| 摘要 |
A drive device has a drive source; a rotatable member gear rotated by a driving force from the driving source; a follower gear, including a pair of gears which are coaxially disposed with each other and are rotatable at the same rotational speed and including an urging device for urging the pair of gears in rotational directions opposite from each other, for being rotated at the rotational speed higher than that of the rotatable member gear; a rotation detecting device for detecting rotation of the follower gear and including a flag rotatable together with said follower gear and provided coaxially with said follower gear and includes a detecting portion for detecting passing of the flag; and a driving source control portion for controlling said driving source on the basis of the computation result stored in the storing portion.
|
