Patent ID: 6607261
Filing Date: 2003-08-19
Classification: B41J

Abstract:
A printing apparatus, comprising:a print head having a plurality of nozzle groups, each nozzle group including a plurality of nozzles configured to eject ink to create dots on a surface of a printing medium at a predetermined dot creating timing during a forward and backward main scan and having a predetermined common condition relating to ink ejection; a timing specification unit configured to input an instruction to change the dot creation timing during the main scan with regard to each of at least two nozzle groups selected among said plurality of nozzle groups; an adjustment unit configured to adjust the dot creation timing with regard to said each nozzle group based on the instruction input from the timing specification unit; and a drive control unit configured to drive said each nozzle group at the adjusted dot creation timing during the main scan so as to create the dots, wherein said adjustment unit defines a specific nozzle group having an earliest dot creation timing among said at least two nozzle groups as a standard and adjusts the dot creation timing of another nozzle group relative to the standard.