US3620743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicles for vesicular photographic materials
Assignee: NORMAN T NOTLEY
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Filing: 1969-12-15
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Granted: 1971-11-16
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Expires: 1989-12-15
Abstract
Abstract This invention is directed to a light-sensitive vesicularimaging composition comprising an essentially chloroacrylonitrile polymer, including copolymers of chloroacrylonitrile with a different vinyl monomer and intimate mixtures with other organic materials, coated as a thin film and having intimately dispersed therein a sensitizer which liberates gas on irradiation. Upon irradiation of this novel composition with a pattern of actinic radiation, gas released in the selected areas may be developed to a superior image by overall heating.
Inventors
- 👤 Norman T Notley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:47
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
24 words
A material according to claim 1 wherein said light decomposable solid agent is a diazo compound capable of generating nitrogen upon exposure to radiation.
Claim 2
Dependent Claim
48 words
A material according to claim 1 wherein said polymeric component is essentially one of the indicated alphachloroacrylonitrile homopolymers or copolymers in intimate mixture with polymeric organic material, and said organic material is one chosen from the group consisting of cellulose acetate, polyalphamethylstyrene, polyvinylidene chloride acrylonitrile copolymer and polymethylmethacrylate.
Claim 3
Dependent Claim
33 words
A material according to claim 1 wherein the said organic material is present to an extent less than 50 percent by weight as based on the total weight of the said polymeric components.
Claim 4
Dependent Claim
33 words
A material according to claim 1 wherein a copolymer of alphachloroacrylonitrile and a different vinyl monomer chosen from the group consisting of styrene, vinyl toluene, alphamethylstyrene and acrylonitrile is used in said film.
Claim 5
Dependent Claim
25 words
A material according to claim 3 wherein said polymeric component comprises approximately 75 parts polyalphachloroacrylonitrile in intimate mixture with 25 parts by weight cellulose acetate.
Claim 6
Dependent Claim
29 words
A material according to claim 3 wherein said polymeric component comprises approximately 91 parts polyalphachloroacrylonitrile by weight in intimate mixture with 9 parts by weight polyvinylidene chloride acrylonitrile copolymer.
Claim 7
Dependent Claim
13 words
A material according to claim 1 wherein said polymeric component is alphachloroacrylonitrile homopolymer.
Claim 8
Dependent Claim
31 words
A method of preparing vesicular images which comprises irradiating imagewise a light-sensitive record-furnishing material of claim 1 with actinic light and thereafter heating said record-furnishing material to develop a vesicular image.
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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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |