Patent ID: 7995086
Filing Date: 2011-08-09
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a laser array in which n (a natural number equal to or larger than 2) light emitting sources are arrayed; a polygon mirror configured to reflect n laser beams emitted from the laser array and periodically scan a rotating photoconductive member to form an image on the photoconductive member; an image-input converting unit configured to create, for each of channels of the laser array, a recording pattern for executing pulse width control from input image data and extract recording patterns of an nth channel and a first channel of the next scanning of the laser array; an overlapping control unit configured to calculate the width of laser pulses in the same position in a main scanning direction as overlapping width from the extracted two recording patterns; a data correcting unit configured to reduce laser pulse width in at least one recording pattern of the recording patterns of the nth channel and the first channel of the next scanning by a reduction amount corresponding to the calculated overlapping width and correct the laser pulse width; and a laser driver configured to control the intensity of laser beams in the respective channels of the laser array according to the recording patterns after the correction.