| 摘要 |
PCT No. PCT/JP96/00470 Sec. 371 Date Oct. 25, 1996 Sec. 102(e) Date Oct. 25, 1996 PCT Filed Feb. 28, 1996 PCT Pub. No. WO96/27188 PCT Pub. Date Sep. 6, 1996There is disclosed a method and apparatus for polishing a surface of a magnetic recording medium in which a magnetic layer surface of a magnetic tape is brought into contact with a polishing tape which is wound on a contact roll and travelled, and the magnetic tape and the polishing tape are travelled in opposite directions to polish the magnetic layer surface of the magnetic tape. In this invention, in surface polishing, a curvature of the contact roll at a position where the magnetic tape is brought into contact with the polishing tape at first is set to be 0.1 to 10 mm. In order to set the curvature of the contact roll at the position where the magnetic tape is brought into contact with the polishing tape at first to be 0.1 to 10 mm, for example, the curvature of the contact roll is continuously changed. More specifically, in consideration of the sectional shape of the contact blade, first and second curves which have different curvature radii are continuously formed from the supply side of the magnetic tape, and the curvature radius of the first curve is set to be smaller than the curvature radius of the second curve. Otherwise, a composite cylindrical roll having a shape obtained by combining a large-diameter roll and a small-diameter roll to each other is used.
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