发明授权
- 专利标题: Color image forming apparatus
- 专利标题(中): 彩色图像形成装置
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申请号: US989661申请日: 1997-12-12
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公开(公告)号: US6118557A公开(公告)日: 2000-09-12
- 发明人: Mitsugu Sugiyama , Eiichi Sasaki , Tadashi Shinohara , Kouichi Irie , Yutaka Shio
- 申请人: Mitsugu Sugiyama , Eiichi Sasaki , Tadashi Shinohara , Kouichi Irie , Yutaka Shio
- 申请人地址: JPX Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX6-303266 19941207
- 主分类号: G03G15/00
- IPC分类号: G03G15/00 ; G03G15/01 ; G03G15/04 ; G03G21/00 ; G03G21/14 ; H04N1/40 ; H04N1/407 ; H04N1/60 ; G03B27/80 ; H04N1/21 ; H04N1/46
摘要:
In a color image forming apparatus, a test pattern is formed by a color toner and provided with multiple tones by a dither method. The toner density of the test pattern is accurately read by a simple structure and faithfully corresponds to the actual toner density.
公开/授权文献
- US5371768A Swirl type spacer for boiling water reactor fuel 公开/授权日:1994-12-06