Color copying machine

Details Color copying machine Color copying machine

1986-05-22

1988-04-05

Prescott, A. C.

Photocopying

Including fiber optics

355 3R, 355 14R, 355 14CH, G03G 1500, G03G 1501

Patent

active

047362235

ABSTRACT:
A color copying machine of the invention has a halogen lamp for emitting light to an original, a photosensitive drum on a surface of which is formed an electrostatic latent image by the light reflected from the original, a transfer section which color-separates the image and transfers it on a paper sheet, a potentiometer probe which detects the surface potential of the photosensitive drum, a microcomputer which makes the measured surface potential to converge to a reference value determined for each color, and a fine tuning board for allowing fine control of the converged value. A copy image of excellent color balance is obtained over a long period of time irrespective of degradation in the units of the machine or variations in the quality of toners. A particular color of the copy image may be emphasized or deemphasized as desired.

REFERENCES:
patent: 3815988 (1974-06-01), McVeigh
patent: 3852668 (1974-12-01), Hardenbrook
patent: 3944354 (1976-03-01), Benwood
patent: 4213693 (1980-07-01), Imai
patent: 4261660 (1981-04-01), Suzuki

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