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IMAGE FORMING APPARATUS

  • US 20080193165A1
  • Filed: 02/08/2008
  • Published: 08/14/2008
  • Est. Priority Date: 02/14/2007
  • Status: Abandoned Application
First Claim
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1. An image forming apparatus that is controlled so as to transfer a toner image formed on the peripheral surface of a photoreceptor drum to a recording medium by electrophotography, comprising:

  • an image forming portion including the photoreceptor drum on which a toner image is formed based on the electrostatic latent image formed thereon;

    a developing portion having a developing roller for supplying toner to the photoreceptor drum;

    a recording medium conveyor for conveying a recording medium toward the photoreceptor drum;

    a controller for controlling the drive of the recording medium conveyor; and

    a transfer portion for transferring the toner image formed on the photoreceptor drum to the recording medium being conveyed, characterized in thatthe recording medium conveyor conveys the recording medium in such a manner that the leading end of the recording medium collides with the photoreceptor drum;

    the controller includes;

    an eccentricity detector for detecting the eccentric variation of the peripheral surface of the photoreceptor drum; and

    a phase detector for detecting the rotational phase of the photoreceptor drum; and

    the controller corrects the timing of driving the recording medium conveyor based on the eccentric variation detected by the eccentricity detector and the rotational phase detected by the phase detector.

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