| 摘要 |
PROBLEM TO BE SOLVED: To provide an image reader reducing the amount of power consumption. SOLUTION: In groups G1-G6 including a plurality of LEDs, only the groups G3, G4, G6 are turned on and the other groups are turned off in the detection of a document size, thus reducing the amount of power consumption in the detection of the document size. COPYRIGHT: (C)2011,JPO&INPIT
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