EP0130399A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Information recording medium
Assignee: Fujifilm Holdings Corp
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Filing: 1984-06-04
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Granted: —
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Expires: 2004-06-04
Abstract
Abstract An information recording medium is disclosed which comprises a transparent glass plate support (1) and a recording layer (4) of the kind which enables writing and reading of information by means of a laser beam, wherein a layer made up of an inorganic substance (2) and a layer made up of an organic polymeric substance (3) are additionally provided as the interlayer in a double or multiple layer form between the support and the recording layer.
Inventors
- 👤 Takeji Ochiai
- 👤 Minoru Wada
- 👤 Toshiyuki Masuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 05:55
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/257; G11B7/242; G11B7/243; G11B2007/24302; G11B2007/24306; G11B2007/2431; G11B2007/24312; G11B2007/24316; G11B2007/25705; G11B2007/25706; G11B2007/25708; G11B2007/2571; G11B2007/25715; G11B7/253; G11B7/2531; G11B7/2578
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
52 words
An information recording medium comprising a transparent glass plate support having provided thereon, in sequence, an interlayer and a recording layer which is capable of writing and reading information using a laser beam, said interlayer comprising a layer composed of an inorganic substance and a layer composed of an organic polymeric substance.
Claim 2
Dependent Claim
52 words
An information recording medium comprising a transparent glass plate support having provided thereon, in sequence, an interlayer and a recording layer which is capable of writing and reading information using a laser beam, said interlayer comprising a layer composed of an inorganic substance and a layer composed of an organic polymeric substance.
Claim 3
Dependent Claim
22 words
An information recording medium as in claim 1, wherein said inorganic substance layer is provided in contact with the glass plate support.
Claim 4
Dependent Claim
23 words
An information recording medium as in claim 1, wherein said organic polymeric substance layer is provided in contact with the glass plate support.
Claim 5
Dependent Claim
51 words
An information recording medium as in claim 1, wherein said inorganic substance layer is composed of at least one member selected from the group consisting of Aℓ 2 O 3 , SiO, Si0 2 , MgF 2 , NiO, Ti0 2 , M g O and Si 3 N 4 .
Claim 6
Dependent Claim
22 words
An information recording medium as in claim 4, wherein said inorganic substance layer has a thickness 0 of 1,000 A or more.
Claim 7
Dependent Claim
19 words
An information recording medium as in claim 4, wherein said inorganic substance layer is provided using a sputtering technique.
Claim 8
Dependent Claim
28 words
An information recording medium as in claim 1, wherein said glass plate support is in a disc-form and has a thickness of from about 1.0 to 1.5 mm.
Claim 9
Dependent Claim
24 words
An information recording medium as in claim 4, wherein said inorganic substance layer is composed of SiO 2 or Si 3 N 4 .
Claim 10
Dependent Claim
23 words
An information recording medium as in claim 4, wherein said inorganic substance layer has a thickness of from 1,500 A to 1 um.
Claim 11
Dependent Claim
18 words
An information recording medium as in claim 1, wherein said inorganic substance layer is composed of water glass.
Claim 12
Dependent Claim
25 words
ll. An information recording medium as in claim 1, wherein said organic polymeric substance layer has a thickness of from 0.01 µm to 10 µm.
Claim 13
Dependent Claim
24 words
An information recording medium as in claim 1, wherein said organic polymeric substance layer has a thickness of from 0.1 um to 4 um.
Claim 14
Dependent Claim
24 words
An information recording medium as in claim 2, wherein said organic polymeric substance layer has a thickness of from 0.01 um to 10 µm.
Claim 15
Dependent Claim
24 words
An information recording medium as in claim 2, wherein said organic polymeric substance layer has a thickness of from 0.1 µm to 4 µm.
Claim 16
Dependent Claim
24 words
An information recording medium as in claim 3, wherein said organic polymeric substance layer has a thickness of from 0.01 µm to 10 µm.
Claim 17
Dependent Claim
24 words
An information recording medium as in claim 3, wherein said organic polymeric substance layer has a thickness of from 0.1 µm to 4 µm.
References Cited (Backward Citations)
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