Sheet feeding apparatus, image reading apparatus equipped...

Sheet feeding or delivering – Feeding – With means to interrupt feeding

Reexamination Certificate

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C271S242000, C271S265040

Reexamination Certificate

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07552924

ABSTRACT:
A sheet feeding apparatus includes two transport devices arranged in a sheet guide that guides a sheet from a stacker to a processing position for reading an image or printing. A double feed detection device is arranged between the transport devices for detecting a double feed of the sheets over a predetermined length region (measurement length). A sheet length recognition device is provided for recognizing at least two portions of a length of the sheet stacked on the stacker in a transport direction, and a judgment device is provided for judging the double feed of the sheets based upon detection data from the double feed detection device. The judgment device judges the double feed of the sheets according to detection data of one measurement region selected from a plurality of measurement regions based on information obtained from the sheet length recognition device.

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Patent Abstracts of Japan; Publication No. 10-257595; Date of publication Sep. 25, 1998; Applicant: Murata Mfg Co Ltd; Title: Ultrasonic Sensor.

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