Patent ID: 7586512
Filing Date: 2009-09-08
Classification: G03G

Abstract:
1. An image forming apparatus that forms an image by two-dimensionally fast and slow-scanning and exposing with light that has been modulated in accordance with image data representing an image and visualizing an electrostatic latent image with toner, the apparatus comprising: a calculating unit that divides an image region in a fast-scanning direction into a plurality of regions and calculates image data amounts to be used for image formation in the image data per each of the plurality of regions; and a correcting unit that corrects, on the basis of the calculation result of the calculating unit and each of correction coefficients in consideration of a distance between a position where the toner is supplied to a developing roll and a position where the toner is supplied to each of the plurality of regions, unevenness of density in the fast-scanning direction in the toner image, wherein the correcting unit includes a density decrease calculating unit that calculates, from the calculation result of the calculating unit and each of the correction coefficients, a density decrease distribution in the fast-scanning direction of the toner image, and wherein the density decrease calculating unit calculates corrected image data amount counts per each of the plurality of regions by using the correction coefficients per each of the plurality of regions and calculates the density decrease distribution in accordance with the corrected image data amount counts.