| 摘要 |
A sheet feeder comprises a roller 10 configured to rotate about an axis and an input drive (8, fig. 1) configured to deliver single sheets 21,22,23 to the roller 10 such that a leading edge of each sheet is substantially parallel to the axis. The roller 10 comprises a plurality of fins 12 extending along the axis, which may be flexible fins. As the roller 10 rotates, one of the sheets 21 is lifted by the rotating fins 12 to pass over the roller 10, while the leading edge of a following sheet 22 is delivered to the roller in an underlapping relationship with the first sheet 21. Preferably there are between three and ten fins. In some embodiments, there is a gate 18, which controlling the output of sheets from the roller 10 |
