Patent ID: 8342502

Claim:
A sheet feed device comprising: a tray unit comprising: a first tray comprising a first holding portion for holding a sheet; a second tray comprising a second holding portion for holding a sheet, and configured to move between a first position and a second position relative to the first tray, the second holding portion being above the first holding portion, and the second position being upstream from the first position in a sheet feed direction; and a cam, and a sheet feeder comprising a feed roller and a cam follower, and configured to selectively feed a sheet from one of the first tray and the second tray in the sheet feed direction, wherein the tray unit and the sheet feeder are configured to move the feed roller, such that: when the second tray is in the first position relative to the first tray, the feed roller is in a first roller position, in which the feed roller is configured to contact the second holding portion of the second tray, and when the second tray is in the second position relative to the first tray, the feed roller is in a second roller position, in which the feed roller is configured to contact the first holding portion of the first tray, and wherein the cam follower of the sheet feeder is configured to follow the cam of the tray unit, such that the feed roller moves into a third roller position in which the feed roller is separated from the first holding portion of the first tray and the second holding portion of the second tray.