Apparatus for detecting the passage of multiple superposed...

Details Apparatus for detecting the passage of multiple superposed... Apparatus for detecting the passage of multiple superposed...

G - Physics

01

B

354/42, 340/123.

G01B 7/06 (2006.01) B65H 7/12 (2006.01) G07D 11/00 (2006.01)

Patent

CA 1281096

- ? - APPARATUS FOR DETECTING THE PASSAGE OF MULTIPLE SUPERPOSED SHEETS ALONG A FEED PATH Abstract An apparatus for detecting the passage of superposed sheets along a feed path includes first and second cooperating rollers (12, 14), the second roller (14) being movable away from the first roller (12) in response to the passage of a single or multiple sheet between the rollers (12, 14). The first roller (12) has a diameter twice that of the second roller (14). Voltage generating means (42) produces an output voltage which varies linearly with movement of the axis of the second roller relative to the axis of the first roller (12). This voltage is integrated over one complete revolution of the first roller (12) first with no sheet present and then with a single or multiple sheet passing between the rollers (12, 14) to produce first and second values respectively. The first value is subtracted from the second value to produce a third value on the basis of which the number of sheets corresponding to the second value is determined.

566606

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