| 摘要 |
A sheet feeding apparatus including a track (20) having first (36) and second (38) spaced side walls and a third wall (40) therebetween to form a sheet receiveing space (34) and transport means (66,78) for moving a sheet (18) towards the third wall (40) and thereafter moving the sheet (18) in a downstream direction along the track (20). The transport means (66,78) includes a rotatable member (66) having a substantially planar surface (74) positioned in the sheet receiving space (34) and a rotary drive (56,58,60,62) enabling the rotatable member (66) and its surface (74) to be rotated. The transport means (66,78) also includes a toggle member (78) movable between first and second positions with regard to the rotatable member (66), with the toggle member (78) having a first pinch roller (104) to cooperate with the planar surface (74) of the rotatable member (66) to move a sheet (18) towards the third wall (40) when the toggle member (78) is in the first position, and the rotatable member (66) and its surface (74) are rotated. The toggle member (78) also has a second pinch roller (110) thereon to cooperate with the planar surface (74) of the rotatable member (66) to move the sheet (18) in the downstream direction when the toggle member (78) is in the second position and the rotatable member (66) and its surface (74) are rotated. An advantage of this arrangement is that the velocity of feed may be controlled by altering the position of the pinch rollers (104,110) on the toggle member (78) relative to the axis of rotation of the rotatable member (66). o |
