EP0305054A1
Expired / Lapsed
EP
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IR-ray absorptive compound and optical recording medium by use thereof
Assignee: Canon Inc
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Filing: 1988-07-28
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Granted: —
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Expires: 2008-07-28
Abstract
Abstract An IR-ray absorptive compound represented by the formula (1) or (2): and an optical recording medium having a substrate and an organic dye thin film, comprising the formulae (1) and/or (2).
Inventors
- 👤 Tetsuro Fukui
- 👤 Yoshihiro Oguchi
- 👤 Hiroyuki Sugata
- 👤 Kyo Miura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 15:16
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/247; G11B7/252; G11B7/257; G11B2007/25705; G11B2007/25706; G11B2007/2571; G11B2007/25713; G11B2007/25715; G11B2007/25718; G11B7/245; G11B7/2463; G11B7/2472; G11B7/2475; G11B7/248; G11B7/249; G11B7/253; G11B7/2531; G11B7/2532; G11B7/2533; G11B7/2534; G11B7/2578
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
106 words
An IR-ray absorptive compound represented by the formula (1) or (2): with alkyl, halogen or alkoxy group ; X ⊖ represents an anion; R₁ through R₈ are each a substituent having 1 to 8 carbon atoms, at least one of them being an alkoxyalkyl group, an alkenyl group or an alkynyl group or at least one combination of R₁ and R₂, R₃ and R₄, R₅ and R₆, and R₇ and R₈ together with N forming a substituted or unsubstituted pyrrolidine ring, a substituted or unsubstituted piperidine ring, a substituted or unsubstituted morpholine ring, a substituted or unsubstituted tetrahydropyridine ring or a substituted or unsubstituted cyclohexylamine ring).
Claim 2
Dependent Claim
106 words
An IR-ray absorptive compound represented by the formula (1) or (2): with alkyl, halogen or alkoxy group ; X ⊖ represents an anion; R₁ through R₈ are each a substituent having 1 to 8 carbon atoms, at least one of them being an alkoxyalkyl group, an alkenyl group or an alkynyl group or at least one combination of R₁ and R₂, R₃ and R₄, R₅ and R₆, and R₇ and R₈ together with N forming a substituted or unsubstituted pyrrolidine ring, a substituted or unsubstituted piperidine ring, a substituted or unsubstituted morpholine ring, a substituted or unsubstituted tetrahydropyridine ring or a substituted or unsubstituted cyclohexylamine ring).
Claim 3
Dependent Claim
123 words
An optical recording medium having a substrate and an organic dye thin film, comprising a compound of the formula (1) and/or (2) in said organic dye thin film: with alkyl, halogen or alkoxy group ; X ⊖ represents an anion; R₁ through R₈ are each a substituent having 1 to 8 carbon atoms, at least one of them being an alkoxyalkyl group, an alkenyl group or an alkynyl group or at least one combination of R₁ and R₂, R₃ and R₄, R₅ and R₆, and R₇ and R₈ together with N forming a substituted or unsubstituted pyrrolidine ring, a substituted or unsubstituted piperidine ring, a substituted or unsubstituted morpholine ring, a substituted or unsubstituted tetrahydropyridine ring or a substituted or unsubstituted cyclohexylamine ring).
Claim 4
Dependent Claim
123 words
An optical recording medium having a substrate and an organic dye thin film, comprising a compound of the formula (1) and/or (2) in said organic dye thin film: with alkyl, halogen or alkoxy group ; X ⊖ represents an anion; R₁ through R₈ are each a substituent having 1 to 8 carbon atoms, at least one of them being an alkoxyalkyl group, an alkenyl group or an alkynyl group or at least one combination of R₁ and R₂, R₃ and R₄, R₅ and R₆, and R₇ and R₈ together with N forming a substituted or unsubstituted pyrrolidine ring, a substituted or unsubstituted piperidine ring, a substituted or unsubstituted morpholine ring, a substituted or unsubstituted tetrahydropyridine ring or a substituted or unsubstituted cyclohexylamine ring).
Claim 5
Dependent Claim
34 words
An optical recording medium according to claim 2, wherein the compound of said formula (1) or (2) is 1 to 60% by weight based on the total solids in said organic dye thin film.
Claim 6
Dependent Claim
34 words
An optical recording medium according to claim 3, wherein the compound of said formula (1) or (2) is 5 to 40% by weight based on the total solids in said organic dye thin film.
Claim 7
Dependent Claim
34 words
An optical recording medium according to claim 4, wherein the compound of said formula (1) or (2) is 10 to 30% by weight based on the total solids in said organic dye thin film.
Claim 8
Dependent Claim
20 words
An optical recording medium according to claim 2, wherein a protective layer is provided on said organic dye thin film.
Claim 9
Dependent Claim
23 words
An optical recording medium according to claim 2, wherein a subbing layer is provided between said organic dye thin film and the substrate.
Claim 10
Dependent Claim
24 words
An optical recording medium according to claim 2, wherein said organic dye thin film has a film thickness of 50 Å to 100 µm.
Claim 11
Dependent Claim
24 words
An optical recording medium according to claim 8, wherein said organic dye thin film has a film thickness of 200 Å to 1 µm.
Claim 12
Dependent Claim
20 words
An optical recording medium according to claim 2, wherein said organic dye is a polymethine type dye having polymethine chain.
Claim 13
Dependent Claim
28 words
An optical recording medium comprising an I-R absorptive aminium compound or a diimonium compound having maximum absorption wavelengths of 900 nm or longer and another I-R absorptive compound.
Claim 14
Dependent Claim
28 words
An optical recording medium comprising an I-R absorptive aminium compound or a diimonium compound having maximum absorption wavelengths of 900 nm or longer and another I-R absorptive compound.
References Cited (Backward Citations)
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