Patent EP0189188A2 successfully refreshed from Google Patents.
EP0189188A2
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EP
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Optical recording medium
Assignee: Sony Corp
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Filing: 1986-01-22
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Granted: —
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Expires: 2006-01-22
Abstract
Abstract An optical recording medium including a substrate and a photosensitive layer thereon, the photosensitive layer containing as its major ingredients, the combination of a polymeric binder resin and an indolinospirobenzothiopyran compound represented by the general formula (I): where R i , R 2 and R 3 are each a hydrogen atom, a halohen atom, an alkyl group containing from 1 to 5 carbon atoms, an alkoxy group containing from 1 to 5 carbon atoms, an alkoxymethyl group containing from 1 to 5 carbon atoms in the alkoxy group, a hydroxymethyl group or an alkylaminomethyl group containing 2 to 6 carbon atoms in the alkyl group. The optical recording medium has a colored image which is very stable against heat and visible light.
Inventors
- 👤 Seiichi Arakawa
- 👤 Hirofumi Kondo
- 👤 Nobutoshi Asai
- 👤 Junetsu Seto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 05:10
CPC Classifications
C; C07; C07D; C07D495/00; C07D495/02; C07D495/10; G; G03; G03C; G03C1/00; G03C1/685; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/245; G11B7/252; G11B7/253; G11B7/2531; G11B7/2533; G11B7/258; G11B7/2585; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
An optical recording medium comprising a substrate and a photosensitive layer thereon, said photosensitive layer containing as its major ingredients, a polymeric binder resin and an indolinospirobenzothiopyran compound represented by the general formula (I): where R 1 , R 2 and R 3 are a hydrogen atom, a halogen atom, an alkyl group having from 1 to 5 carbon atoms, an alkoxy group containing from 1 to 5 carbon atoms, an alkoxyethyl group containing from 1 to 5 carbon atoms in the alkoxy group, a hydroxymethyl group or an alkylaminomethyl group containing 2 to 6 carbon atoms in the alkyl group.
Claim 2
Dependent Claim
101 words
An optical recording medium comprising a substrate and a photosensitive layer thereon, said photosensitive layer containing as its major ingredients, a polymeric binder resin and an indolinospirobenzothiopyran compound represented by the general formula (I): where R 1 , R 2 and R 3 are a hydrogen atom, a halogen atom, an alkyl group having from 1 to 5 carbon atoms, an alkoxy group containing from 1 to 5 carbon atoms, an alkoxyethyl group containing from 1 to 5 carbon atoms in the alkoxy group, a hydroxymethyl group or an alkylaminomethyl group containing 2 to 6 carbon atoms in the alkyl group.
Claim 3
Dependent Claim
16 words
A medium according to claim 1 wherein the polymeric binder resin material is a chlorine-containing polymer.
Claim 4
Dependent Claim
16 words
A medium according to claim 2 wherein the chlorine-containing polymer is a vinyl chloride-vinylidene chloride copolymer.
Claim 5
Dependent Claim
14 words
A medium according to claim 1 wherein the polymeric material is a phenolic resin.
Claim 6
Independent Claim
15 words
A medium according to olaim 1, wherein the photosensitive layer further contains a photocuring agent.
Claim 7
Independent Claim
15 words
A medium according to olaim 1, wherein the photosensitive layer further contains a photocuring agent.
Claim 8
Dependent Claim
15 words
A medium according to claim 1 wherein the 'photosensitive layer further contains a heat-curing agent.
Claim 9
Dependent Claim
30 words
A medium according to claim 1 wherein the photosensiti.ve layer is formed on a base and is provided with a metal reflecting layer on one of the major surfaces thereof.
Claim 10
Dependent Claim
28 words
A medium according to claim 7 wherein the photosensitive layer has been heat-treated after coloring of the photosensitive layer by irradiation with ultraviolet rays in a predetermined pattern.
Claim 11
Dependent Claim
32 words
A medium according to claim 8 wherein the photosensitive layer is formed on a transparent base of an ultraviolet shielding material, and a metal reflecting layer is formed on the photosensitive layer.
References Cited (Backward Citations)
No citation records indexed.
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