Exposure device of an electrographic copying apparatus

Details Exposure device of an electrographic copying apparatus Exposure device of an electrographic copying apparatus

1979-04-23

1981-10-27

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3R, 355 69, 355 71, G03G 1500

Patent

active

042970245

ABSTRACT:
An exposure device of an electrographic copying apparatus including at least one heat generative exposure lamp for exposing a photosensitive paper corresponding to an original to be copied. A paper detector detects the photosensitive paper at an inlet of the apparatus. A rotatable cam is actuated by a signal from the paper detector and, in turn, actuates a switching apparatus in a predetermined sequence during one revolution thereof. A relay is actuated by one of said switches so as to be self-latched for a predetermined time, to activate the exposure lamp for the predetermined time.

REFERENCES:
patent: 3606535 (1971-09-01), Koizumi
patent: 3771867 (1973-11-01), Moser
patent: 3779640 (1973-12-01), Kidd
patent: 3948586 (1976-04-01), Komori et al.
patent: 4027965 (1977-06-01), Mikasa et al.
patent: 4048666 (1977-09-01), Irie et al.
patent: 4140385 (1979-02-01), Shaw et al.
patent: 4176943 (1979-12-01), Hasebe

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