of a single-colored pattern on the photosensitive drum and the amount of near-infrared light reflected from the drum is detected by the sensor, for the purpose of effecting gradation control.
公开/授权文献
- US4985800A Lighting protection apparatus for RF equipment and the like 公开/授权日：1991-01-15