Abnormality detecting device for the original carriage of a copy

Details Abnormality detecting device for the original carriage of a copy Abnormality detecting device for the original carriage of a copy

1982-08-18

1984-12-25

Gonzales, John F.

Photocopying

Including fiber optics

355 14C, G03G 1500

Patent

active

044900350

ABSTRACT:
An abnormality detecting device for a copying machine of a type having a scanner for scanning an original to be copied comprises a timer or counter for counting the time required for the scanner to move from a start position to a scanned position. The count value of the timer or counter is subtracted as the scanner moves from the scanned position back towards the start position. The count value and the result of the subtraction is compared to find the presence or absence of any abnormal condition occurring in the return movement of the scanner from the scanned position towards the start position.

REFERENCES:
patent: 3813157 (1974-05-01), Fantozzi
patent: 3928772 (1975-12-01), Mooney
patent: 4023109 (1977-05-01), Shreve
patent: 4211482 (1980-07-01), Arai et al.
patent: 4269500 (1981-05-01), Ito et al.
patent: 4305653 (1981-12-01), Evanitsky
patent: 4366219 (1982-12-01), Beery

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