Paper feed control device

Details Paper feed control device Paper feed control device

1984-09-18

1985-09-10

Schacher, Richard A.

Sheet feeding or delivering

Feeding

With means to interrupt feeding

271265, B65H 702

Patent

active

045401705

ABSTRACT:
The invention provides a paper feed control device having paper feed rollers for feeding a paper sheet such as an original to a predetermined position, a first sensor for detecting the paper sheet, a second sensor for detecting leading and trailing ends of the paper sheet, a microcomputer for controlling the rollers in response to the outputs signals from the sensors, and a compensating circuit for compensating the level of the output signal from the second sensor which is maintained in a non-detecting state until the paper sheet completely passes through the second sensor. Therefore, even if punched holes for filing are formed on the paper sheet, the punched hole may not be detected as the trailing end of the paper sheet, resulting in proper feeding.

REFERENCES:
patent: 3322261 (1967-05-01), Jensen
patent: 3883134 (1975-05-01), Shinaki
patent: 4201378 (1980-05-01), Hams
patent: 4400085 (1983-08-01), Nezu

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