Optical disc having protective films

Details Optical disc having protective films Optical disc having protective films

1997-04-10

2000-04-18

Evans, Elizabeth

Stock material or miscellaneous articles

Circular sheet or circular blank

428 644, 428 646, 428688, 428696, 428698, 428913, 369283, 369288, B32B 300

Patent

active

060512989

ABSTRACT:
A high density optical disc having an optical disc protective structure for enabling a high density information recording and retrieval optical disc. The optical disc includes: a first protective film coated by a few tens of microns, on the reading surface of the optical disc, the first protective film having good transmissivity and high hardness against abrasion; and a second protective film coated by a few microns and having a lower surface energy and a minute molecular structure, providing protection against fingerprints on the surface of the first protective film.

REFERENCES:
patent: 5008128 (1991-04-01), Kudo et al.
patent: 5061562 (1991-10-01), Yamanaka et al.
patent: 5154957 (1992-10-01), Yamada et al.
patent: 5232737 (1993-08-01), Ueno et al.
patent: 5292568 (1994-03-01), Tezuka et al.
patent: 5618617 (1997-04-01), Uchida et al.

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