| 摘要 |
PROBLEM TO BE SOLVED: To reduce a region of stagnation near a wall at a flow end of a common ink channel while a flow velocity decrease of ink flowing into an opening of an ejector at the flow endmost of the common ink channel is prevented, and also to enable high-density arrangement of nozzles. SOLUTION: The wall 14A at the flow end of the first common ink channel 14 is inclined to a channel center line 14C, and the opposed flow end wall 14A is made nearly parallel. Moreover, the openings 20 of ink supply channels 14 of the ejectors 60 are arranged at a leading end 14B side of the flow end wall 14A. Accordingly, the opening 20 at the flow end is separated by a suitable distance from the wall 14A. While the opening 20 positioned at the flow end of the first common ink channel 14 and the wall 14A at the flow end of the first common ink channel 14 are separated by the suitable distance, the first common ink channels 14 can be arranged in an array with the walls 14 faced to each other. COPYRIGHT: (C)2005,JPO&NCIPI
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