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Method of compensation for the effects of thermally-induced droplet size variations in ink drop printers

  • US 6,213,579 B1
  • Filed: 11/24/1998
  • Issued: 04/10/2001
  • Est. Priority Date: 11/24/1998
  • Status: Expired due to Term
First Claim
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1. An image processing apparatus for use in a binary printer, comprising:

  • a temperature estimation unit configured to estimate a temperature of a print head; and

    an image adjustment unit configured to receive the estimated print head temperature from the temperature estimation unit and to receive image data, wherein the image adjustment unit is also configured to determine the number of dots to be printed by the print head based upon the estimated print head temperature and the image data;

    wherein the image data comprises probabilities of printing dots at various pixel locations, and wherein the adjustment unit is configured to adjust the probabilities based upon the estimated temperature and to use the adjusted probabilities to determine the number of dots to be printed.

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