Patent ID: 7542058

Claim:
An image forming apparatus for forming a color image on the basis of arbitrary image information for the color image, the apparatus comprising: (a) an image forming device having an image forming member for forming the color image through a superposition of component color images on the basis of the arbitrary image information; (b) a detector for detecting a position of a color image formed by the image forming device; and (c) a controller for controlling the image forming device on the basis of an output of the detector, wherein the controller controls the image forming device to form at least mark images or reversed mark images which are reversed from the mark images for a registration of component color images according to a condition of use of the image forming device, and controls the image forming device to adjust forming positions of component color images on the basis of a position detection of the mark images or those defined by void portions which are not filled with color toner particles, of the reversed mark images formed by the image forming device.