Color image picture forming process and apparatus which improves

Details Color image picture forming process and apparatus which improves Color image picture forming process and apparatus which improves

1984-03-01

1987-07-21

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 75, 358 80, 358284, 358296, 346140R, G03F 308, H04N 140, H04N 146, G01D 1516

Patent

active

046822160

ABSTRACT:
Color image picture forming process and apparatus can provide a picture with smooth shadow portions without false contours. When a black component of a color picture data is smaller than a predetermined value, the black component is expressed by using the combination of cyan, magenta and yellow colorants. When the black component is larger than the predetermined value, it is expressed by alternately using the black colorant and the three colorant combination. In another embodiment, picture quality can be enhanced by using a black colorant having a higher density than the cyan, magenta and yellow colorants.

REFERENCES:
patent: 3109884 (1963-11-01), Zeyen
patent: 4217822 (1980-08-01), Milligan
patent: 4245258 (1981-01-01), Holladay
patent: 4412226 (1983-10-01), Yoshida
patent: 4413275 (1983-11-01), Horiuchi et al.
patent: 4446470 (1984-05-01), Sugiyama et al.
patent: 4560997 (1985-12-01), Sato et al.
patent: 4614967 (1986-09-01), Sayanagi
patent: 4631578 (1986-12-01), Sasaki et al.

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