Electrophotographic copying machine

Details Electrophotographic copying machine Electrophotographic copying machine

1981-01-26

1982-11-02

Prescott, A. C.

Photocopying

Including fiber optics

355 14R, 355 25, 355 75, G03G 1500

Patent

active

043570950

ABSTRACT:
A copying machine includes a shutter mechanism comprising a light shield member which intercepts the incidence of extraneous light onto a photosensitive drum through an exposure window, and a detecting member which is operated by a cover which forms a conveyor unit for a sheet-shaped original or by a book carrier on which a thick original is placed. A movement of the light shield member into or out of an exposure light path is controlled by the operation of the detecting member.

REFERENCES:
patent: 3588244 (1971-06-01), Murgas et al.
patent: 3597074 (1971-08-01), Murgas et al.
patent: 3659937 (1972-05-01), Yamanoi
patent: 3726589 (1973-04-01), Difulvio et al.
patent: 3807856 (1974-04-01), Rodriguez
patent: 3825338 (1974-07-01), Kolibas
patent: 3953124 (1976-04-01), Kolibas
patent: 3997265 (1976-12-01), Menon et al.
patent: 4035077 (1977-07-01), Vercoulen
patent: 4188028 (1980-02-01), Miciukiewicz

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