| 摘要 |
Roller pairs comprise respective upper rollers and respective lower rollers. The lower rollers are associated with respective displacement members connected thereto. The displacement members have oblong holes defined therein, and eccentric shafts fixed to respective ends of a rotatable shaft connected to a motor are supported in the respective oblong holes. A transversely shifting mechanism has a pair of transversely shifting fingers for transversely pressing a recording sheet toward a center thereof, and a displacing mechanism for displacing the transversely shifting fingers. The displacing mechanism comprises a pair of racks disposed on transverse shifters movable back and forth in the transverse direction of the recording sheet, an a pinion held in mesh with the racks and rotatable by a motor. The transverse shifters have integral transversely shifting fingers, respectively, for pressing the recording sheet.
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