Optical recording medium having dual information surfaces

Details Optical recording medium having dual information surfaces Optical recording medium having dual information surfaces

1998-10-30

2000-11-07

Evans, Elizabeth

Stock material or miscellaneous articles

All metal or with adjacent metals

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

428 642, 428 644, 428 645, 428 652, 428913, 43027013, 4304951, 430945, 3692751, 369283, 369288, B32B 302

Patent

active

061434264

ABSTRACT:
The optical recording medium of this invention includes: a first substrate having a first information surface; a semitransparent reflection film formed on the first information surface of the first substrate; a second substrate having a second information surface; a reflection film formed on the second information surface of the second substrate; and an adhesive layer for adhering the first substrate and the second substrate so that the first information surface and the second information surface face each other, wherein the thickness of the first substrate is 0.56 mm or more, the thickness of the adhesive layer is 30 .mu.m or more, and the total thickness of the first substrate and the adhesive layer is 0.68 mm or less.

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