Patent ID: 8451308
Filing Date: 2013-05-28
Classification: B41J,G02B,G03G

Abstract:
1. An image forming apparatus comprising: an optical scanning unit including a plurality of light sources to emit laser beams, a single oscillating mirror deflector to deflect the laser beams used for scan processing in a main scanning direction, and a scan-focusing member to focus the deflected laser beams onto a plurality of photoconductors; a measurement unit to measure a resonance frequency of the oscillating mirror deflector; a first adjustment unit to adjust a speed of the photoconductors in a sub-scanning direction; and a second adjustment unit to adjust a magnification ratio of image data in the sub-scanning direction, the first adjustment unit and the second adjustment unit adjusting the image magnification ratio of image data in the sub-scanning direction depending on the resonance frequency as measured by the measurement unit.