Method and apparatus for burnishing flexible recording material
AssigneeDysan Corporation
InventorsC. Norman Dion, Tom Y. Idemoto
Life of this patent
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Abstract
A method and apparatus for treating the recording layer of flexible recording elements to remove protruding agglomerated particles formed during the fabrication process and to provide an extremely smooth surface finish on the order of 1.8AA or less. Several embodiments are disclosed for treating both annular recording discs and roll type recording media. The method comprises burnishing the recording layer surface with a hard smooth abrasive member while supporting the flexible recording element on a resilient backing surface and observing key parameters.
Claims26
A method of treating the recording surface of a flexible recording element to remove protruding agglomerates and improve the surface smoothness, said method comprising the steps of:
- a. supporting said flexible recording element on a substantially resilient compressible support surface;
- b. translating said recording surface of said recording element past an abrading region at a first rate;
- and
- c. abrading said recording surface during translation thereof past said abrading region for a predetermined period with an abrasive element having substantially less resiliency than said compressible surface by moving the surface of said abrasive element past said abrading region at a second rate different from said first rate while pressing said recording surface against said support surface with said abrasive element with sufficient force to compress said support surface at said abrading region.
An apparatus for treating the recording surface of a recording element to remove protruding agglomerates and improve surface smoothness, said recording element having a flexible substrate with front and back surfaces, said apparatus comprising:
- a resilient compressible backing means for providing a substantially resislient yielding support surface for one of said surfaces of said flexible recording element;
- an abrasive element adapted to be placed in surface contact with said recording surface at an abrading region for pressing said recording element against said resilient backing means with sufficient force to compress said backing means at said abrading region, said abrasive element having substantially less resiliency than said backing means;
- means for providing relative movement between said abrasive element and said recording surface and;
- means for providing said force to compress said backing means.
Dependencies are inferred from the claim text.