Patent ID: 9075371
Filing Date: 2015-07-07
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a movable belt member; a cleaning blade contacted to said belt member; a plurality of image forming stations including a first image forming station and a second image forming station configured to form first and second adjustment toner images, respectively, on said belt member in a transfer portion, said second image forming station being disposed in a downstreammost position among said plurality of image forming stations, and said first image forming station being disposed upstream of said second image forming station and downstream of said cleaning blade with respect to a moving direction of said belt member; a detecting member configured to detect the first adjustment toner image and the second adjustment toner image, at a position opposing said belt member; a changing portion configured to change image forming conditions of said image forming stations on the basis of a result of detection of said detecting member, and a controller configured to control said first image forming station and said second image forming station such that both the first adjustment toner image and the second adjustment toner image are formed on said belt member within an area between toner images which are sequentially transferred onto recording materials, and the first adjustment toner image overlaps the second adjustment toner image with respect to a width direction of said belt member transverse to the moving direction of said belt member, and the second adjustment toner image in the area reaches said cleaning blade before the first adjustment toner image in the area reaches said cleaning blade.