| 摘要 |
An apparatus and method of straightening turned over (dog-eared) or curled edges of sheets of paper or the like, particularly, original documents being fed in a document feeder. In various sheet feeders for feeding flimsy sheets of paper or the like in a sheet feeding direction through a sheet feeding path at a desired sheet movement speed, some such sheets have or acquire folded corners which are folded back relative to said sheet feeding direction. This system can automatically unfold the leading edge sheet corners with rotatable bristled brushes. The periphery of the bristled brush extends into the sheet feeding path and is rotated at a peripheral brush bristle speed with a forward vector component in the direction of sheet movement which is substantially higher than the sheet movement speed for acquiring and lifting the folded back sheet corners and forwardly unfolding them in the sheet feeding direction while the sheet continues to move. Additional non rotating brushes can be used to remove trail edge corner dog-ears.
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