Patent ID: 8246039
Filing Date: 2012-08-21
Classification: B65H

Abstract:
1. A sheet feeding apparatus including a sheet separating and feeding portion which separates and feeds sheets one by one accommodated in a sheet accommodating portion, the sheet separating and feeding portion comprising: a pickup roller which feeds out a sheet accommodated by the accommodating portion; a feed roller which is rotated in a sheet feeding direction to feed the sheet fed out by the pickup roller; a separation roller which is arranged rotatably in the direction opposite to the sheet feeding direction, and which forms a separation nip portion for separating the sheets one by one therebetween with the feed roller while being press-contacted to the feed roller and which is capable of rotating along with a rotation of the feed roller; a drive portion which rotates the feed roller; a control portion which controls the drive portion to rotate the feed roller by a predetermined amount without feeding the sheet by the pickup roller so as to rotate the separation roller before a next job starts after a last sheet of a job is fed from the sheet accommodating portion; and a detection portion arranged immediately downstream in the sheet feeding direction of the feed roller and which is configured to detect the sheet fed by a rotation of the feed roller by the predetermined amount, wherein the control portion controls the drive portion to stop a rotation of the feed roller by less than the predetermined amount after the last sheet of the job is fed in a case that the sheet is detected by the detection portion and the control portion controls the drive portion to rotate the feed roller by the predetermined amount in a case that the sheet is not detected previously.