发明授权
- 专利标题： Image forming apparatus employing a forgery discrimination pattern
- 专利标题（中）： 采用伪造鉴别模式的图像形成装置
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申请号： US10922954申请日： 2004-08-23
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公开(公告)号： US07710610B2公开(公告)日： 2010-05-04
- 发明人: Shinji Katagiri , Yoichiro Maebashi
- 申请人： Shinji Katagiri , Yoichiro Maebashi
- 申请人地址： JP 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： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2003-307184 20030829
- 主分类号： H04N1/40
- IPC分类号： H04N1/40 ; G03F3/08
摘要：
An image forming apparatus includes an image forming unit adapted to form images of a plurality of colors in a manner in which a predetermined pattern of a predetermined color is registered thereon and superimpose those images to form a color image, a controller configured to control the image forming unit so as to form a patch image of each color for density detection, and a detector configured to detect the density of each of the patch images. The controller controls the image forming unit so as to superimpose the predetermined pattern of the predetermined color upon the patch image of a predetermined color and not to superimpose the predetermined pattern of the predetermined color upon the patch images of the other colors.
公开/授权文献
- US20050046691A1 Image forming apparatus 公开/授权日：2005-03-03