| 摘要 |
PROBLEM TO BE SOLVED: To provide a flexible printed wiring board in which sufficient joining strength with an external wiring is acquired and the part joined to the external wiring is prevented from generating heat during energization, and a liquid injection head. SOLUTION: The flexible printed wiring board 1 comprises an insulating substrate 2 and a wiring pattern 3 which is provided at least on one surface of the insulating substrate 2 and constituted at least by one wiring 4. The liquid injection head has the flexible printed wiring board. The wiring 4 comprises a connection part 5 electrically connected to the external wiring 200 and a non-connection part 6 which is the part other than the connection part 5 and extended from the connection part 5. The end part on the connection part 5 side of the non-connection part 6 acts as a thermal diffusion reducing part 7 which reduces diffusion of the heat, given to the connection part 5 when the connection part 5 is heat-joined to the external wiring 200, to the non-connection part 6 side. COPYRIGHT: (C)2006,JPO&NCIPI
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