Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1990-09-14
1992-03-31
Kisliuk, Bruce M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51281R, 51281SF, 51 34C, 51327, B24B 100
Patent
active
050996185
ABSTRACT:
A digital recording disk, such as an audio or a video disk, has a central bearing area, a data medium layer having at least one data track thereon, and a protective layer covering a face of reading of said disk, said protective layer is provided with damages, causing disturbances during a reading operation. Said damages are repaired by removing the protective layer in a section between a central bearing area and a circumferential edge of said disk to a level at which disturbances during reading do not appear. Said removing of said protective layer is carried out in directions cutting across the data track path.
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IBM Technical Disclosure Bulletin, vol. 24, No. 2, Jul. 1981; "Rotary Burnish Head and System"; J. J. Hagopian; IBM Corp. 1981, pp. 993-994.
Kisliuk Bruce M.
Marlott John A.
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