Control unit for a copying machine including automatic shutdown

Details Control unit for a copying machine including automatic shutdown Control unit for a copying machine including automatic shutdown

1987-09-04

1990-12-04

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355208, 355271, G03G 2100

Patent

active

049757415

ABSTRACT:
A control unit of a copying machine, including an optical scanning mechanism for scanning a manuscript surface having a picture image; a photosensitive substance rotating synchronously with scanning of the optical scanning mechanism, on which an electrostatic latent image corresponding to the picture image is formed; developing apparatus for developing the electrostatic latent image; first reference signal generator for generating a first reference signal representing a rotational reference position of the photosensitive substance rotated synchronously with the rotation of the photosensitive substance; first controller for controlling a rotational position of the photosensitive substance according to the reference signal generated from the reference signal generator; transfer apparatus for transferring an image developed through the developing apparatus to a recording paper; second reference signal generator for generating a second reference signal representing a reference for forming an initiation position of the electrostatic latent image; third reference signal generator for generating a third reference signal representing a reference for a transfer initiation position sychronously with the transfer operation of the transfer apparatus; and timing signal generator for generating timing signals representing a grip timing for the recording paper synchronously with the transfer operation of the transfer apparatus.

REFERENCES:
patent: 3620616 (1971-11-01), Davidson et al.
patent: 4165170 (1979-08-01), Donohue et al.
patent: 4275958 (1981-06-01), Tachika et al.
patent: 4436410 (1984-03-01), Komiya
patent: 4769673 (1988-09-01), Tomosada et al.

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