US4306015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic material
Assignee: Ilford Imaging UK Ltd
•
Filing: 1980-07-28
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Granted: 1981-12-15
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Expires: 2000-07-28
Abstract
Abstract A process for the production of an improved photographic image is provided which comprises imagewise exposing photographic material which comprises on a support base at least one light-sensitive negative-working silver halide emulsion layer containing a color coupler (receptor layer) and in which after color processing a negative dye image only is formed, there being associated therewith at least one light-sensitive negative-working silver halide emulsion layer containing at least one DIR compound (development inhibitor releasing compound) and in which after processing no photographic image is present (donor layer), developing the photographic material in a color photographic developing solution to form a negative silver image in the layer which comprises the DIR compound and a coupled compound with the DIR compound in the areas in which the silver has been developed, so releasing the DI compound imagewise from the DIR compound and allowing the DI compound to diffuse imagewise into the layer containing the color coupler thereby to modify color development in this layer by forming a modified negative silver image and hence a modified negative dye image in the layer which comprises the color coupler, and further processing the material so that no photographic image is present in the layer which comprises the DIR compound and no silver image is present in the layer which comprises the color coupler and the dye image.
Inventors
- 👤 Norman C. Haylett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:31
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3003; G03C7/3029; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
210 words
A process for the production of a photographic image which comprises imagewise exposing photographic material which comprises on a support base at least one light-sensitive negative working silver halide emulsion layer containing a colour coupler and in which after colour processing a negative dye image only is formed, there being associated therewith at least one light-sensitive negative-working silver halide emulsion containing at least one DIR compound and in which after processing no photographic image is present, developing the photographic material in a colour developing solution to form a negative silver image in the layer which comprises the DIR compound and a coupled compound with the DIR compound in the areas in which the silver has been developed, so releasing the DI compound imagewise from the DIR compound and allowing the DI compound to diffuse imagewise into the layer containing the colour coupler thereby to modify colour development in this layer by forming a modified negative silver image and hence a modified negative dye image in the layer which comprises the colour coupler, and further processing the material so that no photographic image is present in the layer which comprises the DIR compound and no silver image is present in the layer which comprises the colour coupler and the dye image.
Claim 2
Dependent Claim
210 words
A process for the production of a photographic image which comprises imagewise exposing photographic material which comprises on a support base at least one light-sensitive negative working silver halide emulsion layer containing a colour coupler and in which after colour processing a negative dye image only is formed, there being associated therewith at least one light-sensitive negative-working silver halide emulsion containing at least one DIR compound and in which after processing no photographic image is present, developing the photographic material in a colour developing solution to form a negative silver image in the layer which comprises the DIR compound and a coupled compound with the DIR compound in the areas in which the silver has been developed, so releasing the DI compound imagewise from the DIR compound and allowing the DI compound to diffuse imagewise into the layer containing the colour coupler thereby to modify colour development in this layer by forming a modified negative silver image and hence a modified negative dye image in the layer which comprises the colour coupler, and further processing the material so that no photographic image is present in the layer which comprises the DIR compound and no silver image is present in the layer which comprises the colour coupler and the dye image.
Claim 3
Dependent Claim
37 words
A process according to claim 1 wherein the DIR compound is a coupler which couples with the oxidation products of the colour developer both to release a DI compound and to yield a substantially colourless reaction product.
Claim 4
Dependent Claim
54 words
A process according to claim 1 wherein the DIR compound is a coupler which couples with the oxidation products of the colour developer both to release a DI compound and to yield a dye image which is either washed out of the layer or is destroyed in the layer during a subsequent processing step.
Claim 5
Dependent Claim
54 words
A process according to claim 1 wherein the DIR compound is a coupler which couples with the oxidation products of the colour developer both to release a DI compound and to yield a dye image, the effect of the image being counteracted by the presence of a colour coupler which becomes colourless on coupling.
Claim 6
Dependent Claim
37 words
A process according to claim 1 wherein the DIR coumpound is a hydroquinone derivative which reacts with the oxidation products of the colour developer both to release a DI compound and to yield a colourless reaction product.
Claim 7
Dependent Claim
78 words
A process according to claim 1 wherein the DIR-compound is a DIR-coupler of the formula ##STR23## wherein R 1 is substituted phenyl which contains a ballasting alkyl group, R 2 represents the atoms necessary to complete a five or six membered heterocyclic ring system which may be further substituted or benzannelated and R 3 is an aryl or heterocyclic radical, any of which ring systems may be further substituted, the group --S--R 3 being a development inhibiting group.
Claim 8
Dependent Claim
87 words
Photographic material which comprises on a support base at least one light-sensitive negative working silver halide emulsion layer containing a colour coupler and in which after processing a photographic dye image only is formed, there being associated therewith at least one light-sensitive negative working silver halide emulsion layer in which after processing no photographic dye image is formed and which comprises at least one DIR compound which after reaction with the oxidation products of a colour developer releases a DI compound and forms a substantially colourless product.
Claim 9
Dependent Claim
87 words
Photographic material which comprises on a support base at least one light-sensitive negative working silver halide emulsion layer containing a colour coupler and in which after processing a photographic dye image only is formed, there being associated therewith at least one light-sensitive negative working silver halide emulsion layer in which after processing no photographic dye image is formed and which comprises at least one DIR compound which after reaction with the oxidation products of a colour developer releases a DI compound and forms a substantially colourless product.
Claim 10
Dependent Claim
14 words
Photograhic material according to claim 7 wherein the DIR compound is a DIR coupler.
Claim 11
Dependent Claim
37 words
Photographic material according to claim 7 wherein the DIR compound is a coupler with couples with the oxidation products of the colour developer both to release a DI compound and to yield a substantially colourless reaction product.
Claim 12
Dependent Claim
54 words
Photographic material according to claim 7 wherein the DIR compound is a coupler which couples with the oxidation products of the colour developer both to release a DI compound and to yield a dye image which is either washed out of the layer or is destroyed in the layer during a subsequent processing step.
Claim 13
Dependent Claim
54 words
Photographic material according to claim 7 wherein the DIR compound is a coupler which couples with the oxidation products of the colour developer both to release a DI compound and to yield a dye image, the effect of the image being counteracted by the presence of a colour coupler which becomes colourless on coupling.
Claim 14
Dependent Claim
37 words
Photographic material according to claim 7 wherein the DIR compound is a hydroquinone derivative which reacts will the oxidation products of the colour developer both to release a DI compound and to yield a colourless reaction product.
Claim 15
Dependent Claim
131 words
Colour photographic material according to claim 7 which comprises at least one blue-light sensitive negative working silver halide emulsion layer containing a yellow dye-forming coulour coupler, a filter layer, at least one green-light sensitive negative working silver halide emulsion layer containing a magenta dye-forming colour coupler and at least one red-light sensitive negative working silver halide emulsion layer containing a cyan dye-forming colour coupler and a support base, there being associated with at least one said green-light sensitive layer a light sensitive silver halide emulsion layer which is sensitive to red light in which after processing no photographic dye image is formed and which comprises a least one DIR compound which after reaction with the oxidation products of a colour developer releases a DI compound and forms a substantially colourless product.
Claim 16
Dependent Claim
44 words
Colour photographic material according to claim 13 wherein there is only one green-light sensitive layer and the light sensitive emulsion layer which is sensitive to red light and which contains the DIR compound is present between the filter layer and the green-light sensitive layer.
Claim 17
Dependent Claim
35 words
Colour photographic material according to claim 13 wherein there are two green-light sensitive layers and the light sensitive emulsion layer which is sensitive to red light and which contains the DIR compound is present therebetween.
Claim 18
Dependent Claim
129 words
Colour photographic material according to claim 7 which comprises at least one blue-light sensitive negative working silver halide emulsion layer containing a yellow dye-forming colour coupler, a filter layer, at least one green-light sensitive negative working silver halide emulsion layer containing a magenta dye-forming colour coupler and at least one red-light sensitive negative working silver halide emulsion layer containing a cyan dye-forming colour coupler and a support base, there being associated with at least one said red-light sensitive layer a light sensitive silver halide emulsion layer which is green-light sensitive in which after processing no photographic dye image is formed and which comprises at least one DIR compound which after reaction with the oxidation products of a colour developer releases a DI compound and forms a substantially colourless product.
Claim 19
Dependent Claim
44 words
Colour photographic material according to claim 16 wherein there is only one red-light sensitive layer and the light sensitive silver halide emulsion layer which is green-light sensitive and which contains a DIR compound is present between the red-light sensitive layer and the support base.
Claim 20
Dependent Claim
35 words
Colour photographic material according to claim 16 wherein there are two red-light sensitive layers and the light sensitive silver halide emulsion layer which is green-light sensitive and which contains a DIR compound is present therebetween.
Claim 21
Dependent Claim
132 words
Colour photographic material according to claim 7 which comprises at least one blue-light sensitive negative working silver halide emulsion layer containing a yellow dye-forming colour coupler, a filter layer, at least one green-light sensitive negative working silver halide emulsion layer containing a magenta dye-forming colour coupler, at least one red-light sensitive negative working silver halide emulsion layer containing a cyan dye forming colour coupler and a support base, there being placed between the green-light sensitive layer and the red light sensitive layer a light sensitive halide emulsion layer which is blue/green light sensitive, in which after processing no photographic dye image is formed and which comprises at least one DIR compound which after reaction with the oxidation products of a colour developer releases a DI compound and forms a substantially colourless product.
Claim 22
Dependent Claim
79 words
Colour photographic material according to claim 8, wherein the DIR-coupler is a compound of the formula ##STR24## wherein R 1 is substituted phenyl which contains a ballasting alkyl group, R 2 represents the atoms necessary to complete a five or six membered heterocyclic ring system which may be further substituted or benzannelated and R 3 is an aryl or heterocyclic radical, any of which ring systems may be further substituted, the group --S--R 3 being a development inhibiting group.
Claim 23
Dependent Claim
85 words
Colour photographic material according to claim 20, wherein R 1 is a group of the formulae ##STR25## wherein L is --SO 2 -- or --CO-- and R 4 is a ballasting alkyl group or contains an optionally substituted ballasting alkyl group of at least 10 carbon atoms, R 2 represents the atoms necessary to complete a tetrazole, triazole, pyrazole, imidazole or benzimidazol ring system optionally substituted by alkyl or alkylthio and R 3 is optionally substituted pyrimidyl, thiadiazolyl, triazinyl, tetrazolyl, triazolyl, pyridyl, phenyl or benzthiazolyl.
Claim 24
Dependent Claim
21 words
Colour photographic material according to claim 21, wherein R 3 is pyrimidyl, thiadiazolyl, triazinyl, triazolyl, tetrazolyl or an optionally substituted phenyl.
Claim 25
Dependent Claim
116 words
Colour photographic material according to claim 21 wherin R 1 is a group of the formulae ##STR26## wherein L is --SO 2 -- or --CO-- and R 5 is alkyl of 10 to 18 carbon atoms, R 2 represents the atoms necessary to complete an optionally alkyl of 1 to 4 carbon atoms or alkylthio of 1 to 8 carbon atoms substituted tetrazole, triazole, pyrazole or imidazole or optionally nitro substituted benzimidazole ring system and R 3 is pyrimidyl, thiadiazolyl, triazinyl, tetrazolyl or triazolyl, pyridyl optionally substituted by alkyl of 1 to 4 carbon atoms or hydroxyl or phenyl optionally substituted by carboxyl, nitro or acylamino, wherein acyl contains 1 to 18 carbon atoms, or benzthiazolyl.
References Cited (Backward Citations)
US3227551A
Cited
GB1224555A
Cited
US3632345A
Cited
US3928041A
Cited
US3932185A
Cited
GB1484273A
Cited
US4015988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |