Color image processing apparatus for substituting a black pigmen

Details Color image processing apparatus for substituting a black pigmen Color image processing apparatus for substituting a black pigmen

1990-10-11

1992-11-03

Brinich, Stephen

Facsimile and static presentation processing

Static presentation processing

Attribute control

G03F 308

Patent

active

051610108

ABSTRACT:
An apparatus which determines the intensity of signals generated by a raster input scanner. The signals are inputted to a delay circuit and to a gray detector. The signals generated from the delay circuit and the gray detector are subsequently sent to a logic circuit which determines whether to output a gray signal or a non-gray signal to a raster output scanner used to expose a charged photoconductive surface to record a latent image thereon.

REFERENCES:
patent: 4642681 (1987-02-01), Ikeda
patent: 4682216 (1987-07-01), Sasaki
patent: 4980757 (1990-12-01), Nishigaki
patent: 4985759 (1991-01-01), Ito

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