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Image forming apparatus and image reading device for use in the apparatus

  • US 20010019428A1
  • Filed: 01/05/2001
  • Published: 09/06/2001
  • Est. Priority Date: 01/17/2000
  • Status: Active Grant
First Claim
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1. An image forming apparatus for forming an image on a recording material, the image forming apparatus comprising:

  • (a) a writing section for writing according to image data;

    (b) an oscillator for generating a synchronizing clock signal synchronized with a predetermined frequency;

    (c) a spreading clock generator for spreading a band of a reference clock which is synchronized with the predetermined frequency, and generating spreading clock signals;

    (d) a plurality of control circuits for controlling the image forming apparatus or each section of the image forming apparatus including a writing control circuit for controlling the writing section, wherein at least one control circuit of the control circuits other than the writing control circuit is driven by the spreading clock signals, and the writing control circuit is driven by the synchronizing clock signal.

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