Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1984-12-21
1987-04-07
Masinick, Michael A.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 75, H04N 1387, H04N 146
Patent
active
046565051
ABSTRACT:
A method for color correction in the process for reproducing a picture in which color separation picture signals obtained by photoelectrically scanning an original picture are converted into picture signals which correspond to four printing color inks including a black ink therein to produce respective reproduction pictures for plate making corresponding to each of the color inks. A picture signal which corresponds to a black ink is produced according to gray color components obtained from B, G and R signals of the original picture, and according to chromatic color components obtained by subtracting neutral color components from said B, G and R signals. Color separation picture signals corresponding to other color inks, and deficiency in reproduction density of the black ink to be used in a black print is corrected by said other three color inks.
REFERENCES:
patent: 3324235 (1967-06-01), Kyte
patent: 4060829 (1977-11-01), Sakamoto
patent: 4402015 (1983-08-01), Yamada
patent: 4551751 (1985-11-01), Jung
patent: 4590515 (1986-05-01), Wellendorf
Atoji Hitomi
Kashiwabara Katsuaki
Yamada Mitsuhiko
Bauer Robert Michael
Dainippon Screen Mfg. Co,. Ltd.
Masinick Michael A.
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