| 摘要 |
An ink jet printer comprises a color head having a plurality of nozzles arranged on a head carrier, each of the plurality of nozzles injecting color ink particles by the drive of a piezoelectric element; and a monochrome head having a plurality of nozzles arranged the head carrier, each of the plurality of nozzles injecting monochrome ink particles by the drive of a piezoelectric element. Within a single scanning of the head carrier, a control unit switches the printing mode between a color printing mode by the color head and a monochrome printing mode by the monochrome head, to thereby provide a control of printing. For the color-printing mode, a multivalued intensity mode is set, and for the monochrome-printing mode, a high-resolution mode is set, where the resolution of the monochrome head is integer times the resolution of the color head.
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