Patent ID: 8517370

Claim:
A sheet feed device comprising: a first tray comprising a first holding portion configured to hold a sheet; a second tray comprising a cam and a second holding portion configured to hold a sheet and move between a first position and a second position relative to the first tray, wherein the second holding portion is positioned above the first holding portion, and the second position is upstream from the first position in a sheet feed direction; and a sheet feeder comprising a feed roller and a cam follower, wherein the sheet feeder is configured to feed the sheet from the second tray in the sheet feed direction when the second tray is in the first position and to feed the sheet from the first tray in the sheet feed direction when the second tray is in the second position; wherein the cam follower of the sheet feeder is configured to follow the cam of the second tray and to move the feed roller among a first roller position, a second roller position, and a third roller position such that: the feed roller moves from the second roller position, in which the feed roller contacts the first holding portion, to the third roller position, in which the feed roller is separated from the first holding portion and the second holding portion, during a movement of the second tray from the second position to a third position between the first position and the second position, and the feed roller moves from the third roller position to the first roller position, in which the feed roller contacts the second holding portion, during a movement of the second tray from the third position to the first position.