US4865949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical information recording medium
Assignee: Ricoh Co Ltd
•
Filing: 1988-04-20
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Granted: 1989-09-12
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Expires: 2008-04-20
Abstract
Abstract An optical information recording medium is disclosed, which comprises a pair of disc-shaped substrates, at least one of the substrates having a recording layer comprising an organic dye compound on one side thereof, which are disposed so as to face each other, with the recording layer positioned therebetween, with or without a space between the two substrates, by sealing with an adhesive agent comprising an alicyclic epoxy resin component having general formula ##STR1## where R 1 ˜R 9 each represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or halogen; and R represents (CH 2 ) n , where n is an integer of 1 to 4, ##STR2## and a composite catalyst comprising a photo-decomposition organic silicon compound and a metal complex.
Inventors
- 👤 Tetsu Yamamuro
- 👤 Yutaka Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:05
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/253; G11B7/2533; G11B7/256; G11B7/242; G11B7/243; G11B7/2433; G11B7/244; G11B7/246; G11B7/247; G11B7/2472; G11B7/2475; G11B7/258; G11B7/2585; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
An optical information recording medium comprising a pair of disc-shaped substrates, at least one of the substrates having a recording layer comprising an organic dye compound on one side thereof, which are disposed so as to face each other, with the recording layer positioned therebetween, with or without a space between the two substrates, by sealing with an adhesive agent comprising an alicyclic epoxy resin component having general formula ##STR18## where R 1 ˜R 9 each represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or halogen; and R represents (CH 2 ) n , where n is an integer of 1 to 4, ##STR19## and a composite catalyst comprising a photo-decomposition organic silicon compound, and a metal complex.
Claim 2
Dependent Claim
121 words
An optical information recording medium comprising a pair of disc-shaped substrates, at least one of the substrates having a recording layer comprising an organic dye compound on one side thereof, which are disposed so as to face each other, with the recording layer positioned therebetween, with or without a space between the two substrates, by sealing with an adhesive agent comprising an alicyclic epoxy resin component having general formula ##STR18## where R 1 ˜R 9 each represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or halogen; and R represents (CH 2 ) n , where n is an integer of 1 to 4, ##STR19## and a composite catalyst comprising a photo-decomposition organic silicon compound, and a metal complex.
Claim 3
Dependent Claim
19 words
The optical information recording medium as claimed in claim 1, wherein said organic dye compound is a cyanine dye.
Claim 4
Dependent Claim
19 words
The optical information recording medium as claimed in claim 1, wherein said organic dye compound is a merocyanine dye.
Claim 5
Dependent Claim
18 words
The optical information recording medium as claimed in claim 1, wherein said alicyclic epoxy resin component is ##STR20##
Claim 6
Dependent Claim
18 words
The optical information recording medium as claimed in claim 1, wherein said alicyclic epoxy resin component is ##STR21##
Claim 7
Dependent Claim
24 words
The optical information recording medium as claimed in claim 1, wherein said alicyclic epoxy resin component is selected from the group consisting of: ##STR22##
Claim 8
Dependent Claim
33 words
The optical information recording medium as claimed in claim 1, wherein said photo-decomposition organic silicon compound is selected from the group consisting of silyl peroxide, o-nitrobenzyl silyl ether, alkoxy silane and silyl ketone.
Claim 9
Dependent Claim
16 words
The optical information recording medium as claimed in claim 1, wherein said metal complex is tris(β-diketonato)aluminum.
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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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |