EP0024136A1
Expired / Lapsed
EP
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Optical recording member
Assignee: Xerox Corp
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Filing: 1980-07-25
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Granted: —
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Expires: 2000-07-25
Abstract
Abstract An optical recording member (10) for storing data by the selective ablation of a layer of energy absorbing material by laser address including a layer of recording material (14) and at least one layer (16) of a polymeric material having a second order glass transition temperature less than 293°K contiguous to at least one surface of the layer of recording material (14).
Inventors
- 👤 Richard L. Schank
- 👤 Gordon E. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 08:01
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/254; G11B7/2542; G11B7/242; G11B7/243; G11B2007/24302; G11B2007/24316; G11B7/257; G11B7/2572; G11B7/2575; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/251; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
69 words
An optical recording member for storing data by the selective ablation of a layer of energy absorbing material by laser address including a recording layer (14) of an optical energyabsorbing material and at least one layer of a polymeric material (16) contiguous to at least one surface of the recording layer (14), characterised in that the polymeric material (16) has a second order glass transition temperature less than 293°K.
Claim 2
Dependent Claim
69 words
An optical recording member for storing data by the selective ablation of a layer of energy absorbing material by laser address including a recording layer (14) of an optical energyabsorbing material and at least one layer of a polymeric material (16) contiguous to at least one surface of the recording layer (14), characterised in that the polymeric material (16) has a second order glass transition temperature less than 293°K.
Claim 3
Dependent Claim
33 words
The optical recording member of claim 1 wherein the second order glass transition temperature of the polymer forming the layer (16) contiguous to the recording layer (14) is less than 273 0 K.
Claim 4
Dependent Claim
31 words
The optical recording member of claim 1 wherein the second order glass transition temperature of the polymer forming the layer (16) contiguous to the recording layer (14) is less than 170°K.
Claim 5
Dependent Claim
34 words
The optical recording member of any one of claims 1 to 3 wherein the polymer that forms the layer (16) contiguous to the recording layer (14) has a critical surface tension less than 30.
Claim 6
Dependent Claim
41 words
The optical recording member of any one of claims 1 to 4 wherein the recording layer (14) and the layer (16) of polymeric material contiguous to at least one surface of the recording layer (14) are supported on a substrate (12).
Claim 7
Dependent Claim
32 words
The optical recording member of any one of claims 1 to 5 wherein a protective layer (18) of a mechanically tough polymer overlays the layer (16) contiguous to the recording layer (14).
Claim 8
Dependent Claim
25 words
The optical recording member of any one of claims 1 to 6 wherein the layer (16) contiguous to the recording layer (14) is polysiloxane resin.
Claim 9
Dependent Claim
32 words
The optical recording member of any one of claims 1 to 6 wherein the layer (16) contiguous to the recording layer (14) is the reaction product of a siloxane and bisphenol A.
Claim 10
Dependent Claim
19 words
The optical recording member of any one of claims 1 to 8 wherein the recording layer (14) is tellerium.
Claim 11
Dependent Claim
23 words
The optical recording member of claim 9 wherein the recording layer (14) has a thickness of from about 75 to about 250 angstroms.
References Cited (Backward Citations)
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