Patent ID: 6310681
Filing Date: 2001-10-30
Classification: G03B,G06K,H04N

Abstract:
An image forming apparatus that forms an image on an object by causing the object to be scanned by a light beam modulated in correspondence with an image to be formed at a timing synchronized with a pixel clock, comprising:a frequency controller that designates an overall recording magnification of the image along a scanning direction of the light beam and a partial recording magnification of the image along the scanning direction, and which, while the light beam is made to undergo a first scanning, changes a pixel clock frequency with a scope of change corresponding to the designated partial recording magnification by using as a reference a frequency corresponding to the overall recording magnification; anda modulation controller that designates a recording starting position of the image along the scanning direction of the light beam, and which controls the modulation of the light beam so that the recording of the image by the light beam is started from the designated recording starting position.