IMAGE FORMING APPARATUS

摘要

An incidence angle of laser light with respect to a photosensitive member in a main-scanning direction is different depending on an exposure position. Hence, the spot shape of the laser light on the photosensitive member is different in the main-scanning direction.;A filter coefficient is changed in the main-scanning direction, and image data is corrected with the filter coefficient.

主权项

1. An image forming apparatus, comprising:
a light source configured to emit light beam for exposing a photosensitive member to light; a deflecting configured to deflect the light beam so that the light beam scans the photosensitive member; an optical configured to guide the light beam deflected by the deflecting unit to the photosensitive member; a data generating unit configured to generate pixel data corresponding to each pixel included in an output image; an outputting unit configured to output correction data for correcting unevenness of a potential distribution of an electrostatic latent image centered at a target pixel formed on the photosensitive member by exposure of the photosensitive member to the light beam in a scanning direction in which the light beam scans the photosensitive member, the correction data corresponding to a position of the target pixel in the scanning direction, the outputting unit outputting the correction data being indicative of an amount of change in potential at the position of the target pixel caused by exposure of a surrounding pixel located around the target pixel to the light beam; a correcting unit configured to correct pixel data of the target pixel on the basis of the correction data and the pixel data of the target pixel; and a control unit configured to control the light source on the basis of the pixel data of the target pixel corrected by the correcting unit, to form the target pixel.