Antijamming safety device for copying machine

Details Antijamming safety device for copying machine Antijamming safety device for copying machine

1974-12-12

1976-12-28

Hix, L. T.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

271259, 340259, G03G 1500

Patent

active

039998517

ABSTRACT:
There is disclosed a safety device in a copying machine for detecting jamming of copying sheet materials to remove power only from the machine elements which might cause damage during subsequent operation of the machine. The copying machine is provided with a jam detector, a jam indicator to let a machine operator know of an occurrence of jamming, a disconnecting unit for operation in response to a signal from the jam detector to remove power from heaters, high voltage circuits, and other critical elements in the machine, and a jam indicator activating unit for operation in response to a signal from the disconnecting unit for activating the jam indicator after the lapse of a certain fixed period of time after receiving the signal.

REFERENCES:
patent: 3655283 (1972-04-01), Margulis et al.
patent: 3693969 (1972-09-01), Sakamaki et al.
patent: 3734604 (1973-05-01), Szostak et al.
patent: 3804512 (1974-04-01), Komori et al.

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