Patent ID: 7559618
Filing Date: 2009-07-14
Classification: B41J

Abstract:
1. An inkjet image forming apparatus, comprising: a print head unit having a plurality of nozzles extending along a first axis thereof and to reciprocate over a print medium; and a controller to control the print head unit to perform a first printing operation to sequentially eject ink from the plurality of nozzles in a line in a first direction along the first axis, and to control the print head unit to perform a second printing operation to sequentially eject ink from at least a first block of the plurality of nozzles and at least a second block of the plurality of nozzles in the line in the first direction along the first axis, wherein the controller controls the print head unit to print from a first end thereof to a second end thereof during the first printing operation in the first direction, and controls the print head unit to print using the at least one first block which is disposed closest to the second end of the print head unit and then the at least one second block which is disposed close to the first end of the print head unit in the first direction.