Patent ID: 6508529
Filing Date: 2003-01-21
Classification: B41J

Abstract:
A method for reducing cockle growth on a media sheet which moves along a media path through a print zone of an inkjet printing apparatus, the apparatus including an inkjet printhead having a plurality of inkjet nozzles which eject ink to print onto a media sheet at a print speed, the print zone located adjacent to the plurality of nozzles, the method comprising the steps of:receiving data to the inkjet printing apparatus at an incoming data rate; receiving the media sheet at a roller which stabilizes the media sheet along the media path relative to a first surface, the roller located upstream along the media path prior to the print zone; while the incoming data rate is at least a great as the print speed, ejecting ink from a first plurality of the inkjet nozzles onto a portion of the media sheet located within the print zone, wherein the first plurality of inkjet nozzles span a first print swath length along a direction of media sheet travel, the first print swath length extending from a first location within the print zone; detecting that the incoming data rate is less than the print speed; in response to the step of detecting, ejecting ink from a second plurality of the inkjet nozzles onto a portion of the media sheet located within the print zone, wherein the second plurality of inkjet nozzles span a second print swath length along a direction of media sheet travel which is less than the first print swath length, and wherein the second print swath length extends from a second location within the print zone.