| 摘要 |
The present invention makes it possible to continuously print for a long time with no print interruption and provides simple control for making a preliminary-ejected image pattern difficult to be visually recognized when paper preliminary-ejecting is performed on a printer that uses recording heads each having plural linearly-arranged ink-ejecting nozzles. To do so, a preliminary-ejection execution counter 303 is provided for counting the number of preliminary-ejection executions to determine nozzles, from which ink is ejected at each preliminary-ejection time, when ink is periodically ejected onto a recording medium from one or more nozzles at a time in a preliminary manner at a predetermined time during the image data recording operation through recording heads 509 . The nozzles from which ink is ejected are determined based on a preliminary-ejection nozzle select value generated by exchanging the bit positions of the count value of the preliminary-ejection execution counter.
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