US4529684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition suitable for use in the production of laser beam recording/reading means
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1984-11-15
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Granted: 1985-07-16
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Expires: 2004-11-15
Abstract
Abstract A composition obtained by incorporating a benzenedithiol nickel complex in a liquid formulation containing a solvent and, as a binder, an organic polymer or containing a solvent, organic color-producing substance, acidic substance and binder suitable for producing a laser beam recording/reading means having an absorption band in the region of 800-950 nm.
Inventors
- 👤 Katsuyoshi Sasagawa
- 👤 Eiichi Noda
- 👤 Masao Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:50
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/337; B41M5/3375; G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/245; G11B7/246; G11B7/249; G11B7/2492; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
99 words
Laser beam recording method which comprises irradiating a semiconductor laser beam of a wavelength of 800 to 950 NM onto a recording means which comprises a recording medium layer coated on a substrate, said layer comprising a benzenedithiol nickel complex represented by general formula (I): ##STR3## wherein X is a hydrogen atom, a chlorine atom, a bromine atom or a methyl group, N is an integer of 1 to 4, and A is a quaternary ammonium group, and an organic polymer, thereby fusing, evaporating or sublimating the benzenedithiol nickel complex at the irradiated parts in the recording medium layer.
Claim 2
Dependent Claim
99 words
Laser beam recording method which comprises irradiating a semiconductor laser beam of a wavelength of 800 to 950 NM onto a recording means which comprises a recording medium layer coated on a substrate, said layer comprising a benzenedithiol nickel complex represented by general formula (I): ##STR3## wherein X is a hydrogen atom, a chlorine atom, a bromine atom or a methyl group, N is an integer of 1 to 4, and A is a quaternary ammonium group, and an organic polymer, thereby fusing, evaporating or sublimating the benzenedithiol nickel complex at the irradiated parts in the recording medium layer.
Claim 3
Dependent Claim
17 words
Laser beam recording method according to claim 1 wherein the organic polymer is nitrocellulose or chlorinated polyethylene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |