| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jet head in which the yield can be improved by reducing the number of components which are to be thrown when cleaning for removing foreign matter in a fluid channel is carried out. SOLUTION: An ink introduction needle 2 has a housing recessed section 45 which is recessed toward a side of an introduction hole 13 (upstream side) of a needle fluid channel 12 to be disposed at a periphery of a downstream side opening of the needle fluid channel 12. A filter 3 is housed in the housing recessed section, and an inlet opening periphery of an ink supply channel 17 at an attachment face 16 of an introduction needle unit 4 is projected toward the housing recessed section 45 of the ink introduction needle 2 in the attached condition to form a projection opening section 48. A seal ring 20 is fitted to the periphery of the projection opening section 48, and then the projection opening section 48 is disclosed in the housing recessed section 45. The ink introduction needle 2 is attached to the attachment face of the introduction needle unit 4 in a condition that the seal ring 20 is pressed against the side of the introduction needle unit 4. COPYRIGHT: (C)2007,JPO&INPIT |
