| 摘要 |
PROBLEM TO BE SOLVED: To provide an inkjet printing head which maintains a high efficiency characteristic by being prevented from directly receiving ink feeding pressure although being heated by both side faces of a heater, and which can elongate the life of the heater. SOLUTION: The inkjet printing head is equipped with a substrate 110 which has ink feeding holes for feeding ink stored in a cartridge 10, a passage layer which forms an ink chamber 124 to communicate with the feeding holes, a nozzle plate 126 with at least one nozzle 128 for discharging the ink in the ink chamber to the outside, at least one heater 118 which is located adjacent to an inner wall of the ink chamber 124 and has front and rear faces disposed in contact with the ink in the ink chamber 124, and at least one lead electrically coupled to the heater 118. Both faces of the heater 118 are heated through contact with the ink, so that the thermal efficiency can be enhanced. COPYRIGHT: (C)2006,JPO&NCIPI
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