Buckle control system

Details Buckle control system Buckle control system

1976-02-02

1977-05-24

Cherry, Johnny D.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

271 10, 271 34, 271245, 355 3R, G03G 1500, B65H 906, B65H 920

Patent

active

040251870

ABSTRACT:
A sensor arrangement is provided for sensing the position of an edge of a fed sheet adjacent a front stop. Timing circuitry responsive to the sensor arrangement is used to time a reference time interval from the sensing of the edge. The timing circuitry is coupled to a sheet feeder and is capable of stopping the sheet feeder upon the expiration of the reference time interval. The reference time interval is selected to be sufficiently long to allow the sheet feeder when feeding a sheet to form a buckle in the sheet. The reference time interval is adjustable to provide adjustability of the height of the buckle.

REFERENCES:
patent: 3469834 (1969-09-01), Stange et al.
patent: 3517923 (1970-06-01), Hoffman et al.
patent: 3626956 (1971-12-01), Sauder
patent: 3630519 (1971-12-01), Spear
patent: 3768803 (1973-10-01), Stange

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