Importance

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Abstract

This invention discloses a printing apparatus and printing method for shortening the print data transfer time in thinning and driving nozzles in high-speed printing, multipass printing, or the like. In thinning and driving nozzle blocks, a printer main body transmits data representing a print mode, and print data corresponding to nozzles to be used. In a printhead, a shift clock generator generates a shift clock shortened in period in accordance with the thinning ratio, and a shift register stores the print data in correspondence with the clock. Print data corresponding to the printing elements to be used are repetitively stored in areas corresponding to printing elements not to be used.

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First Claim