| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate the rotation of a roller for turning-up of side edge of sheets, paper feed or the like by a single drive source and the oscillation operation of an oscillation arm for coming into contact with and leaving a paper face or the like. SOLUTION: A motor drive shaft 16 transmits rotation force to a roller 30 through a belt 36. Furthermore, since a coil part 18C of a twist coil spring 18 is press-fitted in the drive shaft 16, an oscillation arm 20 journaled on the drive shaft 16 oscillates centered on the drive shaft 16, and the roller 30 comes into contact with paper which is conveyed to a positioning place already and is copied on one face thereof and feeds it to a positioning position. When an oscillation angle of the oscillation arm 20 is increased, a stopper 44 hits a coil end part 18B and expands a coil diameter so that friction engagement of the coil part 18C and the drive shaft 16 is released and the oscillation of the oscillation arm 20 is stopped. The oscillation arm 20 returns to its original position due to the reverse rotation of a motor.</p> |
