Counting system for use in a copying machine

Details Counting system for use in a copying machine Counting system for use in a copying machine

1987-12-23

1990-01-30

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355200, 355245, G03G 1501, G03G 2100

Patent

active

048976970

ABSTRACT:
A copying machine includes first and second developing units, each of which contains different color developer. The copy machine is capable of developing an electrostatic latent image on the surface of a photoconductor through individual or successive operation of the first and second developing units. An arrangement is provided for counting the number of copying operations that each developing unit is subjected to during a single scan of the scanning device. The arrangement increases the count values associated with the first developer unit when the first developer unit is operated individually, and increases the count value associated with the second developer unit when the second developer unit is operated individually. Further, the arrangement increases the count value associated with the first and second developer units when both developer units are operated together.

REFERENCES:
patent: 4587536 (1986-05-01), Saito et al.
patent: 4634258 (1987-01-01), Tanaka et al.

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