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Image forming apparatus with pulse width modulated laser driver

  • US 5,742,323 A
  • Filed: 02/04/1993
  • Issued: 04/21/1998
  • Est. Priority Date: 02/06/1992
  • Status: Expired due to Term
First Claim
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1. An image processing apparatus comprising:

  • gradation processing means for processing gradation data to generate a modulation signal for modulating a beam emitted from a light source;

    bias current setting means for variably setting a bias current which is supplied to said light source; and

    condition setting means for setting a condition of said gradation processing means to correct a rising characteristic of said light source which varies depending upon the bias current variably set by said bias current setting means.

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