G - Physics – 03 – G
Patent
G - Physics
03
G
314/7, 178/3.3
G03G 15/01 (2006.01) H04N 1/407 (2006.01) H04N 1/50 (2006.01) H04N 1/52 (2006.01) H04N 1/60 (2006.01)
Patent
CA 1242239
ABSTRACT OF THE DISCLOSURE A color electrophotographic copying process utilizing the Carlson process. A colored original to be copied is color-separated and read by a solid-state image pickup device. Color compensation or gradation compensation is carried out on the basis of the data read by the solid-state image pickup device. When the color compensation is effected, amounts of masking are deteremined on the basis of the data read by the solid state image pickup device, and the color-separated latent images are partially erased in an area-modulating manner dependent on the determined amounts of masking with an eraser comprising a light-emitting dot array. When the gradation compensation is effected, the latent images are partially erased with the eraser in an area-modulating manner dependent on the determined amounts of masking, or an appropriate gradation reproduction curve is selected on the basis of the data read by the solid-state image pickup device.
489638
Adachi Tsukasa
Furuta Hideya
Ikeda Itsuo
Sakai Katsuo
Sakai Yoshihiro
Borden Ladner Gervais Llp
Ricoh Company Limited
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