Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1985-12-19
1988-04-12
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356434, G01N 924
Patent
active
047376279
ABSTRACT:
A method of detecting the feeding of doubles in a high speed document counter is disclosed. Also, a method of detecting the feeding of a chain of documents as a batch of documents are fed through a feed path is disclosed.
REFERENCES:
patent: 4237378 (1980-12-01), Jones
patent: 4380396 (1983-04-01), Arndt et al.
patent: 4642456 (1987-02-01), Watanabe
patent: 4650991 (1987-03-01), Croset et al.
patent: 4652742 (1987-03-01), Wauer et al.
Hughes Arthur D.
Makoid Kenneth C.
Follmer Frank A.
Technitrol, Inc.
Westin Edward P.
Wieland Charles F.
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