Patent ID: 6315378
Filing Date: 2001-11-13
Classification: B41J

Abstract:
A printing apparatus using a printing head in which a plurality of printing elements are arranged, to perform printing on a printing medium based on print data assigned to a plurality of printing elements comprising:deviation calculating means for, for a plurality of printing elements, calculating a deviation amount in an arrangement direction of the plurality of printing elements based on a predetermined amount of print data, the deviation of printing elements being caused by thermal expansion of the printing head; andassigning means for, for each of a plurality of printing-element groups which are established by distinguishing the plurality of printing elements by respective predetermined deviation amounts as references on a basis of the deviation amount of each of said plurality of printing elements calculated by said deviation calculating means, shifting the print data to be assigned to other printing elements by an amount corresponding to the predetermined deviation amount of said printing element group and performing assignments of the shifted print data to the printing elements in said group.