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Adjustment method of dot printing positions and a printing apparatus

  • US 6,532,026 B2
  • Filed: 04/05/1999
  • Issued: 03/11/2003
  • Est. Priority Date: 04/03/1998
  • Status: Expired due to Term
First Claim
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1. A method of printing registration for processing for performing printing registration in a first printing and a second printing with respect to a printing apparatus for performing printing of an image by the first printing and the second printing with predetermined conditions of a dot forming position on a printing medium by using a printing head, said method comprising the steps of:

  • forming first patterns and second patterns, respectively, corresponding to a plurality of shifting amounts, the patterns being formed by the first printing and the second printing, and a direction of shifting of relative printing positions in the first printing and the second printing being different;

    measuring optical characteristics of each of the plurality of first patterns formed and optical characteristics of each of the plurality of second patterns formed; and

    acquiring adjustment value of conditions of a dot forming position between the first printing and the second printing based on an intersection point of a change characteristic of the measured optical characteristics of the plurality of first patterns and a change characteristic of the measured optical characteristics of the plurality of second patterns.

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