Mipox has the know-how of the circumferential cleaning (making end face shape) use the disk internal circumference of the aluminum & glass substrate. Because chemfer shape precision is lacking by the conventional brush method, a tape polishing method attracts expectation. This is most suitable machine to prevent residual substance thing scattering from the outer edge at the time of the Drive assembling. (The point where outer edge Dub-Off evasion being difficult, the chipping removal are insufficient becomes the fault by the brush way in particular) “Patent applied”