Optical writing control device, image forming apparatus, and optical writing control method for controlling the light emitting timing of a light source

Abstract

An optical writing control device includes: a light emission control unit which controls light emission of multiple light sources for respective different colors and exposes multiple image carriers; and a correction amount calculating unit which calculates a correction amount for each of the different colors on the basis of a difference between a central value of a distribution range of positional deviation amounts in a sub-scanning direction for the respective different colors and the positional deviation amount for a corresponding color. The light emission control unit delays light emitting timing of a light source, which is to be delayed, by delaying reading timing of pixel information stored in a storage medium, and delays timing at which the pixel information about colors other than a color, light emitting timing of a light source for which is to be advanced, starts to be obtained from an image forming apparatus main body.