| 摘要 |
PROBLEM TO BE SOLVED: To suppress the ejection of ink out of an ink ejection port from becoming unstable due to the shortage of ink to be supplied into a pressure chamber. SOLUTION: The inkjet head 1 is equipped with an upper channel unit 2, a piezoelectric actuator 3 fixed to the lower face of the upper channel unit 2, and a lower channel unit 4 fixed to the lower face of the piezoelectric actuator 3. Four common ink chambers 76 are formed in the upper channel unit 2. Four common ink chambers 6, a plurality of the pressure chambers 10 and a plurality of nozzles are formed in the lower channel unit 4. A plurality of individual ink channels 15 leading from the common ink chambers 6 through the pressure chambers 10 to the nozzles 8, and a plurality of individual ink channels 16 leading from the common ink chambers 76 through the communicating holes 66, 67 formed in the piezoelectric actuator 3 and the pressure chambers 10 to the nozzles 8 are formed in the inside of the inkjet head 1. COPYRIGHT: (C)2007,JPO&INPIT
|
