| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving coil used for a simultaneously two position hammering hammer pin driving element for a dot impact type line printer capable of miniaturizing the conventional simultaneously two position hammering hammer pin driving element, and reducing the power supply to the driving coil while maintaining the driving efficiency, a coil bobbin for the driving coil, and a winding method for the coil bobbin. SOLUTION: The top end side of a straight body 23 of a driving coil 2 is formed as a narrow diameter 22 with the diameter narrowed stepwise. Furthermore, a projection 4 made of a thermally plasticizable material is provided at an outgoing line passage position of a supporting trunk 31 of a coil bobbin 3 so that the leader line 92 is fixed by heating and softening the projection, while being supported along the projection after finishing a winding operation to the coil bobbin. COPYRIGHT: (C)2003,JPO
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