| 摘要 |
PROBLEM TO BE SOLVED: To sure transmit rotating driving force without fixing a roller main body and a center core by an adhesive agent, to achieve a firm fixing structure and to prevent contamination caused by outflow of a solvent of the adhesive agent. SOLUTION: A hollow core space having a square cross-section is formed in a sponge-shaped roller main body having water absorbing action, and the center core having the square shape same as the core space is inserted fixedly to the core space. COPYRIGHT: (C)2009,JPO&INPIT
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