| 摘要 |
PROBLEM TO BE SOLVED: To facilitate its manufacture and driving control in an inkjet head which uses a plurality of kinds of ink and makes an ink jet amount of at least one kind of ink different from those of the other. SOLUTION: In the inkjet head, an actuator 3 includes a diaphragm 19 set faced to each pressure chamber 35, a plurality of deformation parts A1 each deformable to move a part corresponding to the pressure chamber 35 of the diaphragm 19, and deformation restrainers 37 and 38 disposed in a predetermined range to restrain deformation of the diaphragm 19 while leaving a peripheral part of a region at least on one surface of the region corresponding to the pressure chambers 35 of the diaphragm 19. Areas of the deformation parts A1 are the same for all the kinds of ink. A deformation restraint area S2 to the diaphragm 19 of the deformation restrainer 37 corresponding to at least one kind of ink among the plurality of kinds of ink is made different from a deformation restraint area S3 to the diaphragm 19 of the deformation restrainer 38 corresponding to the other kind of ink. COPYRIGHT: (C)2008,JPO&INPIT
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