| 摘要 |
The apparatus has a pressure roller 3, which pressure roller 3 is supported, with capacity for rotation, in an orifice 8 of the pressure roller 3 for inserting the operational shaft 2 formed with a sufficiently large internal diameter to accommodate the shaft of the operational rod 2 and there being a cavity 10 in the orifice 8 formed between the rod 2 and the inner peripheral surface of the pressure roller 3 on the operational rod 2. In this apparatus, although the pressure roller 3 is deformed elastically, the deformation is absorbed by the cavity 10 and the rolling of the roller 3 is not obstructed. In addition, it is possible to use soft material which provides a comfortable touch on the body for the pressure roller 3, providing improved touch during use. <IMAGE>
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