发明公开
- 专利标题： Image forming apparatus
- 专利标题（中）： 成像设备
-
申请号： EP90309412.6申请日： 1990-08-29
-
公开(公告)号： EP0415722A3公开(公告)日： 1992-04-08
- 发明人: Mizoguchi, Yoshito, c/o Canon Kabushiki Kaisha
- 申请人： CANON KABUSHIKI KAISHA
- 申请人地址： 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
- 专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人地址： 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
- 代理机构： Beresford, Keith Denis Lewis
- 优先权： JP225365/89 19890831
- 主分类号： H04N1/40
- IPC分类号： H04N1/40
摘要：
The present invention provides an image forming apparatus for reproducing an image from an original, wherein a character portion and an intermediate contrast portion of an original is discriminated, different density converting tables are used to the character portion and the intermediate contrast portion. When the original includes both the character portion and the intermediate contrast portion, the density converting table for character portion is applied to the character portion and the density converting table for intermediate contrast portion is applied to the intermediate contrast portion to form the image.
公开/授权文献
- EP0415722B1 Image forming apparatus 公开/授权日：1996-12-04
信息查询
