Copying device with a printing medium detecting device

Details Copying device with a printing medium detecting device Copying device with a printing medium detecting device

1997-08-11

1999-10-12

Terrell, William E.

Sheet feeding or delivering

Feeding

By means to convey sheet

27126502, 27125805, 271259, 27125801, B65H 702

Patent

active

059644605

ABSTRACT:
Sheets stacked on the sheet tray are delivered and fed one by one along the sheet conveyance path by the rotation of a sheet-feed roller in cooperation with a frictional member. The sheet conveyance path has a sheet-feed actuator provided thereon for detecting a sheet being conveyed and further has a sheet-pass actuator provided thereon between the sheet-feed actuator and the sheet-feed roller. Two slit arms of the sheet-feed and sheet-pass actuators are arranged so as to interrupt the optical path of a common optical sensor. When the rear of a preceding sheet being conveyed has passed by the sheet-pass actuator, the optical sensor detects the state. In response to this detection, a signal for starting the delivery of the next sheet is launched, thus reducing the interval between sheets.

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patent: 5423527 (1995-06-01), Tranquilla
patent: 5582399 (1996-12-01), Sugiura

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