Patent ID: 7822365
Filing Date: 2010-10-26
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a first image forming portions group including a plurality of image forming portions, which develops latent images on a plurality of image bearing members, respectively, with toners including yellow toner, magenta toner, cyan toner and black toner, a second image forming portions group including a plurality of image forming portions, which develops latent images on a plurality of image bearing members, respectively, with toners having colors different from yellow toner, magenta toner, cyan toner and black toner, an intermediate transfer belt on which images formed by the first image forming portions group and the second image forming portions group are transferred; tension members between which the intermediate transfer belt is stretched, a first exposing member having a plurality of laser sources provided for the image bearing members of the second image forming portions group and a first rotary polygon mirror that scans the image bearing members of the second image forming portions group, respectively, with laser beams from the laser sources, a second exposing member having a plurality of laser sources provided for the plurality of image bearing members of the first image forming portions group and a second rotary polygon mirror that scans the image bearing members of the first image forming portions group, respectively, with laser beams from the plurality of laser sources of the second exposing member,