System to detect abnormal paper feed in printers

Details System to detect abnormal paper feed in printers System to detect abnormal paper feed in printers

1973-11-16

1976-04-13

Crowder, Clifford D.

Textiles: fiber preparation

226 11, 226 45, 340259, B41J 1504

Patent

active

039498565

ABSTRACT:
A system for monitoring the paper feed in printing mechanisms and the like, in which reference signals are derived in response to actuation of the feeding means for the paper web and in synchronism with the feed movement thereof, which signals may be compared with supervisory signals generated in response to advancing movement of the paper web, whereby predetermined abnormal relation between the reference and supervisory signals forms a criterion of improper paper advance conditions.

REFERENCES:
patent: 2564580 (1951-08-01), Pentecost et al.
patent: 2981396 (1961-04-01), Lane
patent: 2983356 (1961-05-01), Thompson
patent: 3043589 (1962-07-01), Folmar
patent: 3123195 (1964-03-01), Hewitt et al.
patent: 3317157 (1967-05-01), Leiber
patent: 3323700 (1967-06-01), Epstein et al.
patent: 3659081 (1972-04-01), Piccione
patent: 3779440 (1973-12-01), Casale et al.

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