Plural-sheet detector

Details Plural-sheet detector Plural-sheet detector

1983-12-22

1985-03-12

Miller, Stanley D.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting animate or inanimate entities

271263, G06M 706

Patent

active

045049610

ABSTRACT:
In a plural-sheet detector for a printing machine, which detects the number of sheets piled as the number of serial pulse signals, in which whenever the serial pulse signals are detected, the count value is provided, the count value being compared with a reference count value to provide a deviation value representative of the difference therebetween, and the deviation value is compared with a reference deviation value, so that when the deviation value is larger than the reference deviation value, the number of sheets is determined unacceptable.

REFERENCES:
patent: 3778051 (1973-12-01), Allen et al.
patent: 3930582 (1976-01-01), Gartner et al.
patent: 4072854 (1978-02-01), Oshima et al.
patent: 4121716 (1978-10-01), Luperti et al.
patent: 4154437 (1979-05-01), Butcheck et al.
patent: 4339657 (1982-07-01), Larson et al.
"Double Document Detect System" by Boothroyd, Published in IBM Technical Disclosure Bulletin, vol. 19, No. 12, May 1977, pp. 4749-4750.

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