Patent ID: 7129966
Filing Date: 2006-10-31
Classification: B41J,G02B

Abstract:
1. An image forming apparatus comprising: n independently driven light sources; a scanner unit that causes n light beams from said n light sources to perform scanning on a photosensitive member in a main scanning direction; a moving unit that causes the n light beams to perform scanning on said photosensitive member in a sub-scanning direction by moving said photosensitive member; a controller that controls said scanner unit and/or said moving unit so that a main scanning line on the photosensitive member is subjected to overlap exposure k times by different light beams, said controller having at least a first mode in which k is set to k a modulator that modulates the respective light beams so that dot strings formed by the light beams are shifted by a distance of d/k in the main scanning direction, where d is an interval between dots formed by one light beam.