Opening detecting device of a copy document cover suitable for e

Details Opening detecting device of a copy document cover suitable for e Opening detecting device of a copy document cover suitable for e

1983-10-26

1985-09-10

Moses, R. L.

Photocopying

Including fiber optics

355 75, 340686, 340689, 340545, G03G 1500

Patent

active

045402698

ABSTRACT:
An electrophotographic copying machine having a device for detecting the opening and the closing of a document cover on a document table. The device contains a light emitting element, a light receiving element, a reflective sheet and a detection circuit. The reflective sheet reflects light from the light emitting element toward the light receiving element. The light receiving element is responsive to the reflected light for providing a detection signal. The detection circuit receives the detection signal to detect the opening and the closing of the document cover.

REFERENCES:
patent: 3697762 (1972-10-01), Kurtz
patent: 4074246 (1978-02-01), Conklin et al.
patent: 4391505 (1983-07-01), Silverberg

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