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Color compensating method of color image and color image generating apparatus

  • US 5,838,465 A
  • Filed: 12/01/1995
  • Issued: 11/17/1998
  • Est. Priority Date: 12/02/1994
  • Status: Expired due to Term
First Claim
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1. A color correcting method for a color image generating apparatus for overlapping materials of 3 or 4 colors to obtain a multicolor image, said method comprising steps of:

  • setting a predetermined relationship between a first test stripe of a first color and a second test stripe of a second color to be printed, said predetermined relationship providing a reference for determining color drift in said apparatus;

    printing a test chart for determining whether color drift exists in said apparatus, said test chart including at least one 2-color combination of 2 of said 3 or 4 colors of the first test stripe of said first color and the second test stripe of said second color,determining a relationship between the first test stripe and the second test stripe in the at least one 2-color combination; and

    if the relationship between the first test stripe and the second test stripe in the at least one 2-color combination does not correspond to said predetermined relationship, controlling a record start position of said image generating apparatus in a main-scan direction and a record start position in a sub-scan direction to correct the relationship between the first test stripe and the second test stripe in the at least one 2-color combination to said predetermined relationship to thereby reduce color drift in said apparatus.

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