Patent ID: 6547358
Filing Date: 2003-04-15
Classification: B41J

Abstract:
An ink jet printing apparatus using a print head on which ejection openings capable of forming print dots by ejecting inks on a printing medium are arranged, and a treatment liquid head on which ejection openings capable of forming treatment liquid dots by ejecting a treatment liquid for insolubilizing or coagulating a color material in the ink are arranged, said print head and said treatment liquid head being scanned relatively to the printing medium in a direction different from a direction of arrangement of the ejection openings, said apparatus comprising:means for converting data continuing in a direction corresponding to the relative scanning as data for print dots to be formed on the printing medium into data in a direction corresponding to the arrangement direction of said ejection openings means for generating forming position information of the treatment liquid dots on the printing medium corresponding to the data for print dots; and control means for processing the data conversion by said converting means and the generation of the treatment liquid dot forming position information by said generating means, in a same sequence.