发明名称 |
Color image forming apparatus and method for controlling color image forming apparatus |
摘要 |
<p>The invention makes it possible to realize controlling of the density-gradation characteristics that is superior in that gray balance of tertiary color is taken into account as compared to conventional control of the density-gradation characteristics that uses only density sensor, in an individual color image forming apparatus. The density of an unfixed patch is detected before a fixing operation. The color of a fixed patch formed on a transferring material is also detected. Calibration tables for cyan, magenta, yellow and black for converting gradients in given image information into gradients matched with density-gradation characteristics of the color image forming apparatus are corrected based on results of the above-mentioned detections, thereby controlling density-gradation characteristics.</p> |
申请公布号 |
EP1298500(A3) |
申请公布日期 |
2010.11.10 |
申请号 |
EP20020021542 |
申请日期 |
2002.09.26 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
TEZUKA, HIROKI;YAMAZAKI, HIROYUKI;MAEBASHI, YOICHIRO |
分类号 |
G03G15/01;G03G15/00;H04N1/60 |
主分类号 |
G03G15/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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