Extension of tri-level xerography to black plus 2 colors

Details Extension of tri-level xerography to black plus 2 colors Extension of tri-level xerography to black plus 2 colors

1989-06-29

1991-09-17

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

430 42, G03G 1501

Patent

active

050499491

ABSTRACT:
Highlight color printing apparatus and method for forming one black and two color images. A tri-level image containing CAD and DAD image areas and a background area is formed. A second DAD image is formed by discharging the background area forming part of the tri-level image.

REFERENCES:
patent: 4078929 (1978-03-01), Sundlach
patent: 4403848 (1983-09-01), Snelling
patent: 4562130 (1985-12-01), Oka
patent: 4731634 (1988-03-01), Stark
patent: 4771314 (1988-09-01), Parker et al.
patent: 4847655 (1989-07-01), Parker et al.
patent: 4868611 (1989-09-01), Germain
patent: 4920024 (1990-04-01), Williams

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