Sheet feed monitoring system

Details Sheet feed monitoring system Sheet feed monitoring system

1980-10-06

1983-12-13

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

271263, G08B 2100

Patent

active

044207476

ABSTRACT:
A system for detecting missing or superimposed sheets fed to a sheet processing machine uses a measuring device for generating a signal increasing with the number of superimposed sheets and an evaluating device for emitting an electrical signal when irregularities occur. A pulse transmitter is synchronized to the sheet feed mechanism and operates to emit an initial and final pulse timed to the sheet feed. Electronic storage is reset upon the initial pulse, and operates to integrate values of the measured signal until the final pulse is received. Upon receipt of the final pulse, the stored value is compared to a reference value to detect any irregularities. Preferably a microcomputer is used for signal processing.

REFERENCES:
patent: 2963293 (1960-12-01), Klein
patent: 3182301 (1965-05-01), Kolb
patent: 3826487 (1974-07-01), Forster et al.
patent: 4110032 (1978-08-01), Hubbard et al.
patent: 4154437 (1979-05-01), Butcheck et al.
patent: 4275879 (1981-06-01), Yamashita et al.

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