US3809563A - Method for processing light-sensitive silver halide color photographic materials - Google Patents
Method for processing light-sensitive silver halide color photographic materials Download PDFInfo
- Publication number
- US3809563A US3809563A US00232624A US23262472A US3809563A US 3809563 A US3809563 A US 3809563A US 00232624 A US00232624 A US 00232624A US 23262472 A US23262472 A US 23262472A US 3809563 A US3809563 A US 3809563A
- Authority
- US
- United States
- Prior art keywords
- bleach
- fixing
- compound
- bath
- silver halide
- 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.)
- Expired - Lifetime
Links
- 238000012545 processing Methods 0.000 title abstract description 16
- -1 silver halide Chemical class 0.000 title abstract description 16
- 239000000463 material Substances 0.000 title abstract description 14
- 229910052709 silver Inorganic materials 0.000 title abstract description 11
- 239000004332 silver Substances 0.000 title abstract description 11
- 238000000034 method Methods 0.000 title description 12
- 150000001875 compounds Chemical class 0.000 abstract description 17
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract description 11
- 150000003839 salts Chemical class 0.000 abstract description 10
- 229960001484 edetic acid Drugs 0.000 abstract description 5
- 238000004061 bleaching Methods 0.000 description 21
- 239000000243 solution Substances 0.000 description 17
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 4
- 229940125904 compound 1 Drugs 0.000 description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229940126214 compound 3 Drugs 0.000 description 3
- MQRJBSHKWOFOGF-UHFFFAOYSA-L disodium;carbonate;hydrate Chemical compound O.[Na+].[Na+].[O-]C([O-])=O MQRJBSHKWOFOGF-UHFFFAOYSA-L 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- 229940001482 sodium sulfite Drugs 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 2
- WFXLRLQSHRNHCE-UHFFFAOYSA-N 2-(4-amino-n-ethylanilino)ethanol Chemical compound OCCN(CC)C1=CC=C(N)C=C1 WFXLRLQSHRNHCE-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- ZNBNBTIDJSKEAM-UHFFFAOYSA-N 4-[7-hydroxy-2-[5-[5-[6-hydroxy-6-(hydroxymethyl)-3,5-dimethyloxan-2-yl]-3-methyloxolan-2-yl]-5-methyloxolan-2-yl]-2,8-dimethyl-1,10-dioxaspiro[4.5]decan-9-yl]-2-methyl-3-propanoyloxypentanoic acid Chemical compound C1C(O)C(C)C(C(C)C(OC(=O)CC)C(C)C(O)=O)OC11OC(C)(C2OC(C)(CC2)C2C(CC(O2)C2C(CC(C)C(O)(CO)O2)C)C)CC1 ZNBNBTIDJSKEAM-UHFFFAOYSA-N 0.000 description 1
- ZVNPWFOVUDMGRP-UHFFFAOYSA-N 4-methylaminophenol sulfate Chemical compound OS(O)(=O)=O.CNC1=CC=C(O)C=C1.CNC1=CC=C(O)C=C1 ZVNPWFOVUDMGRP-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 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
- 229940101006 anhydrous sodium sulfite Drugs 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 229940125898 compound 5 Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910000378 hydroxylammonium sulfate Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- ZNNZYHKDIALBAK-UHFFFAOYSA-M potassium thiocyanate Chemical compound [K+].[S-]C#N ZNNZYHKDIALBAK-UHFFFAOYSA-M 0.000 description 1
- 229940116357 potassium thiocyanate Drugs 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 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
- G03C7/42—Bleach-fixing or agents therefor ; Desilvering processes
- G03C7/421—Additives other than bleaching or fixing agents
Definitions
- This invention relates to a method for processing lightsensitive silver halide color photographic materials, particularly to a process for quick bleaching of developed silver image.
- the bleaching bath containing potassium ferricyanide is sufficient in bleaching power, but is undesirably strong in oxidizing power. Accordingly, thiosulfate which is a solvent for silver halide cannot be incorporated into the bath, and thus a fixing bath should necessarily be used separately to bring about a disadvantage particularly in the case of quick processing.
- the bleaching bath containing a water-soluble ferric salt of EDTA thiosulfate can be incorporated into the bath, and thus the bleaching and fixing of photographic material can be effected in one bath.
- the said bath has such drawback that is is weak in bleaching power and requires a long processing time, and the actual state is such that in case developed silver formed by use of such a black-and-white developer as used in the case of reversal color development, an ordinary EDTA ferric salt bleaching bath cannot be put into practical use because of its being insutficient in bleaching power.
- a compound of the general formula Br Br wherein R and R are individually a hydrogen atom, a lower alkyl group, an allyl group (C H or an amino group; and nis 0 or a positive integer of l to 5, displays a markedly excellent bleach-promoting eflect when incorporated into an EDTA ferric salt bleach-fixing solution.
- the compound of the Formula I forms no such color fog as in the case of thiourea, even when incorporated into a color developer and has a bleach-promoting action equivalent to or more than that of thiourea, even when used in a slight amount, thereby to make it possible to shorten the bleaching time to V; or more.
- a bath used prior to the bleach-fixing such as a stopping, stop-fixing or intermediate bath, the bleach-fixing is complete within an extremely short period of time.
- EXAMPLE 1 A color photographic paper was exposed, subjected to color development (20 C., 10 min.), stop-fixing (20 C., 3 min.) and water-washing (l822 C., 5 min.) and then treated with the following EDTA ferric salt bleachfixing solution (20 C.):
- Color developer G. Sodium sulfite 3 N-ethyl-N-hydroxyethyl-p-phenylenediamine 5 Potassium bromide 1.5 Hydroxylamine sulfate 2.5 Sodium carbonate (monohydrate) 50 Water to make 1.0 liter.
- Bleach-fixing solution G. EDTA ferric salt 50 Sodium carbonate (monohydrate) 3 Ammonium thiosulfate 240 Anhydrous sodium sulfite 10 Wate 2 m ke l-Q liten
- G. EDTA ferric salt 50 Sodium carbonate (monohydrate) 3
- Ammonium thiosulfate 240 Anhydrous sodium sulfite 10 Wate 2 m ke l-Q liten
- Example 2 was repeated, except that the second stopping was effected in the same bath as in the first stopping, and the film was washed with water and then treated at 20 C. for 2 minutes with a 0.1% aqueous solution of each of the Compounds 1 to 9, followed by bleach-fixing. In every case, the bleaching was complete within 5 minutes.
- EXAMPLE 4 A color photographic paper using a polyethylene laminate paper as the support was exposed and then subjected to the following processings:
- the photographic paper was insufiiciently bleached and was turbid in color, whereas in case the Compound 3 had been incorporated into the developer, the photographic paper was completely bleached and a color print could be obtained in such a short time as 5 minutes.
- a method for bleach-fixing an exposed, develop light-sensitive silver halide photographic material with a water-soluble ferric salt of ethylenediamine tetraacetic acid and a fixing agent comprising the bleach-fixing being carried out in the presence of a dithiourea compound by processing the photographic material with a bleach-fixing solution or with a bath used prior to the bleach-fixing, the solution or the bath containing therein the dithiourea compound in an amount of from 0.02 g. to 5 g. per liter of bath or solution, the dithiourea compound being represented by the general formula:
- n is 0 or a positive integer of 1 to 5.
- a solution for bleach-fixing an exposed, developed light-sensitive silver halide photographic material comprising water, a water-soluble ferric salt of ethylenediamine tetraacetic acid, a fixing agent and a dithiourea compound, the dithiourea Compound having been incors 5 6 porated in an amount of from 0.02 g. to 5 g.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
IN THE PROCESSING OF AN EXPOSED SILVER HALIDE COLOR PHOTOGRAPHIC MATERIAL WITH A BLEACH-FIXING SOLUTION CONTAINING A FERRIC SALT OF ETHYLENE DIAMINE TETRAACETIC ACID, QUICK BLEACH-FIXING CAN BE EFFECTED BY INCORPORATING THE BELOW-MENTIONED COMPOUND IN A BATH WHICH IS EMPLOYED PRIOR TO SAID BLEACH-FIXING SOLUTION OF A BLEACH-FIXING BATH.
NH2-C(=S)-NH-(CH2)N-NH-C(=S)-NH2
WHEREIN N IS 0 OR A POSITIVE INTEGER OF 1 TO 5.
NH2-C(=S)-NH-(CH2)N-NH-C(=S)-NH2
WHEREIN N IS 0 OR A POSITIVE INTEGER OF 1 TO 5.
Description
"United States Patent 015cc 3,809,563 Patented May 7, 1974 3,809,563 METHOD FOR PROCESSING LIGHT-SENSITIVE SILVER HALIDE COLOR PHOTOGRAPHIC MATERIALS Takao Nimura and Kunio Jin, Tokyo, and Hajime Komatsu, Odawara, Japan, assignors to Konishiroku Photo Industry Co., Ltd. No Drawing. Filed Mar. 7, 1972, Ser. No. 232,624 Claims priority, application Japan, Sept. 16, 1970,
45/80,51 Int. Cl. G03c 7/16, 5/32 U.S. CI. 9622 6 Claims ABSTRACT OF THE DISCLOSURE In the processing of an exposed silver halide color photographic material with a bleach-fixing solution containing a ferric salt of ethylene diamine tetraacetic acid, quick bleach-fixing can be effected by incorporating the below-mentioned compound in a bath which is employed prior to said bleach-fixing solution of a bleach-fixing bath.
H2N(3-NH( 0 H2) nNHi JNH2 Wherein n is 0 or a positive integer of l to 5. i
This invention relates to a method for processing lightsensitive silver halide color photographic materials, particularly to a process for quick bleaching of developed silver image.
Recently, the demand for quick processing of lightsensitive color photographic materials has come to be extremely strong. In order to satisfy the above demand, there are adopted such means as to unite or partly omit the steps for color development, stopping, fixing, hardening, cleaning, bleaching, stabilization and the like processing of color photographic materials, or to shorten the processing times in the individual steps. Among these steps for processing of color photographic materials, there is a step for bleaching metallic silver formed by the development of photographic materials. This bleaching is ordinarily etfected by use of a bleaching bath containing potassium ferricyanide or a water-soluble ferric salt of ethylenediamine tetraacetic acid (EDTA).
The bleaching bath containing potassium ferricyanide is sufficient in bleaching power, but is undesirably strong in oxidizing power. Accordingly, thiosulfate which is a solvent for silver halide cannot be incorporated into the bath, and thus a fixing bath should necessarily be used separately to bring about a disadvantage particularly in the case of quick processing.
In case the bleaching bath containing a water-soluble ferric salt of EDTA is used, thiosulfate can be incorporated into the bath, and thus the bleaching and fixing of photographic material can be effected in one bath. However, the said bath has such drawback that is is weak in bleaching power and requires a long processing time, and the actual state is such that in case developed silver formed by use of such a black-and-white developer as used in the case of reversal color development, an ordinary EDTA ferric salt bleaching bath cannot be put into practical use because of its being insutficient in bleaching power.
With an aim to increase the bleaching power, there have been proposed methods using the bleaching bath incorporated with thiourea or its derivative or with a S-membered heterocyclic compound having a mercapto group. However, the former method is disadvantageous in that when the bleaching solution, even in an extremely small amount, is incorporated into a color developer, color fog is formed all over the surface of light-sensitive color photographic material. On the other hand, the latter method is insufficient in efiectiveness and cannot accomplish the object of quick processing.-
Under such circumstances as mentioned above, we have now found that a compound of the general formula Br Br wherein R and R are individually a hydrogen atom, a lower alkyl group, an allyl group (C H or an amino group; and nis 0 or a positive integer of l to 5, displays a markedly excellent bleach-promoting eflect when incorporated into an EDTA ferric salt bleach-fixing solution. The compound of the Formula I forms no such color fog as in the case of thiourea, even when incorporated into a color developer and has a bleach-promoting action equivalent to or more than that of thiourea, even when used in a slight amount, thereby to make it possible to shorten the bleaching time to V; or more. Further, it has been recognized that even when the compound of the Formula -I is incorporated into a bath used prior to the bleach-fixing, such as a stopping, stop-fixing or intermediate bath, the bleach-fixing is complete within an extremely short period of time.
Examples of the compound of the Formula I which is used in the present invention are shown below, but compounds usable in the present invention are not limited to these.
Compound 1 HzN-G S NHNHC S-NH1 Compound 2 H502 /NC 8 NHNHC S-NHz H Compound 3 HaC 0H;
NC SNHNHC SN\ H H Compound 4 H5O:
/NC s NHNHC S-NH: H
Compound 5 H5O: (L5H;
/NC s NHNHC SN\ n H Compound 6 HzN NH; NC s NH(CH2)2NHC S-N Compound 7 HzN-C S NH(CH2)2NHO S -NH Compound 8 mN-o sivmcrmmno s-NH,
Compound 9 Hm-o s NH(CH2)NHC s-Nm The amounts of the above-mentioned compounds to be incorporated into bleaching solutions or into various processing liquids used prior to bleaching are preferably Within the range from 0.02 to 5 g./l. (or maximum soluble amounts thereof). These compounds may be used alone or in the form of a mixture of two or more, or may be used in combination with known bleach-promoting agents.
The present invention is illustrated in detail below with reference to examples.
EXAMPLE 1 A color photographic paper was exposed, subjected to color development (20 C., 10 min.), stop-fixing (20 C., 3 min.) and water-washing (l822 C., 5 min.) and then treated with the following EDTA ferric salt bleachfixing solution (20 C.):
Water to make 1.0 liter.
The times required for bleaching in the above case were as set forth in Table 1.
TABLE 1 Compound Thlo--- Additive Blank urea 1 1 4 9 Amount (g./1.) 1.0 0.02 1.0 0.5 0.5
Time required for bleaching (sec.) 110 60 80 40 45 30 From these results, it is understood that the compounds of the Formula I are more excellent in bleach-promoting action than thiourea.
'EXAMPLE 2 A reversal color film was subjected to the following processings:
(1) First development: 20-1:02 C. (10 min.) (2) First stopping: 20:!:l C. (3 min.)
(3) Water-washing: 20.-' -2 C. (10 min.)
(4) Color development: 20i0.5 C. (9 min.) (5) Second stopping: 20 :1 C. (3 min.)
(6) Water-washing: 20i2 C. min.)
(7) Bleach-fixing: 20 ;1 C. (5 min.)
(8) Water-washing: 20i2 C. min.)
(9) Drying.
First developer:
N-methyl-p-aminophenol sulfate g 2 Sodium sulfite g 50 Hydroquinone g 6 Sodium carbonate (monohydrate) .g 45 Potassium bromide g 1 Potassium iodide mg 10 Potassium thiocyanate g 1.5 Water to make 1.0 liter.
First stopping solution:
Glacial acetic acid ml 15 Sodium acetate g 10 Water to make 1.0 liter.
Color developer: G. Sodium sulfite 3 N-ethyl-N-hydroxyethyl-p-phenylenediamine 5 Potassium bromide 1.5 Hydroxylamine sulfate 2.5 Sodium carbonate (monohydrate) 50 Water to make 1.0 liter.
Second sopping solution:
Glacial acetic acid ml 15 Sodium acetate g 10 (Compound 1) g 1.5 Water to make 1.0 liter.
Bleach-fixing solution: G. EDTA ferric salt 50 Sodium carbonate (monohydrate) 3 Ammonium thiosulfate 240 Anhydrous sodium sulfite 10 Wate 2 m ke l-Q liten In case the Compound 1 had not been incorporated into the second stopping solution, the color film was not successfully bleached'even when the bleach-fixing time was prolonged to 20 minutes, whereas in case the Compound 1 had been incorporated into said solution, the film was sufliciently bleached in 5 minutes.
EXAMPLE 3 Example 2 was repeated, except that the second stopping was effected in the same bath as in the first stopping, and the film was washed with water and then treated at 20 C. for 2 minutes with a 0.1% aqueous solution of each of the Compounds 1 to 9, followed by bleach-fixing. In every case, the bleaching was complete within 5 minutes.
EXAMPLE 4 A color photographic paper using a polyethylene laminate paper as the support was exposed and then subjected to the following processings:
Color development: 35 C. (1 min., 30 sec.) Bleach-fixing: 35 C. (1 min., 30 sec.) Water-washing: 3035 C. (2 min.)
Water to make 1.0 liter.
Bleach-fixing solution:
Same as in Example 2.
In case the Compound 3 had not been incorporated into the developer used in the above, the photographic paper was insufiiciently bleached and was turbid in color, whereas in case the Compound 3 had been incorporated into the developer, the photographic paper was completely bleached and a color print could be obtained in such a short time as 5 minutes.
What we claim is:
1. In a method for bleach-fixing an exposed, develop light-sensitive silver halide photographic material with a water-soluble ferric salt of ethylenediamine tetraacetic acid and a fixing agent, the improvement comprising the bleach-fixing being carried out in the presence of a dithiourea compound by processing the photographic material with a bleach-fixing solution or with a bath used prior to the bleach-fixing, the solution or the bath containing therein the dithiourea compound in an amount of from 0.02 g. to 5 g. per liter of bath or solution, the dithiourea compound being represented by the general formula:
wherein n is 0 or a positive integer of 1 to 5.
2. A method according to claim 1 wherein n equals 0. 3. A method according to claim 1 wherein n equals 2. 4. A method according to claim 1 wherein n equals 4. 5. A method according to claim 1 wherein n equals 5., 6. A solution for bleach-fixing an exposed, developed light-sensitive silver halide photographic material comprising water, a water-soluble ferric salt of ethylenediamine tetraacetic acid, a fixing agent and a dithiourea compound, the dithiourea Compound having been incors 5 6 porated in an amount of from 0.02 g. to 5 g. per liter FOREIGN PATENTS of solution and being represented by the general formula: 336,257 3/1959 Switzerland 96 60 BF 5 s Q g RONALD H. SMITH, Primary Examiner wherein n is 0 or a positive integer of 1 to 5. 5 KELLEY, Assistant EXaminel' References Cited US. Cl. X.R.
UNITED STATES PATENTS 62 XR 3,189,462 6/1965 Bard et a1. 96-60 R 3,617,283 11/1971 Ohi et a1 96,-60 BF 3,706,561 12/1972 Mowrey 96-60 R
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP45080512A JPS4926586B1 (en) | 1970-09-16 | 1970-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3809563A true US3809563A (en) | 1974-05-07 |
Family
ID=13720353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00232624A Expired - Lifetime US3809563A (en) | 1970-09-16 | 1972-03-07 | Method for processing light-sensitive silver halide color photographic materials |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3809563A (en) |
| JP (1) | JPS4926586B1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040837A (en) * | 1974-12-05 | 1977-08-09 | Konishiroku Photo Industry Co., Ltd. | Photographic bleach-fixer |
| US4184875A (en) * | 1977-04-30 | 1980-01-22 | Agfa-Gevaert, A.G. | Photographic reversal process |
| US4268618A (en) * | 1979-07-05 | 1981-05-19 | Fuji Photo Film Co., Ltd. | Bleaching composition for photographic processing |
| US4282313A (en) * | 1977-12-29 | 1981-08-04 | Agfa-Gevaert Aktiengesellschaft | Photographic material with stabilizers |
| DE3310956A1 (en) * | 1982-03-25 | 1983-09-29 | Fuji Photo Film Co., Ltd., Minami Ashigara, Kanagawa | METHOD FOR TREATING A COLOR PHOTOGRAPHIC, LIGHT-SENSITIVE MATERIAL |
| US4717647A (en) * | 1984-09-21 | 1988-01-05 | Fuji Photo Film Co., Ltd. | Method for processing silver halide photographic elements in a bleaching bath and a blixing bath |
| US4769312A (en) * | 1985-10-15 | 1988-09-06 | Fuji Photo Film Co., Ltd. | Method of processing silver halide color photographic material including the use of a two bath desilvering system comprising two baths |
| US4812389A (en) * | 1985-09-25 | 1989-03-14 | Fuji Photo Film Co., Ltd. | Process for processing silver halide color photographic material containing DIR coupler having a group functioning as a development inhibitor |
-
1970
- 1970-09-16 JP JP45080512A patent/JPS4926586B1/ja active Pending
-
1972
- 1972-03-07 US US00232624A patent/US3809563A/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040837A (en) * | 1974-12-05 | 1977-08-09 | Konishiroku Photo Industry Co., Ltd. | Photographic bleach-fixer |
| US4184875A (en) * | 1977-04-30 | 1980-01-22 | Agfa-Gevaert, A.G. | Photographic reversal process |
| US4282313A (en) * | 1977-12-29 | 1981-08-04 | Agfa-Gevaert Aktiengesellschaft | Photographic material with stabilizers |
| US4268618A (en) * | 1979-07-05 | 1981-05-19 | Fuji Photo Film Co., Ltd. | Bleaching composition for photographic processing |
| DE3310956A1 (en) * | 1982-03-25 | 1983-09-29 | Fuji Photo Film Co., Ltd., Minami Ashigara, Kanagawa | METHOD FOR TREATING A COLOR PHOTOGRAPHIC, LIGHT-SENSITIVE MATERIAL |
| US4446225A (en) * | 1982-03-25 | 1984-05-01 | Fuji Photo Film Co., Ltd. | Method for processing color photographic light-sensitive material |
| US4717647A (en) * | 1984-09-21 | 1988-01-05 | Fuji Photo Film Co., Ltd. | Method for processing silver halide photographic elements in a bleaching bath and a blixing bath |
| US4812389A (en) * | 1985-09-25 | 1989-03-14 | Fuji Photo Film Co., Ltd. | Process for processing silver halide color photographic material containing DIR coupler having a group functioning as a development inhibitor |
| US4769312A (en) * | 1985-10-15 | 1988-09-06 | Fuji Photo Film Co., Ltd. | Method of processing silver halide color photographic material including the use of a two bath desilvering system comprising two baths |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4926586B1 (en) | 1974-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: KONICA CORPORATION, JAPAN Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:KONISAIROKU PHOTO INDUSTRY CO., LTD.;REEL/FRAME:005159/0302 Effective date: 19871021 |