| 摘要 |
PROBLEM TO BE SOLVED: To provide an image reading apparatus and document detecting method to shorten an image reading time while reduction in thickness of the apparatus and reduction in cost are kept. SOLUTION: An image reading apparatus includes a document table on which a document as an image reading object is placed, a platen cover that holds the document to the document table, a carriage that moves along the document table, a document size detecting element that detects a size of the document at a position in front of an image reading start position of the document in an image reading direction, and a control device that detects the document size based on an output of the document size detecting element. COPYRIGHT: (C)2008,JPO&INPIT
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