Manuscript-reading apparatus with jam detection sensors

Details Manuscript-reading apparatus with jam detection sensors Manuscript-reading apparatus with jam detection sensors

1991-08-27

1993-11-16

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355316, 271259, G03G 1500

Patent

active

052628230

ABSTRACT:
An identifying system of a manuscript-reading device, receives signals from a pair of sensors disposed upstream of an optical system on the manuscript conveying path while conveying the manuscript for reading an image. In the event that the downstream side sensor remains OFF a predetermined time after the upstream side sensor turns ON or the downstream sensor remains ON a predetermined time after the upstream sensor turns OFF, an identifying system then identifies the presence of a jammed manuscript. Only when both sensors turn OFF together does the identifying system identify a state of release of the jammed manuscript.

REFERENCES:
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patent: 4465272 (1984-08-01), Kajita et al.
patent: 4620782 (1986-11-01), Kurando et al.
patent: 4763160 (1988-08-01), Honjo
patent: 4775139 (1988-10-01), Honjo et al.
patent: 4878087 (1989-10-01), Sakai et al.
patent: 4937622 (1990-06-01), Makiura
patent: 4954848 (1990-09-01), Arima

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