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US5482822A Expired / Lapsed US ⏱️ 0.0 years remaining

Infrared-absorptive compound and optical recording medium making use of the same

Assignee: Canon Inc
•
Filing: 1993-05-11
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Granted: 1996-01-09
•
Expires: 2013-05-11
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Abstract

Abstract An infrared-absorptive compound is disclosed which has the structure represented by the following formula (I) or (II) ##STR1## Also, an optical recording medium having a recording layer containing the infrared-absorptive compound is disclosed.

Inventors

  • 👤 Chieko Mihara
  • 👤 Hiroyuki Sugata
  • 👤 Tsuyoshi Santo
  • 👤 Miki Tamura

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 07:09
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; Y; Y10; Y10S; Y10S430/00; Y10S430/146

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 171 words
An optical recording medium comprising a recording layer formed on a substrate containing an infrared-absorptive compound represented by the following formula (I) or (II) ##STR1374## wherein R 0 to R 7 each represent (a) a hydrogen atom or a monovalent organic residual group, at least one of R 0 to R 7 being a monovalent organic residual group having a fluorine atom, or (b) a group of atoms necessary for at least one of combinations R 0 and R 1 , R 2 and R 3 , R 4 and R 5 and R 6 and R 7 to form together with a nitrogen atom a substituted 5-membered ring having a fluorine atom, a substituted 6-membered ring having a fluorine atom or a substituted 7-membered ring having a fluorine atom, other combinations each being a hydrogen atom or a monovalent organic residual group; X.sup.⊖ represents an anionic residual group; in formula (I), "A" represents ##STR1375## and in formula (II), "B" represents ##STR1376## wherein n represents an integer of 1 or 2.
Claim 2
Dependent Claim 171 words
An optical recording medium comprising a recording layer formed on a substrate containing an infrared-absorptive compound represented by the following formula (I) or (II) ##STR1374## wherein R 0 to R 7 each represent (a) a hydrogen atom or a monovalent organic residual group, at least one of R 0 to R 7 being a monovalent organic residual group having a fluorine atom, or (b) a group of atoms necessary for at least one of combinations R 0 and R 1 , R 2 and R 3 , R 4 and R 5 and R 6 and R 7 to form together with a nitrogen atom a substituted 5-membered ring having a fluorine atom, a substituted 6-membered ring having a fluorine atom or a substituted 7-membered ring having a fluorine atom, other combinations each being a hydrogen atom or a monovalent organic residual group; X.sup.⊖ represents an anionic residual group; in formula (I), "A" represents ##STR1375## and in formula (II), "B" represents ##STR1376## wherein n represents an integer of 1 or 2.
Claim 3
Dependent Claim 48 words
The optical recording medium according to claim 1, wherein said monovalent organic residual group is a substituted alkyl group having a fluorine atom, a substituted alkenyl group having a fluorine atom, a substituted aralkyl group having a fluorine atom, or a substituted aryl group having a fluorine atom.
Claim 4
Dependent Claim 16 words
The optical recording medium according to claim 1, wherein said 5-membered ring is a pyrrolidine ring.
Claim 5
Dependent Claim 20 words
The optical recording medium according to claim 1, wherein said 6-membered ring is a piperidine ring or a tetrahydropyridine ring.
Claim 6
Dependent Claim 23 words
The optical recording medium according to claim 1, wherein said 7-membered ring is a cyclohexylamine ring represented by the following formula VII. ##STR1377##
Claim 7
Dependent Claim 91 words
An optical recording medium comprising a recording layer containing an infrared-absorptive compound represented by the formula (III) or (IV) ##STR1378## wherein R' 1 to R' 16 each represent a hydrogen atom or a monovalent organic residual group, or a group of atoms necessary for any combination of R' q and R' q+1 to form a substituted or unsubstituted 5-membered ring, a substituted or unsubstituted 6-membered ring or a substituted or unsubstituted 7-membered ring, wherein q is 1, 3, 5, 7, 9, 11 or 13; and X.sup.⊖ represents an anionic residual group.
Claim 8
Dependent Claim 91 words
An optical recording medium comprising a recording layer containing an infrared-absorptive compound represented by the formula (III) or (IV) ##STR1378## wherein R' 1 to R' 16 each represent a hydrogen atom or a monovalent organic residual group, or a group of atoms necessary for any combination of R' q and R' q+1 to form a substituted or unsubstituted 5-membered ring, a substituted or unsubstituted 6-membered ring or a substituted or unsubstituted 7-membered ring, wherein q is 1, 3, 5, 7, 9, 11 or 13; and X.sup.⊖ represents an anionic residual group.
Claim 9
Dependent Claim 92 words
An optical recording medium comprising a recording layer containing an infrared-absorptive compound represented by the following formula (V) or (VI) ##STR1379## wherein Z represents ##STR1380## R" 1 to R" 9 each represent a hydrogen atom or a monovalent organic residual group, or a group of atoms necessary for any combination of R" r and R" r+1 to form a substituted or unsubstituted 5-membered ring, a substituted or unsubstituted 6-membered ring or a substituted or unsubstituted 7-membered ring, wherein r is 1, 3, 5 or 7; and X.sup.⊖ represents an anionic residual group.
Claim 10
Dependent Claim 92 words
An optical recording medium comprising a recording layer containing an infrared-absorptive compound represented by the following formula (V) or (VI) ##STR1379## wherein Z represents ##STR1380## R" 1 to R" 9 each represent a hydrogen atom or a monovalent organic residual group, or a group of atoms necessary for any combination of R" r and R" r+1 to form a substituted or unsubstituted 5-membered ring, a substituted or unsubstituted 6-membered ring or a substituted or unsubstituted 7-membered ring, wherein r is 1, 3, 5 or 7; and X.sup.⊖ represents an anionic residual group.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1999-01-08 1999-07-10 2000-01-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-01-08 2003-07-10 2004-01-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-01-08 2007-07-10 2008-01-09 $7700.00 Window Closed / Lapsed

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