| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce cost and space required for a detected member serving as a component of an encoder. <P>SOLUTION: When a screw 54 fixing a photosensitive drum 12 to a rotary shaft 52 is detected by a reflection type photosensor 58, a rotation position of the photosensitive drum 12 is detected. <P>COPYRIGHT: (C)2007,JPO&INPIT |
