| 摘要 |
PURPOSE:To efficiently obtain a uniform polished surface, by pressing a magnetic disc and a polishing tape in their opposed position by jetting of pressurized air and rotating the magnetic disc to be driven so as to polish its magnetic surface. CONSTITUTION:Under a condition that a magnetic disc 1 rotates at a high speed by a driving mechanism, a device, blowing pressurized air of predetermined pressure from the first and the second air nozzle 4, 5 respectively to a polishing tape 3 and the magnetic disc 1, polishes a magnetic surface 1a to be finished. This polishing tape 3, being guided by guide rollers 7, 8 arranged in both sides of the first air nozzle 4, is intermittently fed so as to run in a direction opposite to the rotary direction of the magnetic disc 1. In this way, the device, blowing off dust of a magnetic material polished by the polishing tape 3 by the air from the air nozzles 4, 5 and causing no generation of a polishing stripe, enables the surface to be uniformly polished by the pressure of air. |
