High-density information recording carrier

Details High-density information recording carrier High-density information recording carrier

1988-10-17

1990-07-24

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of inorganic material

369268, 369288, 428699, 428900, 360135, 365122, G11B 566

Patent

active

049439570

ABSTRACT:
A high-density information recording carrier such as an optical disk which is used for recording and/or playing back information carried on a plastic substrate by means of laser beams has an improved protective layer between a recording layer and the plastic substrate. The protective layer is made of inorganic glass made of alkali-free glass containing less than 1 wt % of alkali metal oxides. The resulting optical disk shows improved durability, higher C/N, lower BER and higher film forming rate.

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patent: 4449138 (1984-05-01), Ando
patent: 4579777 (1986-04-01), Honguu et al.
patent: 4831608 (1989-05-01), Tsukane et al.
"Glass to Metal Seals", J. H. Partridge, The Society of Glass Technology, p. 228 (1949).

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