Patent ID: 7847810

Claim:
An image forming apparatus comprising: a first photoconductor; a second photoconductor disposed at a downstream side of the first photoconductor in a moving direction of a medium; a first exposure unit which is configured to form a first electrostatic latent image on the first photoconductor line by line at first exposure timing intervals in a first exposure enabling time period based on successive lines of first image data; a second exposure unit which is configured to form a second electrostatic latent image on the second photoconductor line by line at second exposure timing intervals in a second exposure enabling time period based on successive lines of second image data; a correction unit which is configured to correct at least one of the first exposure timing intervals so as to adjust first transfer position intervals between successive lines of a first visible image provided by developing the first electrostatic latent image and the second exposure timing intervals so as to adjust second transfer position intervals between successive lines of a second visible image provided by developing the second electrostatic latent image; and a change unit which is configured to change the second exposure enabling time period so as to suppress a difference between the number of the successive lines of the first image data for forming the first electrostatic latent image on the first photoconductor in the first exposure enabling time period and the number of the successive lines of the second image data for forming the second electrostatic latent image on the second photoconductor in the second exposure enabling time period.