Obtaining color balance for optical copiers by setting the expos

Details Obtaining color balance for optical copiers by setting the expos Obtaining color balance for optical copiers by setting the expos

1990-10-29

1991-11-12

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355219, 355228, 355239, 355327, G03G 1501

Patent

active

050651994

ABSTRACT:
An electrostatographic color copier includes a photoconductor imaging member, means for variably charging the imaging member, and means for imagewise projection exposing the charged photoconductor imaging member with a series of color separation light images such that the focal plane of the projection images changes from one color separation to another to cause an out-of-focus condition at the photoconductor imaging member, the intensity of the exposure being adjustable. Controller means are provided for adjusting either the charge placed on the photoconductor imaging member or the exposure intensity from one color separation to another to compensate for differences in focus between the color separations.

REFERENCES:
patent: 4063810 (1977-12-01), Mailloux
patent: 4106870 (1978-08-01), Kondo et al.
patent: 4825252 (1989-04-01), Suzuki et al.
patent: 4937616 (1990-06-01), Maeda et al.

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