Method and apparatus for color removal in a picture forming appa

Details Method and apparatus for color removal in a picture forming appa Method and apparatus for color removal in a picture forming appa

1989-10-27

1992-05-12

Wieder, Kenneth A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 80, H04N 146

Patent

active

051132486

ABSTRACT:
In a picture forming apparatus for reproducing original images, an image processing device separates a signal corresponding to an original image into a plurality of separated color signals, an image converter converts the color signals into recording signals wherein each of the recording signals corresponds to a different color of coloring material used by the picture forming apparatus to reproduce the original image, a determining circuit determines the minimum value of the recording signals, and a color removal circuit performs under color removal on each of the recording signals in accordance with the determined minimum value.

REFERENCES:
patent: 4335398 (1982-06-01), Yamada
patent: 4481532 (1984-11-01), Clark et al.
patent: 4656505 (1987-04-01), Yamada et al.
patent: 4700399 (1987-10-01), Yoshida
patent: 4701790 (1987-10-01), Yamada
patent: 4763190 (1988-08-01), Froelich
patent: 4774567 (1988-09-01), Stansfield et al.
patent: 4878125 (1989-10-01), Katayama et al.
patent: 4887150 (1989-12-01), Chiba et al.

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