Patent ID: 9696650
Date: 2017-07-04
CPC Classifications: G03G,H04N

Claim:
1. An image forming apparatus comprising: an image forming unit in which a plurality of chips including a plurality of light emitting elements are arranged in a main scanning direction, the image forming unit forming an image on a recording medium by developing an electrostatic latent image formed on an image holder, the electrostatic latent image formed on the image holder by exposing the image holder to light from the light emitting elements; a fixing unit that fixes the image formed on the recording medium; a reading unit that reads the image fixed on the recording medium by the fixing unit; a density specification unit that specifies a density of a region in the image read by the reading unit for each of the chips, the region corresponding to each of the chips; a correction amount specification unit that specifies a correction amount of light quantity of light emitted from the chip based on an approximate value obtained by approximating the density specified by the density specification unit, the density of a region corresponding to a chip arranged in a predetermined range from a chip for which the correction amount specification unit specifies the correction amount of the light quantity; and a correction unit that corrects the light quantity of the light emitted from the chip in accordance with the correction amount specified by the correction amount specification unit, wherein the correction amount specification unit specifies the correction amount of the light quantity of the light emitted from the chip based on the approximate value, the approximate value being adjusted by using a coefficient; and the image forming apparatus further comprises a change unit that changes the coefficient based on the density currently specified by the density specification unit, and the density previously specified by the density specification unit.