Patent ID: 8072477
Filing Date: 2011-12-06
Classification: G03G,H04N

Abstract:
1. An image forming apparatus comprising: a plurality of optical scanning parts that scan a photoconductor with light of plurality of colors to form an electrostatic latent image on the photoconductor based on print data and correspond to the plurality of colors respectively; a controller that, based on a horizontal synchronization signal being applied to any one of the plurality of optical scanning parts, calculates an offset value for a light-scan of an other optical scanning part of the plurality of optical scanning parts, and controls the other of the plurality of the optical scanning parts to scan the photoconductor with the light according to the calculated offset value, wherein the controller controls the optical scanning parts to scan the photoconductor with the light according to the calculated offset value if the horizontal synchronization signal corresponding to the any one optical scanning part is applied in an effective image interval in which the other optical scanning part scans the photoconductor with the light.