| 摘要 |
PROBLEM TO BE SOLVED: To efficiently perform the radiation in a mold without performing the eccentricity or correction of a core in the mold. SOLUTION: A paper feed roller 31 has an outer edge part 32 and a shaft part 33 and is constituted so that an almost circular end plate 30 is integrally provided on one end side A of the outer edge part 32 and the shaft part 33 while one end side A is almost closed by the end plate 30 and the other end side B of the outer edge part 32 and the shaft part 33 is opened. In a case that an almost C-shaped reduced thickness part 34 is formed between the outer edge part 32 and the shaft part 33 and both ends of the reduced thickness part 34 are formed as open parts 44 and 45, radiation slits 41, 42 and 43 are provided to the outer edge part 32 to efficiently perform the radiation in the core at the time of injection molding. COPYRIGHT: (C)2006,JPO&NCIPI
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