| 摘要 |
PURPOSE: A printer and printing method a data storage medium carrying a computer-readable program achieving this printing method is provided which drives plural printing elements during bidirectional movement and achieves high speed printing. CONSTITUTION: A printer and printing method suitable for high speed multicolor printing. A paper transport section(112) advances the printing medium(113), and a print head(110) prints text or graphics on the printing medium by driving printing elements corresponding to a plurality of colors. A transport unit(111) moves the print head orthogonally to the direction in which the printing medium travels. A plurality of image buffer units(109) store information indicating where the printing elements are driven. A logic device(102) performs a logic operation on information read from image buffer units to detect whether at least one of the printing elements is driven at a particular dot column position. A logic operation results memory(114) stores the logic operation results correlated to a print head position. Using the information stored in the logic operation results memory(114), a print head movement range calculator determines the range of print head movement, and a movement.
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