Patent ID: 7918445

Claim:
A sheet feeding device to feed a sheet in a sheet stack into a sheet feeding path, comprising: a feed roller configured to contact the sheet stack and feed the sheet in a feeding direction; a guide member, having a guide surface, which is configured to contact a side of the sheet fed by the feed roller, to guide the sheet being fed along a guiding direction, such that the feeding direction is inclined with respect to the guiding direction; a shifting unit to shift the feed roller in a direction toward the guide surface before the feed roller is rotated; a separator roller to separate the sheet fed by the feed roller from the sheet stack and forward the sheet to the guide member; and a separator piece, which is arranged in a position to become in contact with the sheet fed by the feed roller on a surface opposite from a surface being in contact with an outer peripheral surface of the separator roller so that resistance is generated between the separator piece and the sheet being forwarded by the separator roller, wherein the feeding direction and a direction in which the separator roller forwards the sheet are parallel, wherein the direction in which the separator roller forwards the sheet is inclined with respect to the guiding direction, and wherein the shifting unit shifts the feed roller along with the separator roller in the direction toward the guide surface before the feed roller is rotated.