US4158715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser recording film with opaque coating
Assignee: LIBRASCOPE Corp A CORP OF DELAWARE
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Filing: 1978-01-17
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Granted: 1979-06-19
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Expires: 1998-01-17
Abstract
Abstract A real-time laser recording film having a plastic/dye coating on one side thereof provides improved image sharpness and visual qualities. The film fabrication is compatible with continuous production techniques to provide an economical, high quality film.
Inventors
- 👤 Michael R. Smith
- 👤 David B. Congleton
- 👤 Arthur S. Diamond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:50
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/18; B23K26/009; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31786
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
45 words
A laser recording film comprising: a flexible film substrate transparent to noncoherent projection radiation; a coating of self oxidizing nitrocellulose on said film substrate; said nitrocellulose having homogeneously dissolved dye therein to cause said nitrocellulose to have a neutral black spectral transmissivity to laser radiation.
Claim 2
Dependent Claim
45 words
A laser recording film comprising: a flexible film substrate transparent to noncoherent projection radiation; a coating of self oxidizing nitrocellulose on said film substrate; said nitrocellulose having homogeneously dissolved dye therein to cause said nitrocellulose to have a neutral black spectral transmissivity to laser radiation.
Claim 3
Dependent Claim
16 words
The laser recording film in accordance with claim 1 wherein said nitrocellulose coating includes a plasticizer.
Claim 4
Dependent Claim
14 words
The laser recording film according to claim 2 wherein said plasticizer is tricresyl phosphate.
Claim 5
Dependent Claim
45 words
The laser recording film according to claim 2 wherein said dye constitutes 10 to 60 percent by weight of said coating, said nitrocellulose constitutes 20 to 40 percent by weight of said coating, and said plasticizer constitutes 14 to 19% by weight of said coating.
Claim 6
Dependent Claim
24 words
The laser recording film in accordance with claim 1 wherein said flexible transparent substrate is selected from the group consisting of polyester or polycarbonate.
Claim 7
Dependent Claim
46 words
A laser recording film comprising: a transparent film substrate selected from the group consisting of polyester or polycarbonate, a coating of self oxidizing nitrocellulose on said film substrate; said nitrocellulose having uniformly dissolved dye therein to cause said nitrocellulose to have a neutral black spectral transmissivity.
Claim 8
Dependent Claim
46 words
A laser recording film comprising: a transparent film substrate selected from the group consisting of polyester or polycarbonate, a coating of self oxidizing nitrocellulose on said film substrate; said nitrocellulose having uniformly dissolved dye therein to cause said nitrocellulose to have a neutral black spectral transmissivity.
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) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |