INKJET PRINTER, PRINTING DATA PROCESSING METHOD AND PRINTING DATA PROCESSING PROGRAM

摘要

PROBLEM TO BE SOLVED: To improve a printing image quality by suppressing generation of banding. SOLUTION: Inkjet heads 7a and 7b are arranged in an in-line arrangement to a head unit 6 movable in a main scan direction A. A control part specifies effective nozzles 8b of the inkjet head 7a and effective nozzles 8b of the inkjet head 7b so that a nozzle array of the effective nozzles 8b in the inkjet head 7a and a nozzle array of the effective nozzles 8b in the inkjet head 7b may be arranged with a shift of a predetermined width W in a conveyance direction B each other, and carries out ejection control to each of the inkjet heads 7a and 7b by making printing data correspond to the specified effective nozzles 8b. Printing images printed by the inkjet heads 7a and 7b are located on positions mutually shifted by the predetermined width W in the conveyance direction B. A density difference between passes can be made small accordingly. COPYRIGHT: (C)2010,JPO&INPIT