Electrophotographic color proofing apparatus and method

Photocopying – Including fiber optics

Patent

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Details

355 3R, 355 40, 355 71, 355 77, 430 30, 430 43, G03G 1501, G03G 1301

Patent

active

047084596

ABSTRACT:
Electrophotographic color proof generating apparatus includes a charger station, an exposure station, and a development station. Starting with color half-tone separations of artwork, the apparatus, using a unique method, electronically controls the exposure and potentials at the charger and development stations to generate a proof. The apparatus is designed to generate proofs which match the dot gain or loss and density of press sheets printed by a great variety of commercial presses starting with the same separations as are used to form the proofs. The separations are then modified until the apparatus generates a proof which is an acceptable reproduction of the artwork. The modified separations are then used to generate a press sheet on the commercial press which will be an acceptable reproduction of the artwork.

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patent: 4519695 (1985-05-01), Murai et al.
patent: 4521097 (1985-06-01), Kuehnle et al.
Journal of Photo Science, vol. 3; 1955, pp. 112-116.

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