| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jetting head which efficiently performs heat radiation of a driving circuit so as to achieve downsizing and cost reduction in the driving circuit, and further improves durability of the driving circuit so as to improve liquid jetting properties, and to provide a liquid jetting device. SOLUTION: The liquid jetting head includes: a pressure generation chamber 11 communicating with a nozzle opening 13 for jetting a liquid; a piezoelectric element 17 generating a pressure change in the pressure generation chamber 11; a case head 20 having a storage part 19 for storing the piezoelectric element 17; and a flexible printed circuit board 50 connected to the piezoelectric element 17 and mounted with a driving circuit 60 driving the piezoelectric element 17. The storage part 19 of the case head 20 is provided with a channel member 21 which holds the base end part of the piezoelectric element 17 and is thermally conductively connected with the driving circuit 60, the case head 20 is provided with a liquid introduction path 30 feeding a liquid to the pressure generation chamber 11, and the channel member 21 defines at least a part of the wall face of the liquid introduction path 30. COPYRIGHT: (C)2009,JPO&INPIT
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