| 摘要 |
PURPOSE:To make the positioning in the radial direction of a media always the same by pushing a torque transmission body to the external part by an oblique face simultaneously with the media being located in the rotary direction. CONSTITUTION:In order to locate a media 1 in the radial direction, the media 1 is pushed to the external part by adding not only the spring force G of the movable part 10a of a sheet spring 10 but also the component force of the force X generated on an oblique face 7a. The fitting accuracy of the torque transmission body 11 for the movable part 10a, the fitting accuracy to the holding base 8 of the sheet spring 10, the dispersion in the elastic force of the movable part 10a and the bad effect of the reduction in elasticity, etc., due to the elapsed variation of the movable part is therefore prevented. The positioning in the radial direction of the media 1 can thus be made always the same.
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