Color image copying apparatus

Details Color image copying apparatus Color image copying apparatus

1985-07-09

1987-04-28

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 75, H04N 146

Patent

active

046618430

ABSTRACT:
A color copying apparatus includes a color image sensor, an image information signal processing unit, and a color printer. The apparatus converts the three color component signals from the color image sensor into a luminance signal component and color difference signal components. At least one of the luminance signal component and the color difference signal components is subject to a nonlinear conversion. For density conversion between an input image and an output image, the luminance signal component is subject to a nonlinear conversion in a nonlinear conversion circuit.

REFERENCES:
patent: 4393398 (1983-07-01), Horiguchi
patent: 4534059 (1985-08-01), Yamada
patent: 4535413 (1985-08-01), Shiota
patent: 4597006 (1986-06-01), Orsburn

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