GB2280276A - Photographic colour element - Google Patents
Photographic colour element Download PDFInfo
- Publication number
- GB2280276A GB2280276A GB9315372A GB9315372A GB2280276A GB 2280276 A GB2280276 A GB 2280276A GB 9315372 A GB9315372 A GB 9315372A GB 9315372 A GB9315372 A GB 9315372A GB 2280276 A GB2280276 A GB 2280276A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- red
- negative film
- trap
- photographic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000839 emulsion Substances 0.000 claims abstract description 39
- 229910052709 silver Inorganic materials 0.000 claims abstract description 39
- 239000004332 silver Substances 0.000 claims abstract description 39
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000003112 inhibitor Substances 0.000 claims abstract description 11
- 239000012634 fragment Substances 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 3
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims 2
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 36
- 238000011160 research Methods 0.000 description 18
- -1 silver halide Chemical class 0.000 description 14
- 239000000975 dye Substances 0.000 description 12
- 108010010803 Gelatin Proteins 0.000 description 7
- 229920000159 gelatin Polymers 0.000 description 7
- 239000008273 gelatin Substances 0.000 description 7
- 235000019322 gelatine Nutrition 0.000 description 7
- 235000011852 gelatine desserts Nutrition 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 239000007844 bleaching agent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- ILKZXYARHQNMEF-UHFFFAOYSA-N (4-azaniumyl-3-methylphenyl)-ethyl-(2-methoxyethyl)azanium;4-methylbenzenesulfonate Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1.CC1=CC=C(S(O)(=O)=O)C=C1.COCCN(CC)C1=CC=C(N)C(C)=C1 ILKZXYARHQNMEF-UHFFFAOYSA-N 0.000 description 1
- KAMCBFNNGGVPPW-UHFFFAOYSA-N 1-(ethenylsulfonylmethoxymethylsulfonyl)ethene Chemical compound C=CS(=O)(=O)COCS(=O)(=O)C=C KAMCBFNNGGVPPW-UHFFFAOYSA-N 0.000 description 1
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 1
- ORWQBKPSGDRPPA-UHFFFAOYSA-N 3-[2-[ethyl(methyl)amino]ethyl]-1h-indol-4-ol Chemical compound C1=CC(O)=C2C(CCN(C)CC)=CNC2=C1 ORWQBKPSGDRPPA-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- MPLZNPZPPXERDA-UHFFFAOYSA-N [4-(diethylamino)-2-methylphenyl]azanium;chloride Chemical compound [Cl-].CC[NH+](CC)C1=CC=C(N)C(C)=C1 MPLZNPZPPXERDA-UHFFFAOYSA-N 0.000 description 1
- SWLVFNYSXGMGBS-UHFFFAOYSA-N ammonium bromide Chemical compound [NH4+].[Br-] SWLVFNYSXGMGBS-UHFFFAOYSA-N 0.000 description 1
- XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- NXPHCVPFHOVZBC-UHFFFAOYSA-N hydroxylamine;sulfuric acid Chemical compound ON.OS(O)(=O)=O NXPHCVPFHOVZBC-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- AJDUTMFFZHIJEM-UHFFFAOYSA-N n-(9,10-dioxoanthracen-1-yl)-4-[4-[[4-[4-[(9,10-dioxoanthracen-1-yl)carbamoyl]phenyl]phenyl]diazenyl]phenyl]benzamide Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC(=O)C(C=C1)=CC=C1C(C=C1)=CC=C1N=NC(C=C1)=CC=C1C(C=C1)=CC=C1C(=O)NC1=CC=CC2=C1C(=O)C1=CC=CC=C1C2=O AJDUTMFFZHIJEM-UHFFFAOYSA-N 0.000 description 1
- JJKACVAOVDKGLK-UHFFFAOYSA-N n-[3-(diethylamino)-2-ethylphenyl]methanesulfonamide;hydrochloride Chemical compound Cl.CCN(CC)C1=CC=CC(NS(C)(=O)=O)=C1CC JJKACVAOVDKGLK-UHFFFAOYSA-N 0.000 description 1
- QVJDYYAGYLLMMU-UHFFFAOYSA-N n-ethylaniline;sulfuric acid;hydrate Chemical compound O.OS(O)(=O)=O.CCNC1=CC=CC=C1 QVJDYYAGYLLMMU-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- RWPGFSMJFRPDDP-UHFFFAOYSA-L potassium metabisulfite Chemical compound [K+].[K+].[O-]S(=O)S([O-])(=O)=O RWPGFSMJFRPDDP-UHFFFAOYSA-L 0.000 description 1
- 239000004297 potassium metabisulphite Substances 0.000 description 1
- 235000010263 potassium metabisulphite Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- MKWYFZFMAMBPQK-UHFFFAOYSA-J sodium feredetate Chemical compound [Na+].[Fe+3].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O MKWYFZFMAMBPQK-UHFFFAOYSA-J 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000001043 yellow dye Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/3029—Materials characterised by a specific arrangement of layers, e.g. unit layers, or layers having a specific function
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/3022—Materials with specific emulsion characteristics, e.g. thickness of the layers, silver content, shape of AgX grains
- G03C2007/3025—Silver content
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C2200/00—Details
- G03C2200/38—Lippmann (fine grain) emulsion
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C2200/00—Details
- G03C2200/53—Red-sensitive layer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/3022—Materials with specific emulsion characteristics, e.g. thickness of the layers, silver content, shape of AgX grains
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/305—Substances liberating photographically active agents, e.g. development-inhibiting releasing couplers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/392—Additives
- G03C7/39208—Organic compounds
- G03C7/39212—Carbocyclic
- G03C7/39216—Carbocyclic with OH groups
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
A photographic photosensitive multicolour negative film element comprising a film support coated with an antihalation layer upon which is coated red-, green- and blue-sensitive emulsion layers and which film further contains at least one developer inhibitor-releasing compound wherein the red-sensitive emulsion layer contains less than 2.5 g/m<2> silver, the total silver coating weight is less than 8 g/m<2> (as silver) and wherein the antihalation layer contains a material that will trap developer inhibitor fragments e.g. a hydroquinones, Lippmann emulsions or Carey Lea silver.
Description
PHOTOGRAPHIC COLOUR ELEMENT
This invention relates to photographic colour elements and, in particular, to colour elements having improved granularity.
There is a constant need, especially in the field of colour negative films, to improve performance.
Colour negative films typically comprise a support bearing (starting from the outermost layer) a yellow dye image-forming unit comprised of at least one bluesensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, a blue light-absorbing layer, at least one magenta dye imageforming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, at least one cyan dye image-forming unit comprising at least one redsensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler and an antihalation layer.
One way of improving sharpness is to reduce the amount of silver in the red-sensitive image-forming unit.
This will reduce the thickness of the red-sensitive emulsion layers. However, it is not possible to do this without paying a penalty in some other sensitometric property, in particular, it leads to an increased gamma normalised granularity position.
The present invention provides a colour negative film having improved sharpness due to a lower silver laydown in the red-sensitive emulsion layer unit but without any loss in gamma normalised granularity.
According to the present invention there is provided a photographic photosensitive multicolour negative film element comprising a film support coated with an antihalation layer upon which is coated red-, green- and blue-sensitive emulsion layer units and which film further contains at least one developer inhibitorreleasing compound wherein the red-sensitive emulsion layer unit contains less than 2.5 g/m2 silver, the total silver coating weight is less than 8 g/m2 (as silver) and wherein the antihalation layer contains a material that will trap developer inhibitor fragments.
The advantage of the present invention is that lower silver laydown levels can be achieved without any change in the gamma normalised granularity position.
The red-sensitive emulsion layer unit preferably contains up to 2 g/m2 silver, particularly from 0.5 to 2 g/m2 silver.
The preferred total silver coating weight is from 3 to 7 g/m2 and particularly from 6 to 6.5 g/m2.
The antihalation layer traditionally comprises grey metallic silver but it may also comprise a dye or mixture of dyes. The material that will trap developer inhibitor fragments may, for example, be Carey Lea silver (yellow colloidal silver), oxidised developer scavengers, for example hydroquinones or Lippmann emulsions (very fine grain silver halide emulsions). The amount of such developer inhibitor fragment-trapping material may be from 10 to 750 preferably from 20 to 500 and especially from 50 to 300 mg/m2.
It is believed that only a small fraction of the total concentration of inhibitor fragments are trapped by the method of the present invention. The remaining fragments can therefore still diffuse into the upper layers and fulfil the necessary interimage requirements.
In the accompanying drawings Fig 1 and Fig 2 represent the results of Example 1 being plots of red gamma normalised granularity and red MTF respectively.
Typically, the present emulsion layer units of the present multicolour materials also contain dye imageforming couplers associated with the silver halide emulsions. As used herein, the term "associated with" signifies that the coupler is incorporated in the silver halide emulsion layer or in a layer adjacent thereto where, during processing, it is capable of reacting with silver halide development products.
Multicolour elements contain dye image-forming units sensitive to each of the three primary regions of the spectrum. Each unit can be comprised of a single emulsion layer or of multiple emulsion layers sensitive to a given region of the spectrum. The layers of the element, including the layers of the image-forming units, can be arranged in various orders as known in the art.
A typical multicolour photographic element comprises a support bearing yellow, magenta and cyan dye imageforming units comprising at least one blue-, green- or red-sensitive silver halide emulsion layer having associated therewith at least one yellow, magenta or cyan dye-forming coupler respectively. The element can contain additional layers, such as filter and barrier layers.
In the following discussion of suitable materials for use in the elements of this invention, reference will be made to Research Disclosure Item 308119, December 1989 published by Kenneth Mason Publications, Emsworth, Hants,
United Kingdom. This publication will be identified hereafter as "Research Disclosure".
The silver halide emulsion employed in the elements of this invention can be either negativeworking or positive-working. Suitable emulsions and their preparation are described in Research Disclosure
Sections I and II and the publications cited therein.
Suitable vehicles for the emulsion layers and other layers of elements of this invention are described in
Research Disclosure Section IX and the publications cited therein.
The elements of the invention can include additional couplers as described in Research Disclosure Section VII, paragraphs F G and H and the publications cited therein.
The couplers of this invention and any additional couplers can be incorporated in the elements and emulsions as described in Research Disclosures of
Section VII, paragraph C and the publications cited therein.
The photographic elements of this invention or individual layers thereof, can contain brighteners (see
Research Disclosure Section V), antifoggants and stabilisers (see Research Disclosure Section VI), antistain agents and image dye stabiliser (see Research
Disclosure Section VII, paragraphs I and J), light absorbing and scattering materials (see Research
Disclosure Section VIII), hardeners (see Research
Disclosure Section X), plasticisers and lubricants (see
Research Disclosure Section XII), antistatic agents (see
Research Disclosure Section XIII), matting agents (see
Research Disclosure Section XVI) and development modifiers (see Research Disclosure Section XXI).
The photographic elements can be coated on a variety of supports as described in Research Disclosure
Section XVII and the references described therein.
Photographic elements can be exposed to actinic radiation, typically in the visible region of the spectrum, to form a latent image as described in Research
Disclosure Section XVIII and then processed to form a visible dye image as described in Research Disclosure
Section XIX. Processing to form a visible dye image includes the step of contacting the element with a colour developing agent to reduce developable silver halide and oxidise the colour developing agent. Oxidised colour developing agent in turn reacts with the coupler to yield a dye.
Preferred colour developing agents are pphenylene diamines. Especially preferred are 4-amino-3methyl-N,N-diethylaniline hydrochloride, 4-amino-3 methyl-N-ethyl-N-b-(methanesulphonamido) ethylaniline sulphate hydrate, 4-amino-3-methyl-N- ethyl-N-bhydroxyethylaniline sulphate, 4-amino-3-b (methanesulphonamido) ethyl-N, N-diethylaniline hydrochloride and 4-amino-N-ethyl-N-(2-methoxy- ethyl)m-toluidine di-p-toluene sulphonate.
With negative-working silver halide emulsions this processing step leads to a negative image. To obtain a positive (or reversal) image, this step can be preceded by development with a non-chromogenic developing agent to develop exposed silver halide, but not form dye, and then uniform fogging of the element to render unexposed silver halide developable. Alternatively, a direct positive emulsion can be employed to obtain a positive image.
Development is followed by the conventional steps of bleaching, fixing, or bleach-fixing, to remove silver and silver halide, washing and drying.
The following Example is included for a better understanding of the invention.
EXAMPLE 1
A photographic material of the following structure was prepared. The figures represent laydown in g/m2, emulsion laydowns being the amount of silver coated.
Overcoat layer
Gelatin 1.20
Matt Beads 0.01
Blue-sensitive emulsion layer unit
Gelatin 1.9
Blend of three blue-sensitised emulsions (Ag) 0.84
Coupler 1 1.00
Coupler 2 0.09
Bis vinylsulphonylmethyl ether (hardener) 0.25
Yellow filter layer
Gelatin 1.0
Yellow Lippmann emulsion 0.06
Green sensitised emulsion layer unit
Gelatin 3.0
Blend of three green-sensitised emulsions (Ag) 1.50
Coupler 3 0.95
Coupler 4 0.33
Interlayer
Gelatin 1.00
Red sensitised emulsion layer unit
Gelatin 3.10
Blend of three red-sensitised emulsions 2.00 (Ag)
Coupler 5 0.10
Coupler 6 0.02
Coupler 7 1.00
Antihalation layer
Gelatin 2.4
Yellow Lippmann emulsion (Ag) 0.30 ////// SUPPORT //////
The couplers used are as follows:
Coupler 1
Coupler 2
Coupler 3
Coupler 4
Coupler 5
Coupler 6
Coupler 7
A control photographic material was also coated which contained 0.3 g/m2 grey silver instead of the
Lippman emulsion in the antihalation layer.
The material was exposed to a test step wedge and processed by the following process at 38 "C: 1. Colour developer 3.25 mins
2. Bleach 4.33 mins
3. Wash 1.08 mins
4. Fix 4.33 mins
5. Stabilise 1.08 mins
Colour developer
Sodium hexametaphosphate 2.0 g
Sodium sulphite (anhy) 4.25 g
Potassium bromide 1.5 g
Hydroxylamine sulphate 2.0 g 4-(N-ethyl-N-2-hydroxyethyl)-2methylphenylenediamine 4.75 g
Water to 1.0 litre pH = 10.1
Bleach
Sodium iron(III) ethylenediaminetetra-acetic acid 100.0 g
Ammonium bromide 150.0 g
Acetic acid 6.0 ml
Water to 1.0 litre
Fixer
Ammonium thiosulphate 120.0 g
Sodium sulphite (anhy) 20.0 g
Potassium metabisulphite 20.0 g
Water to 1.0 litre
Stabiliser
Formaldehyde (36% soln) 6.0 ml
Water to 1.0 litre.
The results are shown in figs 1 and 2 of the accompanying drawings. The sharpness and granularity figures are for a 35mm film system.
Fig 1 shows D/logE and red gamma normalised granularity curves (white light exposure) relative to the control coating while Fig 2 shows the red MTF curve (white light exposure) relative to the control coating. The loss of 2.4 AMT (acutance) is compensated for by the gain of 4 grain units. This loss in sharpness is significant but less than the gain in sharpness caused by silver laydown reduction in the upper layers.
Claims (7)
1. A photographic photosensitive multicolour negative film element comprising a film support coated with an antihalation layer upon which is coated red-, green- and blue-sensitive emulsion layer units and which film further contains at least one developer inhibitorreleasing compound wherein the red-sensitive emulsion layer unit contains less than 2.5 g/m2 silver, the total silver coating weight is less than 8 g/m2 (as silver) and wherein the antihalation layer contains a material that will trap developer inhibitor fragments.
2. A photographic negative film as claimed in claim 1 in which the red-sensitive emulsion layer unit contains up to 2 g silver/m2
3. A photographic negative film as claimed in claim 1 or 2 in which the total silver coating weight is from 3 to 7 g/m2 (as silver).
4 A photographic negative film as claimed in any of claims 1-3 in which the material that will trap developer inhibitor fragments is a hydroquinone or a
Lippmann emulsion.
5. A photographic negative film as claimed in any of claims 1-4 in which the material that will trap developer inhibitor fragments is present in am amount of from 10 to 750 mg/m2.
6. A photographic negative film as claimed in any of claims 1-5 in which the material that will trap developer inhibitor fragments is present in am amount of from 20 to 500 mg/m2.
7. A photographic negative film as claimed in any of claims 1-6 in which the material that will trap developer inhibitor fragments is present in am amount of from 50 to 300 mg/m2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9315372A GB2280276B (en) | 1993-07-24 | 1993-07-24 | Photographic colour element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9315372A GB2280276B (en) | 1993-07-24 | 1993-07-24 | Photographic colour element |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9315372D0 GB9315372D0 (en) | 1993-09-08 |
| GB2280276A true GB2280276A (en) | 1995-01-25 |
| GB2280276B GB2280276B (en) | 1997-01-22 |
Family
ID=10739384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9315372A Expired - Fee Related GB2280276B (en) | 1993-07-24 | 1993-07-24 | Photographic colour element |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2280276B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043013A (en) * | 1998-01-29 | 2000-03-28 | Eastman Kodak Company | Color photographic element containing elemental silver and heterocyclic thiol in a non-light sensitive layer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2081920A (en) * | 1980-08-12 | 1982-02-24 | Kodak Ltd | Photographic colour reversal process |
| EP0468780A1 (en) * | 1990-07-26 | 1992-01-29 | Konica Corporation | Method of forming a color photographic image |
| US5091293A (en) * | 1986-08-29 | 1992-02-25 | Fuji Photo Film Co., Ltd. | Color negative photographic material |
| EP0572985A1 (en) * | 1992-06-01 | 1993-12-08 | Eastman Kodak Company | Method of processing a photographic element with a peracid bleach |
-
1993
- 1993-07-24 GB GB9315372A patent/GB2280276B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2081920A (en) * | 1980-08-12 | 1982-02-24 | Kodak Ltd | Photographic colour reversal process |
| US5091293A (en) * | 1986-08-29 | 1992-02-25 | Fuji Photo Film Co., Ltd. | Color negative photographic material |
| EP0468780A1 (en) * | 1990-07-26 | 1992-01-29 | Konica Corporation | Method of forming a color photographic image |
| EP0572985A1 (en) * | 1992-06-01 | 1993-12-08 | Eastman Kodak Company | Method of processing a photographic element with a peracid bleach |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043013A (en) * | 1998-01-29 | 2000-03-28 | Eastman Kodak Company | Color photographic element containing elemental silver and heterocyclic thiol in a non-light sensitive layer |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2280276B (en) | 1997-01-22 |
| GB9315372D0 (en) | 1993-09-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20040724 |