| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jetting head, liquid jetting head unit and liquid jetting apparatus, which improves print quality by heating liquids in all pressure generating chambers to substantially uniform temperature to equalize liquid jetting characteristics.SOLUTION: The liquid jetting head includes: a liquid passage having the pressure generating chamber 11 communicated with a nozzle opening 13 for jetting a liquid and a first liquid chamber 18 arranged on one end side of the pressure generating chamber 11, to which a plurality of the pressure generating chambers 11 are communicated; a pressure generator 16 for discharging the liquid from the nozzle opening 13 by generating a pressure change in the pressure generating chamber 11; a heater 42 for heating a liquid on an upstream side of the pressure generating chamber 11 in the liquid passage; a second liquid chamber 20 arranged on the other end side of the pressure generating chamber 11; and a circulation passage 21 formed between a pressure generating chamber group constituted by one or more the pressure generating chamber 11, which connects the first liquid chamber 18 with the second liquid chamber 20. |
