Exposure control device for a copier

Details Exposure control device for a copier Exposure control device for a copier

1987-03-04

1988-07-05

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14R, G03G 1500

Patent

active

047558520

ABSTRACT:
An exposure control device for a copier includes a microcomputer which automatically varies the exposure sequentially in a stepwise fashion and the copier performs copying operation in correspondence with the timing of this variation in exposure. The user has only to press a print button once to obtain a copy or copies with exposure changed in stepwise fashion.

REFERENCES:
patent: 4200391 (1980-04-01), Sakamoto et al.
patent: 4239374 (1980-12-01), Tatsumi et al.
patent: 4306804 (1981-12-01), Sakamoto et al.
patent: 4624548 (1986-11-01), Takayanagi
patent: 4640603 (1987-02-01), Honma
patent: 4647184 (1987-03-01), Russell et al.
patent: 4659209 (1987-04-01), Yamada

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