Patent ID: 9592974
Date: 2017-03-14
CPC Classifications: B65H

Claim:
1. A sheet feeder comprising: a housing; a supporter attached to the housing, the supporter having a particular surface; a pickup roller rotatable around a pickup roller axis, a part of a surface of the pickup roller being exposed from the particular surface; a stopper movable between a first position and a second position, a distal end of the stopper being configured to, when the stopper is in the first position, be closer to the pickup roller axis than the part of the surface of the pickup roller, the distal end of the stopper being further configured to, when the stopper is in the second position, be farther from the pickup roller axis than the part of the surface of the pickup roller; a driving mechanism configured to move the stopper between the first position and the second position, the driving mechanism comprising a motor; and a set guide movable between a third position and a fourth position, the set guide having a first surface that faces in a particular direction such as to become farther away from the part of the surface of the pickup roller, the first surface being configured to, when the set guide is in the third position and in contact with the stopper in the first position, be farther from the pickup roller axis than all the surface of the pickup roller, the first surface being further configured to, when the set guide is in the fourth position and separated away from the stopper in the second position, be closer to the pickup roller axis than the part of the surface of the pickup roller; wherein the set guide is rotatable around a first rotational axis along the pickup roller axis, the first rotational axis being positioned at a middle portion of the set guide in the sheet feeding direction, and wherein the stopper is configured to contact an end portion of the set guide in the sheet feeding direction.