Patent ID: 7936494
Filing Date: 2011-05-03
Classification: B41J,G02B

Abstract:
1. An optical scanning device that scans a surface of a medium in a main scanning direction, the optical scanning device comprising: a light source that emits a luminous flux; a deflector that deflects the luminous flux emitted by the light source in a deflection direction toward the surface of the medium; an optical system that includes an elongated optical element that focuses the luminous flux deflected by the deflector on the surface of the medium, the elongated optical element being arranged substantially parallel to the main scanning direction; a first elastic member that supports an end of the optical element; a reinforcing member that reinforces the optical element and is arranged outside a beam effective range and along a length of the optical element; a pressing member that presses the optical element in a pressing direction that is orthogonal to the deflection direction; and a second elastic member that biases the optical element in a direction opposite to the pressing direction, wherein the pressing member and the second elastic member control a posture of the optical element at a substantially central part in the main scanning direction.