Patent ID: 7703763

Claim:
A sheet conveying device, comprising: a tray comprising a bottom surface, wherein the tray is configured to hold at least one sheet therein, and has a recess formed in the bottom surface; a particular rotating member configured to move between a first position in which the particular rotating member contacts the at least one sheet held in the tray and a second position in which the particular rotating member is separated from the tray, and wherein the particular rotating member is configured to rotate to selectively convey one of the at least one sheet held in the tray in a particular direction when the particular rotating member is in the first position; a particular operative portion configured to selectively move into and out of the recess, wherein a movement of the particular operative portion into the recess corresponds to a movement of the particular rotating member into the second position; a moving device configured to selectively move the particular operative portion into and out of the recess; a positioning member configured to move along the bottom surface of the tray between a first bottom position and a second bottom position; and a preventing member configured to prevent the particular operative portion from moving into the recess when the positioning member is in the second bottom position, and to allow the particular operative portion to move into the recess when the positioning member is in the first bottom position, wherein when the positioning member is in the second bottom position, the tray is configured to hold a sheet of a first predetermined size, and when the positioning member is in the first bottom position, the tray is configured to hold a sheet of a second predetermined size, which is greater than the first predetermined size.