Information recording medium, information reproduction...

Details Information recording medium, information reproduction... Information recording medium, information reproduction...

2005-12-28

2009-10-13

Bernatz, Kevin M. (Department: 1794)

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

C428S064500, C430S270130

Reexamination Certificate

active

07601412

ABSTRACT:
A method for mass-producing a recording mark capable of being reproduced even below the diffraction limit in the information recording medium. A medium comprising: a substrate including a first material on the surface, and a second material formed on a first area on the substrate, and a third material at least whose surface energy or surface curvature are different from the second material, and the second material and third material possess at least different chemical or physical characteristics, and at least the surface energy or surface curvature of the third material are greater than the second material, moreover a region formed of the third material contains less than 20 percent of the second material, and the second or the third material can be melted for performing recording or reproduction, so that a recording mark can be produced that is capable of being read even below the diffraction limit in the information recording medium.

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patent: 6-295479 (1994-10-01), None
patent: 10-269627 (1998-10-01), None
patent: 2004-87041 (2004-03-01), None

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