Optical information medium and manufacturing method therefor

Details Optical information medium and manufacturing method therefor Optical information medium and manufacturing method therefor

1998-10-08

2000-09-12

Evans, Elizabeth

Stock material or miscellaneous articles

Circular sheet or circular blank

428 642, 428 644, 428 648, 428457, 428913, 43027014, 4304951, 430945, 369283, 369288, B32B 300

Patent

active

061175129

ABSTRACT:
An optical information mediumis made up of a transparent substrate, on which are formed a dye recording layer of at least one dyestuff, a reflective layer of metal, and a protective layer in sequence, wherein said protective layer is formed from a plurality layers of resin which are formed sequentially. Further, the reflective layer is made of silver, and the dye recording layer is made of a material which does not contain iodine ion. The protective layer contains a material for trapping molecules and/or ions which corrode the reflective layer. For instance, a metal powder or porous pigment is contained in the protective layer, which is active on or absorbs the molecules and/or ions corroding the reflective layer.

REFERENCES:
patent: 5573831 (1996-11-01), Suzuki et al.
patent: 5705247 (1998-01-01), Arai et al.

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