| 摘要 |
An image forming apparatus comprises: a plurality of image forming means 7 arranged along a line, which include image carriers and developing means for developing latent images formed on the image carriers, respectively; and an exposure means 6 which emits laser beams for exposure to form latent images on the respective image carriers, wherein the exposure means 6 comprises a plurality of laser beam sources to be modulated according to image data corresponding to the image carriers 17, a common polygon mirror 21 which is arranged horizontally or vertically and in which laser beams from the laser beam sources are reflected at a common reflection facet of the polygon mirror 21 and are thus deflected, and optical paths for deflecting the laser beams in non-parallel with each other toward the respective image carriers 17. The apparatus further comprises a recording means which transmits toner images developed on the image carriers 17 to superpose and record the toner images; and a fixing means 40 for fixing the recorded toner images. The heat at the bearing of the polygon mirror is reduced so as to reduce the fluctuation in temperature of the exposure means, thereby achieving the formation of high quality images. <IMAGE>
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