| 摘要 |
<P>PROBLEM TO BE SOLVED: To reliably detect the opening and closing operation of a document cover by a simple constitution. <P>SOLUTION: With the opening and closing operation of an automatic document feeding part 10, the light quantity distribution of external light entering from an opening H is varied. According to the detection result of the variation in light quantity distribution, the opening and closing operation of the automatic document feeding part 10 is detected. <P>COPYRIGHT: (C)2012,JPO&INPIT |
