Patent ID: 7686291

Claim:
A sheet conveyance device comprising: a pick-up roller that is movable between a feeding position where a recording sheet stacked in a sheet tray is fed and a feed standby position where the pick-up roller is separated from the recording sheet; a handling member disposed on downstream of the pick-up roller in a sheet conveyance direction, the handling member separating the recording sheet fed by the pick-up roller one by one and conveying the separated recording sheet; a locking member that is rotatable and comprises a cylindrical portion, a protruding portion and an abutting portion, wherein the cylindrical portion has a same rotation axis as the pick-up roller, the protruding portion protrudes from an outer circumferential surface of the cylindrical portion, the abutting portion is formed on the outer circumferential surface of the cylindrical portion, and the abutting portion is disposed between the pick-up roller and the handling member; and a roller-movement-timing changing unit that changes roller movement timing at which the pick-up roller is moved from the feeding position to the feed standby position, in accordance with a sheet information of a used recording sheet wherein the abutting portion abuts against a front end of the recording sheet in the sheet conveyance direction to prevent movement of the recording sheet in the sheet conveyance direction so as to position the front end of the recording sheet at a given position in a locked state.