Image forming apparatus with function of tilt adjustment to laser-beam reflecting mirror

Abstract

An image forming apparatus has functions of tilt adjustments to a mirror for reflecting a laser beam and outputting an image after registration of a plurality of images. The apparatus includes a laser source for generating laser beams, a plurality of mirrors for reflecting a plurality of light beams including at least one reference beam for forming the images based on the laser beams generated by the laser source, an image forming unit for forming the images for each of the light beams, an image transfer unit for storing the images formed by the image forming unit and transferring the stored images in a predetermined sub-scanning direction, an inclination detecting section for detecting inclinations of the images stored by the image transfer unit in a main-scanning direction in relation to the sub-scanning direction at least on the reference beam, and an inclination correcting section for correcting the inclinations detected by the inclination detecting section on the reference beam in the main-scanning direction by adjusting a relative angle of the mirror for reflecting the reference beam in the main-scanning direction.