WO1993001524A1 - Method for forming a photographic colour image - Google Patents
Method for forming a photographic colour image Download PDFInfo
- Publication number
- WO1993001524A1 WO1993001524A1 PCT/EP1992/001526 EP9201526W WO9301524A1 WO 1993001524 A1 WO1993001524 A1 WO 1993001524A1 EP 9201526 W EP9201526 W EP 9201526W WO 9301524 A1 WO9301524 A1 WO 9301524A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- developer
- colour
- amplifier
- developing agent
- devamp
- Prior art date
Links
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
- G03C7/3017—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials with intensification of the image by oxido-reduction
-
- 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
- G03C7/44—Regeneration; Replenishers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/137—Cobalt complex containing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/144—Hydrogen peroxide treatment
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
A method of forming a photographic colour image comprising processing an imagewise exposed photographic silver halide colour material in a first processing bath containing a colour developing agent (developer), a second processing bath containing an amplifying oxidant and an optional colour developer developing agent (developer/amplifier), and optionally further processing baths, said baths being replenished characterised in that the overflow from the developer bath is fed to the developer/amplifier bath.
Description
METHOD FOR FORMING A PHOTOGRAPHIC COLOUR IMAGE
This invention relates to a method of forming a photographic colour image and specifically to such a method employing image amplification techniques. Redox amplification processes have been described, for example in British Specification Nos. 1,268,126, 1,399,481, 1,403,418 and 1,560,572. In such processes colour materials are developed to produce a silver image (which may contain only small amounts of silver) and then treated with a redox amplifying solution (or a combined developer- amplifier) to form a dye image. The developer- amplifier solution contains a reducing agent, for example a colour developing agent, and an oxidising agent which will oxidise the colour developing agent in the presence of the silver image which acts as a catalyst. The photographic material used in such a process may be a conventional coupler-containing silver halide material or an image transfer material containing redox dye releasers. Oxidised colour developer reacts with a colour coupler (usually contained in the photographic material photographic material) to form image dye. The amount of dye formed depends on the time of treatment or the availability of colour coupler rather than the amount of silver in the image as is the case in conventional colour development processes. Examples of suitable oxidising agents include peroxy compounds including hydrogen peroxide and compounds which provide hydrogen peroxide, eg addition compounds of hydrogen peroxide; cobalt (III) complexes including cobalt hexammine complexes; and periodates. Mixtures of such compounds can also be used. A particular application of this technology is in the processing of silver chloride
colour paper, especially such paper with low silver levels.
In order to avoid having to use a solution which contains both colour developing agent and an oxidant (which solution is inherently unstable) , it is well known that, in addition to treating the photographic material with a single developer/amplifier it is possible first to develop the silver image and later, in a separate bath, to treat with an amplifying bath to form the dye image using the previously formed silver image as a catalyst. The amount of dye in such a system is limited by the amount of colour developing agent carried over into the second bath from the first. In order to provide sufficient colour developer it would be necessary to have a level of colour developing agent in the developer bath which would be too high for continuous running.
One way of operating such a known amplification process has been proposed in Japanese Kokai 61/088259 in which, before the developer/amplification step the photogaphic material is treated in a "pre-processing liquid" which contains colour developing agent but not oxidant. In the commercial world, however, thought needs to be given to keeping the processing running in stable condition over long periods of time.
The present invention provides a process which can be operated under commercial conditions of use in, say, a minilab showing considerable advantages in a number of areas. According to the present invention there is provided a method of forming a photographic colour image comprising processing an imagewise exposed photographic silver halide colour material in a first processing bath containing a colour developing agent (developer) , a second processing bath containing an
amplifying oxidant and an optional colour developer developing agent (developer/amplifier) , and optionally further processing baths, said baths being replenished characterised in that the overflow from the developer bath is fed to the developer/amplifier bath.
A number of advantages accrue from the present invention:
1. The developer/amplifier can be more dilute than a single developer/amplifier could be because about 20% of the image has already been formed. This also means that the developer/amplifier solution is more stable thus leading to less time-dependant replenishment when the processing system is idle. 2. Graininess observed in strictly develop and amplify systems (no developing agent added to the amplifier bath composition) as compared to combined developer/amplifier systems, is avoided. 3. The effects of halide ion build-up in the developer/amplifier bath which are noticeable in small volume tanks are reduced because most of the halide is produced in the first developer bath.
A . Allows the attainment of superior sensitometric results compared to a single developer/amplifier in the same processing time.
5. Allows better solution stability than a single developer/amplifier.
6. Generates less colour developing agent effluent than a single developer/amplifier.
Even if the developer/amplifier contains no colour developing agent initially, it soon will by virtue of carry-over from the first developer bath. It is usual in such circumstances to start the
developer/amplifier with colour developing agent at the "seasoned solution" concentration thus keeping its concentration steady at all stages of the processing. In the present developer baths the developing agent is preferably 4-N-ethyl-N-(β-methane- sulphonamidoethyl)-.Q-toluidine sesquisulphate (CD3) . The colour developing agent is preferably present in the developer solution in the range 0.1 to 20 g/1, preferably 1 to 10 g/1, particularly 4 to 6 g/1. Its concentration in the developer/amplifier bath is preferably in the range 0.1 to 20 g/1, preferably 0.5 to 5 g/1, particularly 1 to 3 g/1.
The concentration of oxidant, eg hydrogen peroxide, in the developer/amplifier bath is preferably in the range 0.1 to 60 g/1, preferably 0.3 • to 9 g/1, particularly 0.9 to 4.5 g/1.
The replenishment rate for colour developing agent in the colour developer solution is preferably in the range 30 to 1500 ml/m2, preferably 50 to 500 ml/m2, particularly 50 to 200 ml/m2 of photographic material processed. This will, in turn, produce carry-over and overflow rates of the same amount when loss by evaporation has been taken into account.
The replenishment rate for the oxidant (3% H202) in the developer/amplifier solution is preferably in the range 1 to 500 ml/m2, preferably 5 to 100 ml/m2, particularly 5 to 20 ml/m2 of photographic material processed.
The processing solutions may also contain other constituents including bases, antioxidants and chelating agents, for example those mention in Research Disclosure Item 308119, December 1989 published by Kenneth Mason Publications, Emsworth, Hants, United Kingdom.
The colour photographic material to be processed may be of any type but will preferably contain low amounts of silver halide. Preferred silver halide coverages are in the range 1 to 250, preferably 50 to 2 150 mg/m (as silver) . The material may comprise the emulsions, sensitisers, couplers, supports, layers, additives, etc. described in Research Disclosure,
December 1978, Item 17643, published by Kenneth Mason
Publications Ltd, Dudley Annex, 12a North Street, Emsworth, Hants P010 7DQ, U.K.
In a preferred embodiment the photographic material comprises a resin-coated paper support and the emulsion layers comprise more than 80%, preferably more than 90% silver chloride and are more preferably composed of substantially pure silver chloride. Preferably the amplification solution contains hydrogen peroxide and a colour developing agent.
The photographic materials can be single colour materials or multicolour materials. Multicolour materials 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 materials, including the layers of the image-forming units, can be arranged in various orders as known in the art.
A typical multicolour photographic material comprises a support bearing a yellow dye image-forming unit comprised of at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, and magenta and cyan dye image-forming units comprising at least one green- or red-sensitive silver halide emulsion layer having associated therewith at least one magenta or
cyan dye-forming coupler respectively. The material can contain additional layers, such as filter layers. The following Examples are included for a better understanding of the invention. The abbreviations DEV and DEVAMP are sometimes used to mean developer and developer/amplifier respectively..
EXAMPLE 1
The following simulated seasoned process solutions gives sensitometry close to the current standard 2001/RA-4 as shown in Table 1.
Table 1 Simulated seasoned process (1)
Component Developer Dilute Devamp
(A) is a 60% solution in water of 1-hydroxy- ethylidene-1, 1-diphosphonic acid;
(B) is a 40% solution of the penta sodium salt of diethylene triamine penta acetic acid and
(C) is an 85% solution in water of diethyl hydroxylamine.
This system is set up using the overflow and carry-over from the first developer to make the dilute Developer/Amplifier. The first developer is replenished at about 118 ml/m2 and if evaporation is neglected this volume passes into the developer/amplifier. In addition peroxide is added to the developer/amplifier at 10.8 ml/m2. The calculated seasoned level at equilibrium gives the developer/amplifier composition shown in Table 1.
This formula gives sensitometry equivalent to RA- 4/2001 using a colour paper comprising substantially pure silver chloride emulsions and a total silver coating weight of 144 mg/m2, less CD3 effluent than a single developer/amplifier or RA-4/2001 process as shown by the numbers in Table 2.
These numbers are approximate and represent only the simple outflow during running without any allowance for tank dumps. The numbers will also vary depending on the exact details of the system run but they illustrate the advantage of the DEV-DEVAMP system.
The DEVAMP formula used for the example in Table 2 is shown in Table 3 below.
Table 3 Single DEVAMP formula
Component DEVAMP
This process is replenished at 161 ml/m anci <32-ves sensitometry equivalent to RA-4/2001.
In the single DEVAMP system it is possible to lower the concentration of CD3 and lower the replenishment rate and extend the development time to the total time in the DEV-DEVAMP system. A system like this would have the DEVAMP of the composition in Table 1 above. A comparison of the basic sensitometry and stability of the combined DEV-DEVAMP system with the same DEVAMP used by itself is in example 2.
EXAMPLE 2
In this example the sensitometry and stability of the DEV-DEVAMP system is compared with that of the DEVAMP by itself for the same total time, 60 seconds. In this test sensitometric strips were processed every hour in both the combined and the single system using the same DEVAMP solution in both cases. No replenishment was carried out. The neutral Dmax values for the DEV-DEVAMP system are shown as a function of solution age in Table 4.
Table 4 System stability DEV-DEVAMP vs DEVAMP
Neutral Dmax values
This test shows that for the same total development time the initial sensitometry of the DEV- DEVAMP system is superior to the DEVAMP used by itself, this can be seen in the blue record. In addition the DEV-DEVAMP system maintains its activity better than the single DEVAMP as the solutions age. This means that the DEV-DEVAMP system is better in at least three ways: 1. It has better initial sensitometry.
2. It is more stable.
3. It is a viable system which produces low levels of CD3 in the effluent.
It is possible to produce even lower CD3 effluent. Table 5 shows this relation for compositions designed to give acceptable sensitometry similar to that in Table 1 of Example 1 for the same total development time. It is noted, however, that if processing times are lengthened there a lot more possible combinations available.
Table 5 DEV-DEVAMP composition and CD3 discharge
CD3 g/1 Replenishment rate ml/m2 CD3 out mg/m2
H2O2REP
11 84
11 115
Although the data in Table 4 suggest that the best system to use would be that with the most CD3 in the developer, i.e., the 8g/l case or even higher, some other factors need to be considered. It becomes more difficult to replenish the developer the more concentrated it is and kit concentrates might need to be used. Secondly, from work on the original version of split development high CD3 levels in the first developer can generate increased grain and colour contamination due to the high amplification rate in the first 10 seconds after entering the DEVAMP. This can be moderated to some extent by adjusting the chloride level but 8 g/1 CD3 is probably the upper limit.
As the level of CD3 in the developer is increased a lower level of CD3 in the DEVAMP can be used to give acceptable sensitometry. This means that the volume of developer replenisher can be lowered (and made more concentrated) resulting in lower overflow from the DEVAMP. In Example 2 the case with CD3 5 g/1 DEV and 2.0 g/1 DEVAMP was examined. In Example 3 the case with CD3 7 g/1 DEV and 1.5 g/1 DEVAMP with process times a. 20 sec DEV, 40 sec DEVAMP is compared with the DEVAMP by itself for b. 60 sec.
EXAMPLE 3
Strips were processed every hour as in Example 2 using the same DEVAMP solution for both processes; no replenishment was carried out .
Table 6 Simulated seasoned process
Component DEVELOPER DILUTE DEVAMP
The results of this comparison are shown in table 7
Table 7 System stability DEV-DEVAMP vs DEVAMP
Neutral Dmax values
It can be seen from this table that the DEV- DEVAMP system has better initial sensitometry and that it is more stable on standing than the DEVAMP by itself for the same total time. In this example the difference between the two systems is more pronounced than that in Example 2. This shows that as the CD3 level in the DEVAMP is decreased the DEV-DEVAMP system is increasingly superior to the single DEVAMP system.
Claims
1. A method of forming a photographic colour image comprising processing an imagewise exposed photographic silver halide colour material in a first processing bath containing a colour developing agent (developer) , a second processing bath containing an amplifying oxidant and an optional colour developer developing agent (developer/amplifier) , and optionally further processing baths, said baths being replenished characterised in that the overflow from the developer bath is fed to the developer/amplifier bath.
2. A method as claimed in claim 1 in which the amplifying oxidant is hydrogen peroxide or a compound that provides hydrogen peroxide.
3. A method as claimed in claims 1 or 2 in which the colour developing agent is 4-N-ethyl-N- (β- methanesulphonamidoethyl)-.Q-toluidine sesquisulphate.
4. A method as claimed in any of claims 1 to 3 in which the developer solution contains colour developing agent in an amount of from 0.1 to 20, preferably from 1 to 10, g/1.
5. A method as claimed in any of claims 1 to 3 in which the developer solution contains colour developing agent in an amount of from 4 to 6 g/1.
6. A method as claimed in any of claims 1 to 5 in which the developer/amplifier solution contains colour developing agent in an amount of from 0.1 to 20, preferably from 0.5 to 5, g/1.
7. A method as claimed in any of claims 1 to 5 in which the developer/amplifier solution contains colour developing agent in an amount of from 1 to 3 g/1.
8. A method as claimed in any of claims 1 to 7 in which the developer/amplifier solution contains hydrogen peroxide in an amount of from 0.1 to 60, preferably from 0.3 to 9, g/1. 9. A method as claimed in any of claims 1 to 7 in which the developer/amplifier solution contains hydrogen peroxide in an amount of from 0.
9 to 4.5 g/1
10. A method as claimed in any of claims 1 to 9 in which the colour developer solution is replenished at a rate of 30 to 1500, preferably 50 to 500, ml/m2.
11. A method as claimed in any of claims 1 to 9 in which the colour developer solution is replenished at a rate of 50 to 200 ml/m2.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/988,933 US5324624A (en) | 1991-07-11 | 1992-07-07 | Redox amplification method of forming a photographic color image |
EP92914130A EP0555423B1 (en) | 1991-07-11 | 1992-07-07 | Method for forming a photographic colour image |
DE69227301T DE69227301T2 (en) | 1991-07-11 | 1992-07-07 | METHOD FOR PRODUCING A PHOTOGRAPHIC COLOR IMAGE |
JP50196593A JP3162714B2 (en) | 1991-07-11 | 1992-07-07 | Photographic color image forming method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9114933.6 | 1991-07-11 | ||
GB919114933A GB9114933D0 (en) | 1991-07-11 | 1991-07-11 | Method for forming a photographic colour image |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993001524A1 true WO1993001524A1 (en) | 1993-01-21 |
Family
ID=10698159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1992/001526 WO1993001524A1 (en) | 1991-07-11 | 1992-07-07 | Method for forming a photographic colour image |
Country Status (6)
Country | Link |
---|---|
US (1) | US5324624A (en) |
EP (1) | EP0555423B1 (en) |
JP (1) | JP3162714B2 (en) |
DE (1) | DE69227301T2 (en) |
GB (1) | GB9114933D0 (en) |
WO (1) | WO1993001524A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0620487A2 (en) * | 1993-04-13 | 1994-10-19 | Kodak Limited | Photographic processes |
US5358830A (en) * | 1992-12-04 | 1994-10-25 | Eastman Kodak Company | Method of photographic processing |
GB2303930A (en) * | 1995-07-28 | 1997-03-05 | Kodak Ltd | Forming a photographic colour image |
US5702873A (en) * | 1991-12-03 | 1997-12-30 | Eastman Kodak Company | Redox amplification solutions containing metal ion sequestering agents |
WO2005066713A1 (en) * | 2003-12-31 | 2005-07-21 | Eastman Kodak Company | Method for processing motion picture print film |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5763147A (en) * | 1995-02-21 | 1998-06-09 | Eastman Kodak Company | Method for processing high silver bromide color negative photographic films using a peroxide bleaching composition |
US5773202A (en) * | 1995-02-21 | 1998-06-30 | Haye; Shirleyanne Elizabeth | Method for processing color photographic films using a peroxide bleaching composition |
US5614355A (en) * | 1995-02-21 | 1997-03-25 | Eastman Kodak Company | Peroxide composition and method for processing color photographic elements containing predominantly chloride silver halide emulsions |
US5695913A (en) * | 1995-02-28 | 1997-12-09 | Fuji Photo Film Co., Ltd. | Process for the formation of color image |
GB2302596B (en) * | 1995-06-22 | 1999-02-03 | Kodak Ltd | Method of photographic processing with solution replenishment |
US5925504A (en) * | 1995-07-28 | 1999-07-20 | Eastman Kodak Company | Method of forming a photographic color image |
GB2303932B (en) * | 1995-07-28 | 1999-04-07 | Kodak Ltd | Method of forming a photographic colour image |
GB2305738B (en) * | 1995-09-29 | 1999-05-12 | Kodak Ltd | Method of processing a photographic silver halide colour material |
GB2309092B (en) * | 1996-01-10 | 1999-11-10 | Kodak Ltd | Photographic dye image-forming process |
GB2309100B (en) * | 1996-01-10 | 1999-11-10 | Kodak Ltd | Photographic image-forming process |
GB9623564D0 (en) * | 1996-11-13 | 1997-01-08 | Kodak Ltd | Photographic developer/amplifier process and solutions |
US20050147933A1 (en) * | 2003-12-31 | 2005-07-07 | Eastman Kodak Company | Color motion picture print film |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992007299A1 (en) * | 1990-10-19 | 1992-04-30 | Kodak Limited | Method of forming a photographic image |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3674490A (en) * | 1968-12-11 | 1972-07-04 | Agfa Gevaert Ag | Process for the production of photographic images |
BE790101A (en) * | 1971-10-14 | 1973-04-13 | Eastman Kodak Co | SILVER HALIDE PHOTOGRAPHIC PRODUCT AND PROCESS FOR FORMING AN IMAGE WITH THIS PRODUCT |
US3765891A (en) * | 1972-05-23 | 1973-10-16 | Eastman Kodak Co | Process for developing photographic elements |
US3841873A (en) * | 1973-05-21 | 1974-10-15 | Eastman Kodak Co | Cobalt (iii) complex amplifier baths in color photographic processes |
JPS5836332B2 (en) * | 1974-06-20 | 1983-08-09 | コニカ株式会社 | Processing method for silver halide photographic materials |
US4113490A (en) * | 1974-07-12 | 1978-09-12 | Konishiroku Photo Industry Co., Ltd. | Method for processing light-sensitive silver halide photographic materials |
CA1064311A (en) * | 1975-09-02 | 1979-10-16 | Vernon L. Bissonette | Redox amplification process employing cobalt iii complex and peroxide as oxidizing agents |
JPS604979B2 (en) * | 1975-10-07 | 1985-02-07 | コニカ株式会社 | How to enhance dye images |
JPS5251941A (en) * | 1975-10-24 | 1977-04-26 | Konishiroku Photo Ind Co Ltd | Processing of silver halide photographic light sensitive material |
GB2117914B (en) * | 1982-01-27 | 1985-07-10 | Fuji Photo Film Co Ltd | Color intensified image forming process |
JPS6188259A (en) * | 1984-10-05 | 1986-05-06 | Fuji Photo Film Co Ltd | Color image forming method |
GB8909580D0 (en) * | 1989-04-26 | 1989-06-14 | Kodak Ltd | Method of forming a photographic colour image |
-
1991
- 1991-07-11 GB GB919114933A patent/GB9114933D0/en active Pending
-
1992
- 1992-07-07 EP EP92914130A patent/EP0555423B1/en not_active Expired - Lifetime
- 1992-07-07 US US07/988,933 patent/US5324624A/en not_active Expired - Fee Related
- 1992-07-07 WO PCT/EP1992/001526 patent/WO1993001524A1/en active IP Right Grant
- 1992-07-07 DE DE69227301T patent/DE69227301T2/en not_active Expired - Fee Related
- 1992-07-07 JP JP50196593A patent/JP3162714B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992007299A1 (en) * | 1990-10-19 | 1992-04-30 | Kodak Limited | Method of forming a photographic image |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5702873A (en) * | 1991-12-03 | 1997-12-30 | Eastman Kodak Company | Redox amplification solutions containing metal ion sequestering agents |
US5358830A (en) * | 1992-12-04 | 1994-10-25 | Eastman Kodak Company | Method of photographic processing |
EP0620487A2 (en) * | 1993-04-13 | 1994-10-19 | Kodak Limited | Photographic processes |
EP0620487A3 (en) * | 1993-04-13 | 1995-08-02 | Kodak Ltd | Photographic processes. |
GB2303930A (en) * | 1995-07-28 | 1997-03-05 | Kodak Ltd | Forming a photographic colour image |
US5766831A (en) * | 1995-07-28 | 1998-06-16 | Eastman Kodak Company | Method of forming a photographic color image |
GB2303930B (en) * | 1995-07-28 | 1999-09-01 | Kodak Ltd | Method of forming a photographic colour image |
WO2005066713A1 (en) * | 2003-12-31 | 2005-07-21 | Eastman Kodak Company | Method for processing motion picture print film |
Also Published As
Publication number | Publication date |
---|---|
EP0555423A1 (en) | 1993-08-18 |
EP0555423B1 (en) | 1998-10-14 |
JP3162714B2 (en) | 2001-05-08 |
JPH06501116A (en) | 1994-01-27 |
GB9114933D0 (en) | 1991-08-28 |
US5324624A (en) | 1994-06-28 |
DE69227301T2 (en) | 1999-06-02 |
DE69227301D1 (en) | 1998-11-19 |
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