Data processing method of printing apparatus and the printing apparatus

摘要

Provided is a data processing method of a printing apparatus for printing a multi-color image on a printing medium by each of printing heads for at least two colors while transporting the printing medium relative to the printing heads in a paper-feed direction. The method includes a skew detecting step of detecting a degree of skew of the printing medium; a correction printing-data generating step of shifting print data from a printing unit for performing printing in a direction orthogonal to the paper-feed direction in accordance with the degree of skew to generate correction printing-data, the printing unit having a first printing head disposed upstream in the paper-feed direction and a second printing head spaced away from the first printing head downstream in the paper-feed direction; and a printing step of performing printing on the printing medium with the printing unit in accordance with the correction printing-data.

主权项

1. A data processing method of a printing apparatus for printing a multi-color image on a printing medium by a first printing head and a second printing head while transporting the printing medium relative to the first printing head and the second printing head in a printing medium-feed direction, the first printing head being disposed upstream of the printing medium-feed direction and the second printing head being spaced away from the first printing head and being disposed downstream of the paper-feed direction, the method comprising:
a skew detecting step of detecting a degree of skew of the printing medium; a correction printing-data generating step of shifting print data for performing multi-color image printing for every printing color in a locatable area in a direction orthogonal with respect to the medium-feed direction in accordance with the degree of skew to generate correction printing-data, the locatable area being set for locating the print data for the every printing color; and a printing step of performing printing on the printing medium with the first printing head and the second printing head in accordance with the correction printing-data, wherein in the correction printing-data generating step, the locatable area being set wider than a locatable area with no skew, and a shift amount of the first printing head being larger than a shift amount of the second printing head in the printing medium-feed direction and the direction orthogonal with respect to the printing medium-feed direction.