| 摘要 |
<p>PURPOSE: To prevent a toner image on a sheet material from being disturbed by vibration at the time of perforation of binding holes for a binder. CONSTITUTION: An actual feed length L1 of a sheet feed path from a transfer position P1 between a photosensitive drum 4A and a fixing roller 4B to a binder binding hole perforation start position P2 is set to be longer than a length LS of a sheet material S in a feed direction (L1 >LS). In this manner, at the start of an action of perforating a sheet material S when the leading end thereof reaches the binder binding hole perforation start position P2 , the trailing end of the sheet material S has already passed through the transfer position P1 , and transfer of a toner image has been completed. Therefore, there is no possibility that vibration by a perforating action may be transmitted to a sheet material S to cause disturbance of a toner image at the time of transfer.</p> |
