A conveyor device includes a drive roller that conveys a tray or a sheet through a conveying path, a rotating shaft that rotates between a first position and a second position, a spur roller that moves between a fourth position, in which the spur roller approaches the drive roller, and a fifth position, in which the spur roller separates from the drive roller at a distance greater than a thickness of the tray, an elastic shaft that supports the spur roller and urges the spur roller toward the drive roller, a first contacting portion that contacts one surface of the tray passing through the conveying path when the rotating shaft is in the second position; and a second contacting portion that deforms the elastic shaft and that moves the spur roller to the fifth position when the rotating shaft rotates from the first position to the second position.