| 摘要 |
PROBLEM TO BE SOLVED: To suppress staying of air bubbles in common paths connecting a plurality of common liquid chambers. SOLUTION: An inkjet head includes two pressure room groups 65 respectively containing a plurality of pressure rooms 45 for delivering liquid droplets from nozzles by fluctuation in pressure, common liquid chamber groups 61 respectively provided on pressure room groups 65 and containing the common liquid chambers 41 connected with a plurality of the pressure rooms 45 included in corresponding pressure room groups 65, liquid feeding openings 32b connected to one ends of respective common liquid chambers 41 and feeding liquid 41 to respective common liquid chambers, the common paths 63 extending from respective other ends of two common liquid chambers 41 and composed of two mutually connected connecting flow paths 43, and discharging openings 67 formed on the common paths 63 and opened to the outside. A curvature formed by both side faces of a partition walls 48 separating between two common ink rooms 41 and the connecting flow paths 43 is the same as or larger than the curvature of a circular arc using the width of the partition walls as a diameter. In addition, the common paths 63 are asymmetrically formed to an imaginary central face 66. COPYRIGHT: (C)2009,JPO&INPIT
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