Device for sensing sheet transport condition

Details Device for sensing sheet transport condition Device for sensing sheet transport condition

1984-03-28

1987-02-03

Gruber, Felix D.

Boots, shoes, and leggings

250561, 355 14SH, 356400, 364478, G06F 1546, B65H 23032, B65H 2318

Patent

active

046412727

ABSTRACT:
In an electrophotographic copier, while a document is transported toward a predetermined position on a glass platen, its lateral dislocation and skew with respect to a document transport path as well as an amount of the dislocation and a direction of the skew are commonly sensed by a single sensor. The single sensor is positioned adjacent to one of laterally opposite ends of the transport path and has sensing surface of a predetermined area. While the document moves past the sensing surface of the sensor, the sensor generates a signal which corresponds to an area of the sensing surface which is occupied by the sheet.

REFERENCES:
patent: 3912193 (1975-10-01), Calver
patent: 4146797 (1979-03-01), Nakagawa
patent: 4201378 (1980-05-01), Hams
patent: 4303189 (1981-12-01), Wiley et al.
patent: 4518862 (1985-05-01), Dorn

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