Patent ID: 9329385
Filing Date: 2016-05-03
CPC Classification: B41J,G02B,G03G

Claim Text:
1. An exposure device comprising: a mirror which reflects light emitted from a light source in a housing toward an object to be exposed; first and second elastic members positioned at first and second ends opposite each other in a longitudinal direction of the mirror and pressing against one of a reflection surface of the mirror and a surface opposite the reflection surface; a first eccentric cam positioned opposite to the first elastic member across the mirror and rotatable around a first rotary shaft, the first eccentric cam having an eccentric shape including a first outer peripheral portion which abuts against a first mirror support point on the first end in the longitudinal direction of the mirror, the eccentric shape causing a distance between the first rotary shaft and the first mirror support point to vary when the first eccentric cam is rotated around the first rotary shaft; and a second eccentric cam positioned opposite to the second elastic member across the mirror and rotatable around a second rotary shaft, the second eccentric cam having an eccentric shape including a second outer peripheral portion which abuts against a second mirror support point on the second end, the eccentric shape causing a distance between the second rotary shaft and the second mirror support point to vary when the second eccentric cam is rotated around the second rotary shaft, wherein the first and second rotary shafts of the first and second eccentric cams are fixed perpendicular to a bottom surface of the housing, the first and second eccentric cams have first and second adjustment gears provided around the first and second rotary shafts, respectively, the first and second adjustment gears configured to vary the distances between the first and second rotary shafts and the first and second mirror support points in a stepwise manner as the first and second eccentric cams are respectively rotated, and the first and second eccentric cams have respective recesses for adjustment formed on bottom surfaces of the first and second rotary shafts.