| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable device and a highly reliable for reading images with which the generation of black stripes or the like due to an abnormal state such as dust/stains or the like present on an original mounting means at the time of reading moving images of the original with a fixed reader. SOLUTION: This image reader is provided with a means 520 for detecting the dust on original platen glass 107. Dust detection is executed during a non original read period, dust correction is performed on the basis of a dust detection result while successively reading originals and the dust evading processing of changing a shimming through of reading moving images of the original with a fixed reader to a position without the dust by utilizing the dust detection function is performed from the end of a series of original read operations to the next original read operation. Further, in the case that it is difficult to evade the dust, the control of inhibiting the reading of moving images of the original with fixed reader itself and switching to original read by optical scanning is performed.
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