Inkjet printing apparatus and check pattern printing method

摘要

A check pattern is printed which makes it possible to detect, with high precision, individual patterns corresponding to nozzles of a print head of an inkjet printing apparatus. More specifically, after an alignment mark is printed, ejection of an ink from the nozzles is stopped for a certain time. Because of this stoppage time, the concentration of a coloring material of the ink ejected from the nozzles increases, whereby the optical density of an analysis pattern which is printed later can be increased. In this manner, a scanner can read, with high precision, the patterns corresponding to the nozzles.

主权项

1. An inkjet printing apparatus comprising:
a first print head in which a plurality of nozzles for ejecting a first type ink are arranged in an arranging direction; a moving unit configured to move a printing medium with respect to the first print head in a moving direction crossing to the arranging direction; and an ejecting control unit configured to control ejecting the first type ink while moving of the printing medium by the moving unit so as to (i) eject the first type ink from a first number of the nozzles to print a first pattern to a first position of the printing medium in the moving direction, (ii) not eject the first type ink from the plurality of nozzles for a first period after the first pattern is printed, and (iii) eject the first type ink from a second number, which is larger than the first number, of the nozzles after the first period is elapsed, to print a second pattern to a second position of the printing medium which is positioned at upstream in the moving direction to the first position, wherein the temperature of the first type ink around the plurality of nozzles in the first period is 50° C. or more.