Patent ID: 9298123
Filing Date: 2016-03-29
CPC Classification: G03G

Claim Text:
1. An optical writing control device that controls a light source that exposes a photoconductor to light to form an electrostatic latent image on the photoconductor, the optical writing control device comprising: a light emission control unit that controls the light source to emit light to expose the photoconductor to light and to form an electrostatic latent image and an electrostatic latent correction pattern; an optical sensor that detects a correction pattern on a conveying member, the correction pattern having been formed by toner on the conveying member by (a) developing the electrostatic latent correction pattern and (b) transferring the correction pattern from the photoconductor onto the conveying member, the correction pattern having been configured for correcting a transfer position at which a toner image obtained by developing the electrostatic latent image formed on the photoconductor is transferred onto the conveying member and including an oblique line pattern inclined relative to a conveying direction of the conveying member; a detection signal acquisition unit that acquires a detection signal from the optical sensor that detects the correction pattern formed by the toner on the conveying member; a correction value calculation unit that calculates, on the basis of the detection signal, a correction value for correcting the transfer position; and an angle adjustment processing unit that determines an angle of the oblique line pattern included in the correction pattern on the basis of a detection signal obtained by detecting an angle adjustment pattern by the optical sensor, the angle adjustment pattern including a plurality of continuous oblique line patterns having different inclinations relative to the conveying direction, wherein the light emission control unit controls the light source to emit light so that a plurality of oblique line patterns having different inclinations relative to the conveying direction are continuously formed to draw the angle adjustment pattern, and controls the light source to emit light so that an oblique line pattern having the determined angle is formed in the correction pattern to draw the correction pattern.