US3986880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free radical photosensitive materials
Assignee: Horizons Inc
•
Filing: 1974-08-23
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Granted: 1976-10-19
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Expires: 1994-08-23
Abstract
Abstract The keeping qualities (shelf life), and photographic speed of non-silver free radical photosensitive materials are increased by the incorporation of at least one of each of three classes of additives, namely: (1) a stabilizer, usually an alcohol or a phenol; (2) a speed enhancer; and (3) a compound which enhances the capability of heat fixing of films containing both (1) and (2).
Inventors
- 👤 Eugene Wainer
- 👤 John E. Shirey
- 👤 Lothar Ramins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/675
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
110 words
In a non-silver photosensitive composition consisting essentially of: at least one activator compound which releases free radicals when exposed to a suitable dose of radiation and which is selected from the group consisting of organic compounds which contain at least two chlorine, bromine or iodine atoms, organic compounds which contain a mercapto --SH group, and organic compounds which contain both halogen and sulfur; and at least one leuco dye which prints out a visible image when in the presence of free radicals said activator compound and said leuco dye being carried in a film forming resin binder; the improvement which comprises providing said composition with the following three additional constituents;
Claim 2
Dependent Claim
110 words
In a non-silver photosensitive composition consisting essentially of: at least one activator compound which releases free radicals when exposed to a suitable dose of radiation and which is selected from the group consisting of organic compounds which contain at least two chlorine, bromine or iodine atoms, organic compounds which contain a mercapto --SH group, and organic compounds which contain both halogen and sulfur; and at least one leuco dye which prints out a visible image when in the presence of free radicals said activator compound and said leuco dye being carried in a film forming resin binder; the improvement which comprises providing said composition with the following three additional constituents;
Claim 3
Dependent Claim
47 words
at least one aromatic -OH compound which is solid at room temperature and which is selected from the group consisting of polyhydric alcohols and polyhydric phenols; 2. at least one plasticizer selected from the group consisting of plasticizers for polystyrene and/or acrylic ester resins; and 3. triphenylcarbinol.
Claim 4
Dependent Claim
47 words
at least one aromatic -OH compound which is solid at room temperature and which is selected from the group consisting of polyhydric alcohols and polyhydric phenols; 2. at least one plasticizer selected from the group consisting of plasticizers for polystyrene and/or acrylic ester resins; and 3. triphenylcarbinol.
Claim 5
Dependent Claim
13 words
The composition of claim 1 dispersed or dissolved in a polymeric film-forming binder.
Claim 6
Dependent Claim
31 words
The cmposition of claim 1 wherein the free radical source is an organic compound in which at least three halogen atoms other than fluorine are attached to a single carbon atom.
Claim 7
Dependent Claim
18 words
The composition of claim 1 wherein the plasticizer is selected from the group consisting of trialkyl- and triaryl-phosphates.
Claim 8
Dependent Claim
13 words
The composition of claim 1 wherein the aromatic -OH compound is a polyhydroxyphenol.
Claim 9
Dependent Claim
17 words
The composition of claim 1 wherein the color former is selected from the family of the 1,1-bis(p-dialkylaminophenyl)ethylenes.
Claim 10
Dependent Claim
19 words
The composition of claim 1 wherein the color former is selected from the group consisting of 1,1-bis(p-dimethylaminophenyl)ethylene and 1,1-bis(p-diethylaminophenyl)ethylene.
Claim 11
Dependent Claim
25 words
The composition of claim 1 wherein the color formers are taken from the group of a combination of the leuco triphenylmethane dyes and the dialkylstyrylquinolines.
Claim 12
Dependent Claim
14 words
The composition of claim 1 wherein the color former comprises leucocrystal violet and dimethylstyrylquinoline.
Claim 13
Dependent Claim
15 words
The composition of claim 1 wherein the color former comprises leuco malachite green and diethylstyrylquinoline.
Claim 14
Dependent Claim
24 words
The composition of claim 1 wherein the color formers are taken from the group of a combination of the leuco dihydroanthracenes and the dialkylstyrylquinolines.
References Cited (Backward Citations)
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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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |