| 摘要 |
<P>PROBLEM TO BE SOLVED: To fit a flange to both ends of a core to prevent the flange from coming out easily from both the ends of the core, and to facilitate the positioning of both the ends of the core with the flange. <P>SOLUTION: Bobbins 2, 3 for thermal transfer sheets include a cylindrical core 20, and a pair of flanges 10 fitted to the inner peripheral surface at both the ends 20a, 20b of the cylindrical core 20, respectively. Notches 21 are formed at the ends 20a, 20b of the cylindrical core 20, and protrusions 15 engaged with the notches 21, and ribs 16 abutting against the inner peripheral surface at the ends 20a, 20b of the cylindrical core 20 are provided on the outer peripheral surface at the fitting part 13 of the flanges 10. The protrusion 15 is tapered toward the tip 15a, and each of the ribs 16 has a large diameter part 16a abutting against the inner peripheral surface at the ends 20a, 20b of the cylindrical core 20, and an inclined portion 16b having a height decreasing gradually toward the tip 16c. <P>COPYRIGHT: (C)2013,JPO&INPIT |
