Patent ID: 7684099
Filing Date: 2010-03-23
Classification: B41J,G02B

Abstract:
1. An optical scanning device comprising: a first rotary polygon mirror which deflects and scans a first laser beam with respect to a first member to be scanned, the first member has a center axis of rotation; a second rotary polygon mirror which deflects and scans a second laser beam with respect to a second member to be scanned, the second member has a center axis of rotation which is parallel to the axis of rotation of the first member; a plurality of mirrors which reflect thereon the laser beams deflected and scanned by the first and second rotary polygon mirrors; and an optical box which houses therein the first and second rotary polygon mirrors and the plurality of mirrors; wherein a rotational axis of the first rotary polygon mirror and a rotational axis of the second rotary polygon mirror are inclined toward the same side, as viewed in directions of the center axis of the first member to be scanned and the center axis of the second member to be scanned with respect to a direction perpendicular to a reference plane inclusive of each of the center axes of the members to be scanned; and wherein the first rotary polygon mirror deflects and scans a third laser beam with respect to a third member to be scanned, and the second rotary polygon mirror deflects and scans a fourth laser beam with respect to a fourth member to be scanned.