Printing system, method of printing, and recording medium to realize the method

摘要

The structure of the present invention effectively prevents banding and enables high-quality printing in a printer which carries out secondary scans in the interlacing manner and thereby prints an image. The printer of the present invention has a print head with a plurality of nozzle arrays formed thereon. Each nozzle array includes a plurality of nozzles arranged at predetermined pitches in the secondary scanning direction. The printer records an image by the interlacing method using part of the nozzles in each nozzle array. The nozzle block in the nozzle array used for formation of dots is changed in every primary scan, and the amount of feed in secondary scan is varied with the change of the nozzle block. Both the nozzle block and the amount of secondary scan are periodically changed in preset sequences. The variation in amount of secondary scan reduces the banding due to the accumulated errors in secondary scans.