Photocopying – Contact printing – Light boxes
Patent
1991-02-26
1992-05-05
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355214, 355219, 430103, G03G 2100
Patent
active
051112353
ABSTRACT:
A method of operating an electrographic printing apparatus which employs a reversal development system with a two components developer wherein the bias voltage and the surface voltage are varied in synchronism with each other.
REFERENCES:
patent: 3788739 (1974-01-01), Coriale
patent: 4678317 (1987-07-01), Grossinger
patent: 4755850 (1988-07-01), Suzuki et al.
Doi Koji
Kikuchi Yasuo
Ogawa Toshitaka
Onose Tsukasa
Takahashi Kunitomo
Barlow Jr. J. E.
Grimley A. T.
Hitachi Koki Co,. Ltd.
Keller Michael L.
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