Patent ID: 7417652

Claim:
An image forming apparatus comprising: a beam generator for generating a beam; a scanning unit for recording images on a photosensitive member by scanning the images with the beam generated from the beam generator; a speed control unit for changing the magnification of the images to be recorded on the photosensitive member by controlling the scanning speed of the scanning unit; a carrier on which the images formed on the photosensitive member are transferred to a recording medium, and a conveying member for conveying the recording medium; a pattern control unit for forming pattern images for correcting target images at a second scanning speed on a region between a first region on the carrier, on which the images recorded at a first scanning speed are formed, and a second region, on which the images recorded at the second scanning speed different from the first scanning speed are formed; a detection unit for detecting the displacement in image forming position by reading the formed pattern images; and a correction unit for correcting the image forming position of the target images on the basis of the detected displacement at the second scanning speed.