EP0099208A2
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EP
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An information recording material
Assignee: Asahi Kasei Corp
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Filing: 1983-06-30
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Granted: —
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Expires: 2003-06-30
Abstract
Abstract An information recording material for the heat-mode recording process comprising a substrate (1), a metallic recording layer (2) composed mainly of Bi, and a stabilizing layer (4) of a metal compound with a Cr layer (3) interposed between the substrate (1) and metallic recording layer (2), is extremely excellent in C/N ratio as well as in storage stability and archivability. The information recording material of this type can be advantageously employed for video image signal memories and still video recording.
Inventors
- 👤 Masafumi Nakao
- 👤 Isao Morimoto
- 👤 Koichi Mori
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 03:22
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/257; G11B7/242; G11B7/243; G11B2007/24302; G11B2007/24314; G11B2007/25705; G11B2007/25706; G11B7/004; G11B7/0045; G11B7/00452; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
37 words
An information recording material comprising a substrate; and superimposed on said substrate in the following order a first Cr layer; a metallic recording layer composed mainly of Bi; and a stabilizing layer of a first metallic compound.
Claim 2
Dependent Claim
37 words
An information recording material comprising a substrate; and superimposed on said substrate in the following order a first Cr layer; a metallic recording layer composed mainly of Bi; and a stabilizing layer of a first metallic compound.
Claim 3
Dependent Claim
21 words
An information recording material according to claim 1, wherein the thickness of the first Cr layer is 10 to 200 A.
Claim 4
Dependent Claim
21 words
An information recording material according to claim 1, 0 wherein the thickness of the first Cr layer is 30 to 80A.
Claim 5
Dependent Claim
48 words
An information recording material according to claim 1, which further comprises a second Cr layer provided either between said metallic recording layer and said stabilizing layer of a first metallic compound or on the side of said stabilizing layer of a first metallic compound remote from said substrate.
Claim 6
Dependent Claim
19 words
An information recording material according to claim 1, wherein said metallic recording layer composed mainly of Bi contains Sb.
Claim 7
Dependent Claim
45 words
An information recording material according to claim 1, wherein said stabilizing layer of a first metallic compound comprises at least one member selected from the group consisting of oxides, nitrides and fluorides of a metal selected from Be, Li, B, Mg, Al, Si, Ca, Sc,
Claim 8
Dependent Claim
37 words
An information recording material according to claim 1, wherein said stabilizing layer of a first metallic compound comprises at least one member selected from the group consisting of oxides of a metal selected from Si, Al, Ge,
Claim 9
Dependent Claim
40 words
An information recording material according to claim 1, wherein said stabilizing layer of a first metallic compound comprises at least one member selected from the group consisting of oxides of a metal selected from Si, Al, Ge, Zr, Bi, Mg,
Claim 10
Dependent Claim
35 words
An information recording material according to claim 4, wherein said stabilizing layer of a first metallic compound comprises at least one member selected from the group consisting of oxides of a metal selected from La,
Claim 11
Dependent Claim
38 words
An information recording material according to claim 1, which further comprises a layer of a second metallic compound either between the substrate and the first Cr layer or between the first Cr layer and the metallic recording layer.
Claim 12
Dependent Claim
35 words
An information recording material according to claim 10, wherein said layer of a second metallic compound comprises at least one member selected from the group consisting of oxides, nitrides and fluorides of a metal selected
Claim 13
Dependent Claim
38 words
An information recording material according to claim 10, wherein said layer of a second metallic compound comprises at least one member selected from the group consisting of oxides of a rare earth element selected from Y, La, Ce,
References Cited (Backward Citations)
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