Patent ID: 9104132
Filing Date: 2015-08-11
Classification: G03G

Abstract:
1. An image forming apparatus that forms an image by forming a latent image on a charged photosensitive member and adhering toner to the latent image, the apparatus comprising: an exposure device that forms a latent image by illuminating the charged photosensitive member with a light generated based on a driving signal; and a signal generating unit that stores information on a plurality of dither matrices preset in correspondence with a density level of the toner to be adhered to the photosensitive member and converts input image data based on the dither matrices to generate the driving signal; wherein the signal generating unit stores information on a first dither matrix corresponding to a first density level and a second dither matrix corresponding to a second density level higher than the first density level; and wherein the first dither matrix includes a minute exposure area, at predetermined coordinates, in which the exposure device is caused to emit light to attain a potential of the photosensitive member at which no toner adheres to the photosensitive member; and the second dither matrix includes a normal exposure area, at a position corresponding to the predetermined coordinates in the first dither matrix, in which the exposure device is caused to emit light to attain a potential of the photosensitive member at which toner adheres to the photosensitive member.