Patent US4353974A successfully refreshed from Google Patents.
US4353974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of photographic images and photographic materials used in this process
Assignee: Ha Whitten & Co
•
Filing: 1981-02-23
•
Granted: 1982-10-12
•
Expires: 2001-02-23
Abstract
Abstract A process for the production of a photographic image which comprises (a) imagewise exposing a photographic assembly which comprises at least during a silver halide developing step, in order optionally a supercoat layer, at least one silver halide emulsion layer, a layer containing a layer substantive hydroxypyridone azamethine compound of the general formula ##STR1## wherein R 1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl, amino or heterocyclic radical, Y represents hydrogen or hydroxy, --CN, --COOR 1 , --CONR 1 R 2 or --COR 1 or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical and Z is hydrogen or is --CN, --COOR 3 , --CONR 3 R 4 , --SO 3 H, --SO 3 - or --COR 3 , where R 1 , R 2 , R 3 and R 4 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical, and E represents the atoms necessary to complete an optionally substituted heterocyclic or aromatic ring, and a support, there being optionally one or more interlayers between each of said components, (b) treating the exposed photographic assembly with an aqueous alkaline processing bath, containing a silver halide developer and (c) in the non-latent image areas, allowing the silver halide developer to diffuse in a counter-imagewise manner from the silver halide emulsion layer(s) to the layer containing the compound of formula (1) and there to bleach the compound to form a photographic dye image. The developers used in this process exhibit an increased stability against oxidizing agents.
Inventors
- 👤 Terence C. Webb
- 👤 Patrick D. P. Thomas
- 👤 William E. Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C5/00; G03C5/16; G03C5/26; G03C5/29; G03C5/30; G03C5/3028; G03C7/00; G03C7/28; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
341 words
A process for the production of a photographic image which comprises the steps of (a) imagewise exposing a photographic assembly which comprises at least during a silver halide developing step, in order optionally a supercoat layer, at least one silver halide emulsion layer, a layer containing a layer substantive hydroxypyridone azamethine compound of the formula ##STR20## wherein R 1 is hydrogen, optionally substituted alkyl, aralkyl, cycloalkyl or aryl, or an optionally substituted heterocyclic radical or an amino group, Y is hydrogen, hydroxyl, cyano, --COOR 1 , --CONR 1 R 2 or --COR 1 , optionally substituted alkyl, aralkyl, cycloalkyl, aryl or an optionally substituted heterocyclic radical, Z is hydrogen or is cyano, --COOR 3 , --CONR 3 R 4 , --SO 3 H, --SO 3 - or --COR 3 , where R 1 , R 2 , R 3 and R 4 each independently are hydrogen, optionally substituted alkyl, aralkyl, cycloalkyl or aryl or an optionally substituted heterocyclic radical, and E represents the atoms necessary to complete an optionally substituted heterocyclic or aromatic ring, and a support, there being optionally one or more interlayers between each of said components, (b) treating the exposed photographic assembly with an aqueous alkaline processing bath so as to provide in the silver halide emulsion layer or layers a solution or dispersion of a silver halide developer compound selected from the group consisting of a polyhydroxypheonol, an aminoaniline an aminophenol, glycine, a 1-phenyl-3-pyrazolidinone, ascorbic acid or a compound of the formulae ##STR21## wherein R 20 is hydrogen, alkyl having 1 to 4 carbon atoms or phenyl, R 21 , R 22 , R 23 and R 24 are each hydrogen, methyl or ethyl and Y is --O-- or --NH--, thereby to develop the latent silver image in the silver halide emulsions(s), and (c) in the non-latent image areas allowing the silver halide developer to diffuse in a counter-imagewise manner from the silver halide emulsion layer(s) to the layer containing the compound of formula (1) and there to bleach the compound to form a photographic dye image.
Claim 2
Dependent Claim
341 words
A process for the production of a photographic image which comprises the steps of (a) imagewise exposing a photographic assembly which comprises at least during a silver halide developing step, in order optionally a supercoat layer, at least one silver halide emulsion layer, a layer containing a layer substantive hydroxypyridone azamethine compound of the formula ##STR20## wherein R 1 is hydrogen, optionally substituted alkyl, aralkyl, cycloalkyl or aryl, or an optionally substituted heterocyclic radical or an amino group, Y is hydrogen, hydroxyl, cyano, --COOR 1 , --CONR 1 R 2 or --COR 1 , optionally substituted alkyl, aralkyl, cycloalkyl, aryl or an optionally substituted heterocyclic radical, Z is hydrogen or is cyano, --COOR 3 , --CONR 3 R 4 , --SO 3 H, --SO 3 - or --COR 3 , where R 1 , R 2 , R 3 and R 4 each independently are hydrogen, optionally substituted alkyl, aralkyl, cycloalkyl or aryl or an optionally substituted heterocyclic radical, and E represents the atoms necessary to complete an optionally substituted heterocyclic or aromatic ring, and a support, there being optionally one or more interlayers between each of said components, (b) treating the exposed photographic assembly with an aqueous alkaline processing bath so as to provide in the silver halide emulsion layer or layers a solution or dispersion of a silver halide developer compound selected from the group consisting of a polyhydroxypheonol, an aminoaniline an aminophenol, glycine, a 1-phenyl-3-pyrazolidinone, ascorbic acid or a compound of the formulae ##STR21## wherein R 20 is hydrogen, alkyl having 1 to 4 carbon atoms or phenyl, R 21 , R 22 , R 23 and R 24 are each hydrogen, methyl or ethyl and Y is --O-- or --NH--, thereby to develop the latent silver image in the silver halide emulsions(s), and (c) in the non-latent image areas allowing the silver halide developer to diffuse in a counter-imagewise manner from the silver halide emulsion layer(s) to the layer containing the compound of formula (1) and there to bleach the compound to form a photographic dye image.
Claim 3
Dependent Claim
119 words
A process according to claim 1 wherein the compound has the formula ##STR22## where R 1 , X and Z have the meanings assigned to them above, R 2 , R 3 , R 4 each independently are hydrogen, halogen, optionally substituted alkyl or cycloalkyl, or alkoxy, and R 5 and R 6 each independently are hydrogen or optionally substituted alkyl, aralkyl, cycloalkyl or aryl or an optionally substituted heterocyclic radical or R 5 and R 6 together with the nitrogen atom to which they are attached form a 5- or 6-membered ring, or R 3 and R 5 together with the nitrogen atom and R 5 and R 6 together with the nitrogen atom form two condensed rings.
Claim 4
Dependent Claim
35 words
A process according to claim 1 wherein Z is cyano, --COOR 3 , --CONR 3 R 4 or --COR 3 where R 3 and R 4 have the meanings assigned to them in claim 1.
Claim 5
Dependent Claim
10 words
A process according to claim 3 wherein Z is cyano.
Claim 6
Dependent Claim
20 words
A process according to claim 1 wherein R 1 is hydrogen or alkyl having from 1 to 4 carbon atoms.
Claim 7
Dependent Claim
11 words
A process according to claim 1 wherein R 1 is hydrogen.
Claim 8
Dependent Claim
17 words
A process according to claim 1 wherein Y is alkyl having from 1 to 4 carbon atoms.
Claim 9
Dependent Claim
18 words
A process according to claim 2 wherein R 2 , R 3 and R 4 are each hydrogen.
Claim 10
Dependent Claim
29 words
A process according to claim 2 wherein R 5 and R 6 are the same and are alkyl or alkoxy groups both having from 1 to 4 carbon atoms.
Claim 11
Dependent Claim
38 words
A process according to claim 2 wherein the dyestuff has the formula ##STR23## wherein R 1 , R 2 , R 3 and R 4 , Y and Z have the meanings assigned to them in claim 2.
Claim 12
Dependent Claim
31 words
A process according to claim 1 wherein the dyestuff has the formula ##STR24## where each of R 14 , R 15 , R 16 and R 17 are methyl or ethyl.
Claim 13
Dependent Claim
59 words
A process according to claim 1 wherein the dyestuff has the formula ##STR25## where R 14 and R 15 have the meanings assigned to them in claim 11, R 19 is alkyl having from 1 to 4 carbon atoms, R 20 is alkyl or aryl and R 18 is hydrogen or alkyl having from 1 to 4 carbon atoms.
Claim 14
Dependent Claim
22 words
A process according to claim 1 wherein the dyestuff is present in a layer of the photographic assembly as a solid dispersion.
Claim 15
Dependent Claim
18 words
A process according to claim 1 wherein the silver halide developer is hydroquinone or a derivative of hydroquinone.
Claim 16
Dependent Claim
18 words
A process according to claim 1 wherein a mixture of two or more silver halide developers is used.
Claim 17
Dependent Claim
17 words
A process according to claim 15 wherein the mixture of silver halide developers comprises hydroquinone and 1-phenyl-3-pyrazolidinone.
Claim 18
Dependent Claim
48 words
A process according to claim 1 wherein the silver halide developer is present initially in the photographic assembly before exposure and processing thereof, the silver halide developer being on the side of the silver halide emulsion layer remote from the layer which comprises the dyestuff of formula (1).
Claim 19
Dependent Claim
17 words
A process according to claim 17 wherein the silver halide developer is present as a solid dispersion.
Claim 20
Dependent Claim
17 words
A process according to claim 17 wherein the silver halide developer is hydroquinone or a derivative thereof.
Claim 21
Dependent Claim
39 words
A process according to claim 1 wherein the photographic assembly is prepared as a single assembly which contains the supercoat, the silver halide emulsion layer and the layer which contains a compound of formula (1) coated on the support.
Claim 22
Dependent Claim
17 words
A process according to claim 20 wherein the aqueous alkaline processing bath is applied to the supercoat.
Claim 23
Dependent Claim
38 words
A process according to claim 20 wherein in the photographic assembly the silver halide emulsion layer and the layer which contains a compound of formula (1) are adjacent and after processing the dye image reinforces the silver image.
Claim 24
Dependent Claim
39 words
A process according to claim 20 or wherein in the photographic assembly used there is either a stripping layer or a stripping position between the silver halide emulsion layer(s) and the layer which contains a compound of formula (1).
Claim 25
Dependent Claim
13 words
A process according to claim 23 wherein the stripping layer comprises phthalated gelatin.
Claim 26
Dependent Claim
26 words
A process according to claim 1 wherein in the photographic assembly there is at least one light opaque layer adjacent to a silver halide emulsion layer.
Claim 27
Dependent Claim
24 words
A process according to claim 25 wherein there is one silver halide emulsion layer and there is a light-opaque layer on each side thereof.
Claim 28
Dependent Claim
36 words
A process according to claims 1 or 24 wherein in the photographic assembly there is a white reflecting layer adjacent to the layer containing a compound of formula (1) on the side remote from the support.
Claim 29
Dependent Claim
40 words
A process according to claim 1 wherein the photograhic assembly contains in order a supercoat layer, a light opaque layer, a silver halide emulsion layer, a light opaque layer, a layer containing a compound of formula (1) and a support.
Claim 30
Dependent Claim
32 words
A process according to claim 28 wherein there is present between the second mentioned light opaque layer and the layer containing a compound of formula (1) a stripping position or stripping layer.
Claim 31
Dependent Claim
30 words
A process according to claim 28 wherein there is present between the second mentioned light opaque layer and the layer containing a compound of formula (1) a white reflecting layer.
Claim 32
Dependent Claim
25 words
A process according to claim 30 wherein there is present between the second mentioned light opaque layer and the white reflecting layer a stripping position.
Claim 33
Dependent Claim
40 words
A process according to claim 1 wherein the photographic assembly is prepared as two sections, one section comprising the supercoat and the silver halide emulsion layer(s) and the other section comprising the layer which contains a compound of formula (1).
Claim 34
Dependent Claim
18 words
A process according to claim 1 wherein the silver halide emulsion is a negative working silver halide emulsion.
Claim 35
Dependent Claim
18 words
A process according to claim 1 wherein the silver halide emulsion is a direct positive silver halide emulsion.
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) | 1985-10-11 | 1986-04-12 | 1986-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-11 | 1990-04-12 | 1990-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-11 | 1994-04-12 | 1994-10-12 | $7700.00 | Window Closed / Lapsed |