Patent ID: 6595629
Filing Date: 2003-07-22
Classification: B41J

Abstract:
A continuous inkjet printer, comprising:a continuous print head having a row of ejection nozzles, the row of ejection nozzles including a plurality of ejection nozzles which are arranged to be located at a plurality of nozzle positions defined along a first predetermined direction, the row of ejection nozzles being located at a predetermined position along a second predetermined direction that is substantially perpendicular to the first predetermined direction, each ejection nozzle ejecting successive ink particles continuously in a third predetermined direction that is substantially perpendicular to both of the first and second predetermined directions, thereby allowing the ejection nozzle row to eject successive rows of ink particles continuously in the third predetermined direction; a conveying unit conveying a printing medium relative to the continuous print head in the second predetermined direction; a deflecting unit receiving successive groups of control data, and selectively deflecting the ink particles in the successive ink particle rows, based on the received successive control data groups, thereby selectively preventing the ink particles from reaching the printing medium; a judging unit receiving a print data group for one of the successive ink particle rows, and judging whether or not the print data group includes straight-line-end data indicative of an end portion of a straight-line that extends in the first predetermined direction; and a control data producing unit producing, when the print data group is judged to include the straight-line-end data at some nozzle position, deflection control data for deflecting an ink particle at the subject nozzle position in the subject ink particle row and producing first non-deflection control data for failing to deflect a first ink particle at the subject nozzle position in a first ink particle row that is different from the subject ink particle row.