Patent ID: 7540495

Claim:
A feeder, adapted to feed a medium to a down stream section in a first direction, comprising: a feeding tray, having a supporting face adapted to support the medium thereon and formed with a groove; a first edge guide, provided on the supporting face so as to be slidable in a second direction perpendicular to the first direction; a second edge guide, provided on the supporting face so as to oppose to the first edge guide, so that the medium is placed therebetween; and an auxiliary guide body, provided in the first edge guide and having a projection slidably engaged with the groove, the auxiliary guide body being slidable relative to the first edge guide in the first direction and a third direction opposite to the first direction, in accordance with the slide movement of the first edge guide in the second direction by way of the engagement between the projection and the groove, the auxiliary guide body having a guiding face projected from the first edge guide in the first direction and third direction, wherein the guide face protrudes in the first direction when a distance between the first edge guide and the second edge guide is no greater than a first prescribed value and adapted to be brought into contact with one of the side edges of the medium.