US3877941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitro-substituted aryl amide amine progenitor and the use thereof in photographic processes
Assignee: Agfa Gevaert NV
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Filing: 1973-06-29
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Granted: 1975-04-15
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Expires: 1993-06-29
Abstract
Abstract IN WHICH R1 and R2 have the significance as defined above. IN WHICH: Z represents the necessary atoms to close an aromatic ring or ring system including such ring or ring system in substituted state, X represents hydrogen or an organic group, and EACH OF R1 and R2 (same or different) represent hydrogen or an organic group, or R1 and R2 together represent the necessary atoms to close a nitrogen-containing ring or ring system, said photosensitive amine progenitor being capable of splitting off photolytically the compound A photographic process, wherein an amine is information-wise produced by the information-wise exposure to activating electromagnetic radiation of a recording material containing in or on a support a photosensitive amine progenitor corresponding to the following general formula:
Inventors
- 👤 Joachim Werner Lohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
48 words
IN A PHOTOGRAPHIC PROCESS IN WHICH AN AMINE IS IMAGEWISE RELEASED FROM AN AMINE SOURCE CARRIED ON A SUPPORT AND INCLUDING THE STEP OF IMAGEWISE EXPOSING SAID SUPPORT TO ACTIVATING RADIATION, THE IMPROVEMENT WHEREIN SAID AMINE SOURCE IS A PHOTOSENSITIVE AMINE PROGENITOR CORRESPONDING TO THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
48 words
IN A PHOTOGRAPHIC PROCESS IN WHICH AN AMINE IS IMAGEWISE RELEASED FROM AN AMINE SOURCE CARRIED ON A SUPPORT AND INCLUDING THE STEP OF IMAGEWISE EXPOSING SAID SUPPORT TO ACTIVATING RADIATION, THE IMPROVEMENT WHEREIN SAID AMINE SOURCE IS A PHOTOSENSITIVE AMINE PROGENITOR CORRESPONDING TO THE FOLLOWING GENERAL FORMULA:
Claim 3
Dependent Claim
17 words
A photographic material comprising a support carrying a photosensitive amine progenitor corresponding to the following general formula:
Claim 4
Dependent Claim
17 words
A photographic material comprising a support carrying a photosensitive amine progenitor corresponding to the following general formula:
Claim 5
Dependent Claim
16 words
A process according to claim 1, wherein R1 is hydrogen and R2 is a p-dialkylaminophenyl group.
Claim 6
Dependent Claim
16 words
A process according to claim 1, wherein R1 is hydrogen and R2 is an alkyl group.
Claim 7
Dependent Claim
42 words
A process according to claim 3, wherein the photosensitive amine progenitor in the exposure step splits off a p-phenylenediamine, which is capable of forming an indophenol or azamethine dye by oxidative coupling with a phenol, naphthol or active methylene type colour coupler.
Claim 8
Dependent Claim
27 words
A process according to claim 5, wherein the oxidative coupling takes place by means of an oxidant incorporated in the recording material, said oxidant being peroxysebacic acid.
Claim 9
Dependent Claim
25 words
A process according to claim 6 wherein the peroxysebacic acid is incorporated in the recording material in the form of an inclusion compound in urea.
Claim 10
Dependent Claim
20 words
A process according to claim 1 wherein the photosensitive amine progenitor is present in a binder layer on said support.
Claim 11
Dependent Claim
36 words
A photographic material according to claim 2 wherein said photosensitive amine progenitor yields an amine effective as a color developer and said progenitor is present in admixture with a phenol, naphthol and/or active methylene type coupler.
Claim 12
Dependent Claim
19 words
A photographic material according to claim 9, wherein the photosensitive amine progenitor is present in admixture with peroxipebacic acid.
References Cited (Backward Citations)
US3342597A
Cited
US3719492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |