SCAN LINE ADJUSTMENT DEVICE, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a scan line adjustment device having displacement means of an optical element formed by combining a rotation driving member with a feed screw mechanism, configured to improve positioning reliability of the optical element while preventing screw galling in the feed screw mechanism.SOLUTION: In a scan line adjustment device for adjusting attitude of an optical element, a linear motion mechanism part 11 for displacing the optical element includes: a stepping motor 14 having a driving shaft with a male screw part to control a rotation angle; a linear motion adjuster 15 having a female screw part to be engaged with the male screw part; a linear motion guide 16 which regulates rotation of the linear motion adjuster 15 due to rotation of the male screw part; and an elastic member 19 which regulates attitude of the linear motion adjuster 15 within a plane orthogonal to a displacement direction.