Patent ID: 7931265
Filing Date: 2011-04-26
Classification: B65H,Y10S,Y10T

Abstract:
1. A sheet feeder, comprising: a feed roller configured to contact and feed a top sheet of a stack of sheets while rotating in a predetermined feeding direction; an input gear mechanism for transmitting a driving force; a driving gear configured to be rotated in a predetermined direction and transmit the driving force received from the input gear mechanism, the driving gear including a first gear mechanism configured to transmit the driving force from the driving gear to the feed roller so as to rotate the feed roller in a reverse direction opposite to the feeding direction; a second gear mechanism configured to transmit the driving force from the driving gear to the feed roller so as to rotate the feed roller in the feeding direction; and a locking member configured to engage with the locking projection through rotation of the driving gear, and lock rotation of the driving gear in the home position, wherein the driving gear further includes: