Original reader

Abstract

PURPOSE: To display the production of stain when any stain takes place by confirming the stain state of a read sensor and a white roller prior to read operation of an original. CONSTITUTION: The reader is provided with a comparison means comparing a read output value of a read sensor 2 and a set stain reference value and outputting a stain detection signal when the read output exceeds the stain reference value. When the stain detection signal is outputted till the original reaches a read position after an original detection means 10 detects the original, the stain is discriminated by a discrimination means 26. When the stain is discriminated, the production of dirt is displayed on a display means 27. COPYRIGHT: (C)1992,JPO&Japio

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