| 摘要 |
PROBLEM TO BE SOLVED: To reduce a positional gap of dots formed in black ink. SOLUTION: The inkjet head 41 has a first black nozzle array BK1, a second black nozzle array BK2, and a color nozzle array CL. The first black nozzle array BK1 has a plurality of nozzles Nz formed by a predetermined pitch in a conveyance direction of a medium, ejecting the black ink. The second black nozzle array BK2 has a plurality of nozzles Nz formed by the predetermined pitch in the conveyance direction and formed at positions shifted in the conveyance direction to the plurality of nozzles Nz that constitute the first black nozzle array BK1, which ejects the black ink. The color nozzle array CL has a plurality of nozzles Nz formed by the predetermined pitch in the conveyance direction and matched in position in the conveyance direction with the plurality of nozzles Nz that constitute the second black nozzle array BK2. The color nozzle array CL ejects color ink of different colors by every group adjacent in the conveyance direction. COPYRIGHT: (C)2008,JPO&INPIT
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