Patent ID: 7104871
Filing Date: 2006-09-12
Classification: B24B,B29B,B29L,G11B,Y02W

Abstract:
1. A one-step method of resurfacing an information bearing disc of the type having a protective surface overlying an information layer in which the protective surface has blemishes, said information layer extending from the peripheral edge of the disc to a center band, said method comprising; (a) positioning the disc on a first generally vertical shaft with the protective layer disposed downwardly; (b) positioning a resilient pad on a second shaft in parallel relationship with said first shaft with said resilient pad supporting an upwardly facing resurfacing material, said pad and resurfacing material being selected so the information layer overlaps the pad and resurfacing material extending from the periphery only to approximately the center band of the disc; (c) rotating said first and second shafts in opposite rotational directions at approximately the same speed; (d) providing a sump containing a polishing slurry; (e) applying the polishing slurry from the sump to the upwardly facing resurfacing material and collecting the fluid and removed material in the sump for recycling; and (f) continuing said rotation and application of fluid until at least a substantial portion of any blemish or scratch in the protective layer of the disc is removed.