| 摘要 |
In the present invention, a U-turn path is formed by facing an outer guide surface of a guide member to an outer peripheral surface of a convey roller. A terminal edge of the outer guide surface forming a part of an outlet of the U-turn path is configured not to coincide with a straight line but is tapered to be convex at a central portion. When a thick sheet is conveyed through the U-turn path, a trail end of the thick sheet is shifted to the terminal edge while rubbing the outer guide surface. Then, the trail end of the sheet leaves the terminal edge. Since the terminal edge has the tapered configuration, the trail end of the sheet is gradually disengaged from the terminal edge, thereby preventing the snapping restoring action of the trail end to weaken the shock.
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