US4863832A
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US
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Optical recording employing diacetylene compound and dye to change color and form pits
Assignee: Canon Inc
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Filing: 1986-12-15
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Granted: 1989-09-05
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Expires: 2006-12-15
Abstract
Abstract An optical recording method is provided which comprises a step of irradiating light corresponding to recording information on the optical recording medium having a recording layer containing at least one selected from the group consisting of azulenium salt compounds, pyrylium dyes, diene compounds, croconic methine dyes or polymethine compounds and a diacetylene derivative compound to thereby form a pit on said recording layer.
Inventors
- 👤 Kenji Saitoh
- 👤 Toshihiko Miyazaki
- 👤 Ken Eguchi
- 👤 Yukuo Nishimura
- 👤 Kunihiro Sakai
- 👤 Haruki Kawada
- 👤 Hiroshi Matsuda
- 👤 Takashi Nakagiri
- 👤 Yoshinori Tomida
- 👤 Toshiaki Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:46
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/2463; G11B7/247; G11B7/252; G11B7/253; G11B7/2531; Y; Y10; Y10S; Y10S430/00; Y10S430/145; Y10S430/146
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
65 words
An optical recording method comprising a step of irradiating with light corresponding to recording information on an optical recording medium having a recording layer containing at least one selected from the group consisting of azulenium salt compounds, pyrylium dyes, diene compounds, croconic methine dyes or polymethine compounds (hereinafter called the group B) and a diacetylene compound to thereby form a pit on said recording layer.
Claim 2
Dependent Claim
65 words
An optical recording method comprising a step of irradiating with light corresponding to recording information on an optical recording medium having a recording layer containing at least one selected from the group consisting of azulenium salt compounds, pyrylium dyes, diene compounds, croconic methine dyes or polymethine compounds (hereinafter called the group B) and a diacetylene compound to thereby form a pit on said recording layer.
Claim 3
Dependent Claim
119 words
An optical recording method according to claim 1, wherein said diacetylene compound is represented by the formula (0): R--C.tbd.C--C.tbd.C--R' (0) werein R and R' each represent an alkyl group, an olefinic hydrocarbon group, a phenyl, a fused polycyclic aromatic hydrocarbon group, a linear polycylic phenyl group, a carboxyl group or a metal salt or amine salt thereof, a sulfonic acid group or a metal salt or amine salt thereof, a sulfoamide group, an amide group, an amino group, an imino group, a hydroxy group, a quaternary ammonium group, an oxyamino group, a diazonium group, a guanidine group, a hydrazine group, a phosphoric acid group, a silicic acid group, an aluminic acid group, a nitrile group or a thioalcoholic group.
Claim 4
Dependent Claim
55 words
An optical recording method according to claim 1, wherein the azulenium salt compounds of said group B are represented by the formula (1): ##STR20## (wherein R 11 -R 17 each represent a hydrogen atom, a halogen atom or a monovalent organic radical and A 11 represents a divalent organic residue bonded through a double bond.
Claim 5
Dependent Claim
61 words
An optical recording method according to claim 1, wherein the pyrylium dyes of said group B have the basic structure represented by the formula (2) shown below: ##STR21## (wherein X 20 represents an oxygen atom, a sulfur atom or a selenium atom, R 21 , R 22 , and R 23 represent an organic radical, and A 20 represents an anion).
Claim 6
Dependent Claim
111 words
An optical recording method according to claim 1, wherein the diene compounds of said group B are represented by the formula (3-1) or (3-2) shown below: ##STR22## wherein R 31 represents an alkyl group, a phenyl group or a styryl group which is optionally substituted; R 32 and R 36 each represent an arylene group which may have a substituent for forming a conjugated double bond system together with the two --CH═CH-- groups adjacent thereto; R 33 and R 37 represent a phenyl group or a naphthyl group which is optionally substituted; R 34 represents an alkoxy group; R 35 represents an alkyl group; and A 30 represents an anion radical.
Claim 7
Dependent Claim
53 words
An optical recording method according to claim 1, wherein croconic methine dyes of said group B have the basic structure represented by the formula (4) shown below: ##STR23## (wherein M 40 .sup.⊕ represents a metal ion, A 41 and A 42 each represent a substituent containing an aromatic ring and/or a heterocyclic ring).
Claim 8
Dependent Claim
92 words
An optical recording method according to claim 1, wherein polymethine compounds of said group B are represented by the formula (5-1) or (5-2) shown below: ##STR24## wherein R 51 , R 52 and R 53 each independently represent an aryl group which is optionally substituted; R 54 and R 55 each represent an arylene group which may have substituent for forming a conjugated double bond system together with the two --C═CH-- groups adjacent thereto; R 56 represents hydrogen or an aryl group which is optionally substituted; and A 50 represents anion radical.
Claim 9
Dependent Claim
18 words
An optical recording method according to claim 1, wherein said recording layer is formed by the Langmuir-Blodgett method.
Claim 10
Dependent Claim
29 words
An optical recording method according to claim 1, wherein said recording layer is formed by coating of the compound selected from the group B or the diacetylene derivative compound.
Claim 11
Dependent Claim
114 words
An optical recording method for forming a color change and a structural change on a recording medium comprising the steps of: irradiating with light, controlled in a dose corresponding to recording information, onto an optical recording medium having a recording layer containing at least one selected from the group consisting of azulenium salt compounds, pyrylium dyes, diene compounds, cronconic methine dyes and polymethine compounds, hereinafter called the group B, and a diacetylene compound; providing a dose Q 1 for changing the color at an exposed portion of the recording medium; and providing a dose Q 2 for forming a pit at an exposed portion of the recording medium, wherein Q 1 >Q 2 .
Claim 12
Dependent Claim
114 words
An optical recording method for forming a color change and a structural change on a recording medium comprising the steps of: irradiating with light, controlled in a dose corresponding to recording information, onto an optical recording medium having a recording layer containing at least one selected from the group consisting of azulenium salt compounds, pyrylium dyes, diene compounds, cronconic methine dyes and polymethine compounds, hereinafter called the group B, and a diacetylene compound; providing a dose Q 1 for changing the color at an exposed portion of the recording medium; and providing a dose Q 2 for forming a pit at an exposed portion of the recording medium, wherein Q 1 >Q 2 .
Claim 13
Dependent Claim
118 words
An optical recording method according to claim 10, wherein said diacetylene compound is represented by the formula (0): R--C.tbd.C--C.tbd.C--R' (0) wherein R and R' each represent an alkyl group, an olefinic hydrocarbon group, phenyl, a fused polycyclic aromatic hydrocarbon group, a linear polycylic phenyl group, a carboxyl group or a metal salt or amine salt thereof, a sulfonic acid group or a metal salt or amine salt thereof, a sulfoamide group, an amide group, an amino group, an imino group, a hydroxy group, a quaternary ammonium group, an oxyamino group, a diazonium group, a guanidine group, a hydrazine group, a phosphoric acid group, a silicic acid group, an aluminic acid group, a nitrile group or a thioalcoholic group.
Claim 14
Dependent Claim
50 words
An optical recording method according to claim 10, wherein the azulenium salt compounds of said group B are represented by the formula (1): ##STR25## (wherein R 11 -R 17 each represent a hydrogen atom, a halogen atom or a monovalent organic radical and A 11 represents a divalent organic residue).
Claim 15
Dependent Claim
59 words
An optical recording method according to claim 10, wherein the pyrylium dyes of said group B have the basic structure represented by the formula (2) shown below: ##STR26## (wherein X 20 represents an oxygen atom, a sulfur atom or a selenium atom, R 21 , R 22 and R 23 represent organic radical, and A 20 represents an anion).
Claim 16
Dependent Claim
110 words
An optical recording method according to claim 10, wherein the diene compounds of said group B are represented by the formula (3-1) or (3-2) shown below: ##STR27## wherein R 31 represents an alkyl group, a phenyl group or a styryl group which is optionally substituted R 32 and R 36 represent an arylene group which may have a substituent for forming a conjugated double bond system together with the two --CH.tbd.CH-- groups adjacent thereto; R 33 and R 37 represent a phenyl group or a naphthyl group which is optionally substituted; R 34 represents an alkoxy group; R 35 represents an alkyl group; and A 30 represents an anion radical.
Claim 17
Dependent Claim
52 words
An optical recording method according to claim 10, wherein the croconic methine dyes of said group B have a basic structure represented by the formula (4) shown below: ##STR28## (wherein M 40 .sup.⊕ represents a metal ion, A 41 and A 42 represent substituents containing an aromatic ring and/or a heterocyclic ring).
Claim 18
Dependent Claim
93 words
An optical recording method according to claim 10, wherein polymethine compounds of said group B are represented by the formula (5-1) or (5-2) shown below: ##STR29## wherein R 51 , R 52 and R 53 each independently represent an aryl group which is optionally substituted; R 54 and R 55 each represent an arylene group which may have a substituent for forming a conjugated double bond system together with the two --CH.tbd.CH-- groups adjacent thereto; R 56 represents hydrogen or a aryl group which is optionally substituted; and A50 represents an anion radical.
Claim 19
Dependent Claim
18 words
A optical recording method according to claim 10, wherein said recording layer is formed by the Langmuir-Blodgett method.
Claim 20
Dependent Claim
29 words
An optical recording method according to claim 10, wherein said recording layer is formed by coating of the compound selected from the group B or the diacetylene derivative compound.
Claim 21
Dependent Claim
55 words
An optical recording method according claim 2, wherein said olefinic hydrocarbon group is selected from the group consisting of vinyl, vinylidene, and ethynyl, said fused polycyclic aromatic hydrocarbon group is selected from the group consisting of naphthyl, and anthranyl and said linear polycyclic phenyl group is selected from the group consisting of biphenyl and terphenyl.
Claim 22
Dependent Claim
55 words
An optical recording method according claim 11, wherein said olefinic hydrocarbon group is selected from the group consisting of vinyl, vinylidene, and ethynyl, said fused polycyclic aromatic hydrocarbon group is selected from the group consisting of naphthyl, and anthranyl, and said linear polycyclic phenyl group is selected from the group consisting of biphenyl and terphenyl.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
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