Archival imaging medium and method therefor

Details Archival imaging medium and method therefor Archival imaging medium and method therefor

1998-05-15

2000-10-03

Gorgos, Kathryn

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

148512, 148525, 148903, 205139, 205153, 205206, 205224, 21912166, 283 88, 283 89, 283 94, 283109, 428143, 428148, 4284722, 428648, 428659, 428687, 430 10, 43027011, 430945, G11B 724, G11C 1304, B32B 1500, B42D 1510

Patent

active

061270504

ABSTRACT:
An archival medium, such as a compact disc, is made of a metal such as aluminum which is mechanically gained with particulate material under conditions that embed particulate material into the surface of the medium and visibly imageable by selective exposure to infrared laser radiation. A mechanically grained aluminum medium can also be anodically oxidized under conditions that do not impair the ability of the substrate to be laser imaged. The archival medium can be coated with opaque and transparent polymer coatings before or after imaging for security and/or protection. The coating can be a laser ablatable coating to provide a tamper-proof medium.

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H. Silman et al. Protective and Decorative Coating for Metals, Finishing Publications Ltd., Teddington, Middlesex, England, pp. 456-463, 1978, month of publication not available.

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