Claims
- 1. A magneto-optical recording medium comprising a transparent substrate made of synthesized resin, a magneto-optical recording layer, and a dielectric layer interposed between said magneto-optical recording layer and said transparent substrate wherein said dielectric layer is a dielectric, transparent, oxide film consisting of In.sub.2 O.sub.3, up to about 30 weight percent SnO.sub.2 based on the weight of said dielectric layer, and any impurities present being Ta, Sb of F, said layer having a volume resistivity of at least 1.times.10.sup.-1 Ohm.multidot.cm, said medium further comprising a protecting layer having a thickness no greater than 20 angstrome and consisting of a metallic titanium film between said dielectric layer and said magneto-optical recording layer.
- 2. A magneto-optical recording medium according to claim 1, wherein the content of said SnO.sub.2 is 7% by weight or less.
- 3. A magneto-optical recording medium according to claim 2, wherein the content of said SnO.sub.2 is 3% by weight or less.
- 4. A magneto-optical recording medium according to claim 1, further comprising a protecting layer covering magneto-optical recording layer on its side opposite to the transparent substrate.
- 5. A magneto-optical recording medium comprising a transparent substrate made of synthesized resin, a magneto-optical recording layer, and a dielectric layer interposed between said magneto-optical recording layer and transparent substrate, wherein said dielectric layer is a dielectric, transparent, oxide film consisting of In.sub.2 O.sub.3, up to about 30 weight percent SnO.sub.2 based on the weight of said dielectric layer, and any impurities present being Ta, Sb or F, said layer having a volume resistivity of at least 1.times.10.sup.-1 ohm.multidot.cm, further comprising a protecting layer having a thickness no greater than 20 angstrome and consisting of a metallic titanium film between said dielectric layer and said magneto-optical recording layer, and still further comprising a protecting layer covering said magneto-optical recording layer on its side opposite to the transparent substrate.
Priority Claims (2)
Number |
Date |
Country |
Kind |
61-108663 |
May 1986 |
JPX |
|
61-308520 |
Dec 1986 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 795,222, filed Nov. 15, 1991, now abandoned, which application is a continuation of application Ser. No. 659,536 filed Feb. 22, 1991 which is a continuation of U.S. Pat. No. 246,907, filed Sep. 16, 1988 which is a continuation of U.S. Pat. No. 050,527, filed Aug. 13, 1987 now abandoned.
US Referenced Citations (9)
Foreign Referenced Citations (2)
Number |
Date |
Country |
111988 |
Jun 1984 |
EPX |
52-31703 |
Mar 1977 |
JPX |
Continuations (4)
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Number |
Date |
Country |
Parent |
795222 |
Nov 1991 |
|
Parent |
659536 |
Feb 1991 |
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Parent |
246907 |
Sep 1988 |
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Parent |
50527 |
May 1987 |
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