EP0166614A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Encoated optical recording medium
Assignee: 3M Co
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Filing: 1985-06-26
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Granted: —
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Expires: 2005-06-26
Abstract
Abstract An optically tracked recording article is described which can be encoded with machine readable information. The article comprises a substrate, a radiation sensitive encodable layer and a layer bearing a machine readable tracking pattern. Information may be recorded on the radiation sensitive layer with excellent alignement or registry with the tracking pattern.
Inventors
- 👤 Akira Sumitomo 3M Limited Aruga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/2407; G11B7/24073; G11B11/00; G11B11/03; G11B11/10; G11B11/105; G11B11/10582; G11B21/00; G11B21/02; G11B21/10; G11B23/00; G11B23/30; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B5/00; G11B5/48; G11B5/58; G11B5/596; G11B5/59677; G11B7/2403; G11B7/24035; G11B7/24038; G11B7/24085
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
65 words
An optical recording medium comprising a) an optically flat substrate having on at least one surface thereof b) a radiation sensitive encodable layer, and contiguous with said layer c) a transparent polymeric protective layer wherein the improvement comprises the presence of optical tracking patterns within said protective layer or on the surface of said protective layer which is contiguous with the radiation sensitive encodable layer.
Claim 2
Dependent Claim
65 words
An optical recording medium comprising a) an optically flat substrate having on at least one surface thereof b) a radiation sensitive encodable layer, and contiguous with said layer c) a transparent polymeric protective layer wherein the improvement comprises the presence of optical tracking patterns within said protective layer or on the surface of said protective layer which is contiguous with the radiation sensitive encodable layer.
Claim 3
Dependent Claim
20 words
The medium of claim 1 wherein said substrate comprises a polymeric material and said protective layer also contains formatting information.
Claim 4
Dependent Claim
13 words
The medium of claim 1 or 2 wherein said polymeric material is transparent.
Claim 5
Independent Claim
27 words
The medium of any preceding claim wherein said optical tracking patterns comprise surface features on said protective layer in the form of spiral or concentric circle grooves.
Claim 6
Independent Claim
21 words
The medium of any preceding claim wherein said transparent protective layer is adhered to said radiation sensitive layer by an adhesive.
Claim 7
Dependent Claim
10 words
The medium of claim 5 wherein said adhesive is transparent.
Claim 8
Independent Claim
49 words
The medium of any preceding claim wherein said radiation sensitive layer comprises an imageable layer selected from the group consisting of silver halide layers, vesicular layers, dye-bleach layers, dye-formation layers, dye ablation layers, metal ablation or deformation layers, metal oxide or deformation ablation layers, phase transition layers,and photomagnetic layers.
Claim 9
Dependent Claim
97 words
An encoded optical recording medium comprising a) an optically flat substrate having on at least one surface thereon b) a radiation sensitive encodable layer, and contiguous with said layer c) a transparent polymeric protective layer wherein the improvement comprises the presence of optical tracking patterns within said protective layer or on the surface of said protective layer which is contiguous with the radiation sensitive encodable layer and wherein the encoding is in the form of machine readable modifications in the properties or concentration of material in the radiation sensitive layer in register with the optical tracking patterns.
Claim 10
Dependent Claim
97 words
An encoded optical recording medium comprising a) an optically flat substrate having on at least one surface thereon b) a radiation sensitive encodable layer, and contiguous with said layer c) a transparent polymeric protective layer wherein the improvement comprises the presence of optical tracking patterns within said protective layer or on the surface of said protective layer which is contiguous with the radiation sensitive encodable layer and wherein the encoding is in the form of machine readable modifications in the properties or concentration of material in the radiation sensitive layer in register with the optical tracking patterns.
Claim 11
Dependent Claim
14 words
The encoded medium of claim 8 wherein said substrate comprises a transparent polymeric material.
Claim 12
Dependent Claim
28 words
The medium of claim 8 or 9 wherein said optical tracking patterns comprise surface features on said protective layer in the form of concentric circular or spiral grooves.
Claim 13
Dependent Claim
20 words
The medium of claim 10 wherein said transparent protective layer is adhered to said radiation sensitive layer by an adhesive.
Claim 14
Dependent Claim
49 words
The medium of claim 11 wherein said radiation sensitive layer comprises an imageable layer selected from the group consisting of silver halide layers, vesicular layers, dye-bleach layers, dye-formation layers, dye ablation layers, metal ablation or deformation layers, metal oxide or deformation ablation layers, phase transition layers, and photomagnetic layers.
References Cited (Backward Citations)
No citation records indexed.
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