IMAGE FORMATION OPTICAL SCANNER, IMAGE FORMING APPARATUS, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM STORING IMAGE FORMING APPARATUS OPTICAL SCANNING PROGRAM

摘要

An optical scanner includes a light source; a rotating polygon mirror that reflects and deflects the light beam output from the light source; a drive unit that rotationally drives the rotating polygon mirror; a beam detection unit that detects the light beam; and a control unit that controls the light source and the drive unit. The control unit can control the drive unit with a detection result of the beam detection unit, and adjust a rotational speed of the rotating polygon mirror. The control unit has a high definition mode in which the rotational speed of the rotating polygon mirror is controlled with high accuracy at the time of normal light beam irradiation, and a light source life mitigation mode in which light beam irradiation is performed by controlling the output of the light source with keeping rotation of the rotating polygon mirror during standby.

主权项

1. An image formation optical scanner configured to perform scanning with a light beam and perform irradiation on a photoreceptor for image formation, the optical scanner comprising:
a light source; a rotating polygon mirror on which the light beam output from the light source is reflected at a plurality of mirror surfaces and is deflected; a drive unit that rotationally drives the rotating polygon mirror; a beam detection unit that detects the light beam; and a control unit that controls the light source and the drive unit, wherein the control unit has a function of controlling the drive unit with a detection result of the beam detection unit and adjusting a rotational speed of the rotating polygon mirror, and the control unit has a high definition mode in which the rotational speed of the rotating polygon mirror is controlled with high accuracy at a time of normal light beam irradiation, and a light source life mitigation mode in which light beam irradiation is performed by controlling the output of the light source with keeping rotation of the rotating polygon mirror during standby in which image formation is not performed.