Alarm for an electrophotographic printing machine

Details Alarm for an electrophotographic printing machine Alarm for an electrophotographic printing machine

1974-11-08

1976-03-23

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Detailed holder for original

194 9T, 340280, G03B 2762

Patent

active

039457281

ABSTRACT:
An apparatus in which the failure to remove an original document from a housing after the elapse of a preselected duration of time is detected.

REFERENCES:
patent: 1161683 (1915-11-01), Hutter
patent: 3378831 (1968-04-01), Metcalf
patent: 3380064 (1968-04-01), Norris et al.
patent: 3765759 (1973-10-01), Yamada

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