| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To simply suppress decrease of the reproducibility of an image caused by a positional gap of a focal point of an exposure means to the surface of a photoreceptor. <P>SOLUTION: The image forming apparatus forms an image by sticking a toner to an electrostatic latent image formed on the surface of the photo-sensitive drum by the LED head that exposes the surface of the photo-sensitive drum by a plurality of LEDs on the basis of binary image data. When it is determined that the position of the focal point of the LED head is not normal in the apparatus (S104: YES), the binary image data are generated using a dither matrix for abnormalities, which has a threshold value set so that a low-density image is expressed dark and a high-density image is expressed light (S106). <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
