Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1995-05-18
1997-04-15
Kiliman, Leszek
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428333, 428336, 428694ML, 428694DE, 428694XS, 428694NF, 428900, 427127, 427128, 427129, 427130, 427131, 369 13, 3692751, 369283, 369286, G11B 566, B32B 516, B05D 512
Patent
active
056207921
ABSTRACT:
A multilayer medium comprising a substrate, a composite dielectric layer, a magneto-optic recording layer, another dielectric layer, and a reflective layer. The composite dielectric layer has two sublayers made of different materials with distinct refractive indices, or alternatively has a single layer with a refractive index gradient. The refractive index of the portion of the composite dielectric layer adjacent the substrate is about 0.3 to 1.0 greater than the refractive index of the portion of the composite dielectric layer adjacent the recording layer.
REFERENCES:
patent: 4466035 (1984-08-01), Connell et al.
patent: 4861671 (1989-08-01), Muchink et al.
patent: 4920007 (1990-04-01), Sawamura
patent: 5232790 (1993-08-01), Arimune et al.
"Refractive indices of reactive magnetooptical thin films," Challener et al., Applied Optics, vol. 29, No. 20, Jul. 10, 1990, pp. 3040-3045.
Imation Corp.
Kiliman Leszek
Levinson Eric D.
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