Device for illuminating an original document

Details Device for illuminating an original document Device for illuminating an original document

1987-11-04

1988-11-01

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 75, 355120, G03B 2772

Patent

active

047823690

ABSTRACT:
A flash lamp type device for illuminating an original document insures safety operation by alerting an operator, by an alarm, display and others, to the breakage of a glass platen and/or the open position of a protective cover which may occur while the voltage charge in a capacitor is higher than any desired voltage. A trigger circuit associated with a trigger wire is disenabled by sensing the breakage of a glass platen and/or the open position of the protective cover.

REFERENCES:
patent: 4089602 (1978-05-01), Noguchi et al.
patent: 4111541 (1978-09-01), Townsend
patent: 4146822 (1979-03-01), Eppe et al.
patent: 4183654 (1980-01-01), Waschk et al.
patent: 4272183 (1981-06-01), Maese et al.
patent: 4290692 (1981-09-01), Svatek
patent: 4390267 (1983-06-01), Minor
patent: 4711569 (1987-12-01), Nishimori et al.

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