US4782006A
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Optical recording employing diacetylene compound and dye to form and visualize a latent image
Assignee: Canon Inc
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Filing: 1986-12-10
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Granted: 1988-11-01
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Expires: 2006-12-10
Abstract
Abstract An optical recording method comprises the steps of: (A) irradiating a radiation corresponding to a recording information on an optical recording medium having a recording layer containing a diacetylene derivative and at least one selected from the group (hereinafter called the group B) consisting of azulenium salt compounds, pyrylium dyes, diene compounds, croconic methine dyes and polymethine compounds, thereby forming a latent image; and (B) irradiating a radiation on the recording medium having said latent image formed thereon to thereby visualizing said latent image.
Inventors
- 👤 Yukuo Nishimura
- 👤 Ken Eguchi
- 👤 Kunihiro Sakai
- 👤 Haruki Kawada
- 👤 Hiroshi Matsuda
- 👤 Takashi Nakagiri
- 👤 Toshihiko Miyazaki
- 👤 Yoshinori Tomida
- 👤 Toshiaki Kimura
- 👤 Kenji Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:21
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/247; B; B82; B82Y; B82Y10/00; B82Y30/00; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C5/00; G03C5/56; G11B7/002; G11B7/0037; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/127; Y10S430/145; Y10S430/146
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
78 words
An optical recording method comprising the steps of: (A) irradiating with an optical signal to impart recorded information to an optical recording medium having a recording layer containing a diacetylene compound and at least one selected from the group B consisting of azulenium salt compounds, pyrylium dyes, diene compounds, croconic methine dyes and polymethine compounds, thereby forming a latent image; and (B) irradiating the recording medium having said latent image formed thereon to thereby visualize said latent image.
Claim 2
Dependent Claim
78 words
An optical recording method comprising the steps of: (A) irradiating with an optical signal to impart recorded information to an optical recording medium having a recording layer containing a diacetylene compound and at least one selected from the group B consisting of azulenium salt compounds, pyrylium dyes, diene compounds, croconic methine dyes and polymethine compounds, thereby forming a latent image; and (B) irradiating the recording medium having said latent image formed thereon to thereby visualize said latent image.
Claim 3
Dependent Claim
53 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.R' (0) wherein R and R' each are a saturated aliphatic group substituted by a polar group; an olefinic hydrocarbon group substituted by a polar group; or an aromatic hydrocarbon substituted by a polar group.
Claim 4
Dependent Claim
57 words
An optical recording method according to claim 1, wherein the azulenium salt compounds of said group B are represented by the formula (1): ##STR22## wherein R 11 -R 17 each represent a hydrogen atom, a halogen atom or a monovalent organic radical and A 11 represents a bivalent organic radical which is bonded through a double bond.
Claim 5
Dependent Claim
60 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: ##STR23## wherein X 21 represents an oxygen atom, a sulfur atom or a selenium atom, R 21 , R 22 and R 23 represent an organic radical, and A 21 represents an anion.
Claim 6
Dependent Claim
100 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: ##STR24## wherein R 31 represents an optionally substituted alkyl group, phenyl group or styryl group; R 32 and R 36 represent optionally substituted arylene group and form a conjugated double bond system together with the two --C═CH-- groups adjacent thereto; R 33 and R 37 represent an optionally substituted phenyl group or a naphthyl group; R 34 represents an alkoxy group; R 35 represents an alkyl group; and A 31 represents an anion radical.
Claim 7
Dependent Claim
50 words
An optical recording method according to clain 1, wherein croconic methine dyes of said group B have the basic structure represented by the formula (4) shown below: ##STR25## wherein M 41 .sup.⊕ represents metal ion, A 41 and A 42 represent substituents containing an aromatic ring and/or a heterocyclic ring.
Claim 8
Dependent Claim
50 words
An optical recording method according to clain 1, wherein croconic methine dyes of said group B have the basic structure represented by the formula (4) shown below: ##STR25## wherein M 41 .sup.⊕ represents metal ion, A 41 and A 42 represent substituents containing an aromatic ring and/or a heterocyclic ring.
Claim 9
Dependent Claim
86 words
An optical recording method according to claim 1, wherein polymethine compounds of said group B are reepresented by the formula (5-1) or (5-2) shown below: ##STR26## wherein R 51 , R 52 and R 53 are independently represent an optionally substituted aryl group; R 54 and R 55 represent an optionally substituted arylene group and form a conjugated double bond system together with the two --CH═CH-- groups adjacent thereto; R 56 represents hydrogen or an optionally substituted aryl group; and A 51 represents an anion radical.
Claim 10
Dependent Claim
19 words
An optical recording method according to claim 1, wherein said radiation in the step A is an infrared radiation.
Claim 11
Dependent Claim
18 words
An optical recording method according to claim 1, wherein said radiation in the step B is a ultraviolet.
Claim 12
Dependent Claim
21 words
An optical recording method according to claim 8, wherein an radiation IR-ray of 800-900 nm is used as said infrared radiation.
Claim 13
Dependent Claim
31 words
An optical recording method according to claim 1, wherein the recording layer containing said diacetylene compound and at least one selected from the group B has the a Langmuir-Blodgett film structure.
Claim 14
Dependent Claim
28 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 compound.
Claim 15
Dependent Claim
90 words
An optical recording method comprising the steps of: (A) irradiating with an optical signal to impart recorded information to an optical recording medium having a recording layer containing a diacetylene compound and at least one selected from the group B consisting of azulenium salt compound, pyrylium dyes, diene compounds, croconic methine dyes and polymethine compounds, thereby forming a latent image; (B) irradiating the recording medium having said latent image formed thereon to thereby visualize said latent image; and (C) heating said recording medium to thereby further visualize said latent image.
Claim 16
Dependent Claim
90 words
An optical recording method comprising the steps of: (A) irradiating with an optical signal to impart recorded information to an optical recording medium having a recording layer containing a diacetylene compound and at least one selected from the group B consisting of azulenium salt compound, pyrylium dyes, diene compounds, croconic methine dyes and polymethine compounds, thereby forming a latent image; (B) irradiating the recording medium having said latent image formed thereon to thereby visualize said latent image; and (C) heating said recording medium to thereby further visualize said latent image.
Claim 17
Dependent Claim
53 words
An optical recording method according to claim 13, wherein said diacetylene compound is represented by the formula (0): R--C.tbd.C--C.tbd.C--R' (0) wherein R and R' each are a saturated aliphatic group substituted by a polar group; an olefinic hydrocarbon group substituted by a polar group; or an aromatic hydrocarbon substituted by a polar group.
Claim 18
Dependent Claim
57 words
An optical recording method according to claim 13, wherein the azulenium salt compounds of said group B are represented by the formula (1): ##STR27## wherein R 11 -R 17 each represent a hydrogen atom, a halogen atom or a monovalent organic radical and A 11 represents a bivalent organic radical which is bonded through a double bond.
Claim 19
Dependent Claim
60 words
An optical recording method according to claim 13, wherein the pyrylium dyes of said group B have the basic structure represented by the formula (2) shown below: ##STR28## wherein X 21 represents an oxygen atom, a sulfur atom or a selenium atom, R 21 , R 22 and R 23 represent an organic radical, and A 21 represents an anion.
Claim 20
Dependent Claim
103 words
An optical recording method according to claim 13, wherein the diene compounds of said group B are represented by the formula (3-1) or (3-2) shown below: ##STR29## wherein R 31 represents an optionally substituted alkyl group, a phenyl group or a styryl group R 32 and R 36 represent an optionally substituted arylene group; and form a conjugated double bond system together with the two --CH═CH-- groups adjacent thereto; R 33 and R 37 represent an optionally substituted phenyl group or a naphthyl group R 34 represents an alkoxy group; R 35 represents a alkyl group; and A 31 represents an anion radical.
Claim 21
Dependent Claim
51 words
An optical recording method according to claim 13, wherein croconic methine dyes of said group B have the basic structure represented by the formula (4) shown below: ##STR30## wherein M 41 .sup.⊕ represents a metal ion, A 41 and A 42 represent substituents containing an aromatic ring and/or a heterocyclic ring.
Claim 22
Dependent Claim
86 words
An optical recording method according to claim 13, wherein polymethine compounds of said group B are represented by the formula (5-1) or (5-2) shown below: ##STR31## wherein R 51 , R 52 and R 53 each independently represent an optionally substituted aryl group; R 54 and R 55 represent an optionally substituted arylene group and form a conjugated double bond system together with the two --CH═CH-- groups adjacent thereto; R 56 represents hydrogen or an optionally substituted aryl group; and A 51 represents an anion radical.
Claim 23
Dependent Claim
19 words
An optical recording method according to claim 13, wherein said radiation in the step A is an infrared radiation.
Claim 24
Dependent Claim
19 words
An optical recording method according to claim 13, wherein said radiation in the step B is a ultraviolet radiation.
Claim 25
Dependent Claim
19 words
An optical recording method according to claim 20, wherein radiation of 800-900 nm is used as said infrared radiation.
Claim 26
Dependent Claim
30 words
An optical recording method according to claim 13, wherein the recording layer containing said diacetylene compound and at least one selected from the group B has a Langmuir-Blodgett film structure.
Claim 27
Dependent Claim
28 words
An optical recording method according to claim 13, wherein said recording layer is formed by coating of the compound selected from the group B or the diacetylene compound.
Claim 28
Dependent Claim
24 words
An optical recording method according to claim 13, wherein a heater or a radiation is used as the heating means in said step C.
Claim 29
Dependent Claim
27 words
An optical recording method according to claim 13, wherein heating in said step C is conducted at a temperature in the range from 50° to 120° C.
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