US3879203A - Process for bleach-fixing color photographic silver halide material - Google Patents

Process for bleach-fixing color photographic silver halide material Download PDF

Info

Publication number
US3879203A
US3879203A US349229A US34922973A US3879203A US 3879203 A US3879203 A US 3879203A US 349229 A US349229 A US 349229A US 34922973 A US34922973 A US 34922973A US 3879203 A US3879203 A US 3879203A
Authority
US
United States
Prior art keywords
bleach
fix
silver
solution
developed
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
Application number
US349229A
Other languages
English (en)
Inventor
Karl-Wilhelm Schranz
Reinhard Muller
Erwin Schon
Wolfgang Hunicke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Application granted granted Critical
Publication of US3879203A publication Critical patent/US3879203A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/395—Regeneration of photographic processing agents other than developers; Replenishers therefor
    • G03C5/3958—Replenishment processes or compositions, i.e. addition of useful photographic processing agents
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/02—Details of liquid circulation
    • G03D3/06—Liquid supply; Liquid circulation outside tanks
    • G03D3/065—Liquid supply; Liquid circulation outside tanks replenishment or recovery apparatus

Definitions

  • the agent can be removed from the first stage and after the excess of silver is removed reused by introduction into the subsequent stage.
  • This invention relates to a process for bleach-fixing color photographic silver halide material which is particularly suitable for use in rapid processing machines.
  • the function of the bleach-fix bath is to dissolve all the silver in the layer of the photographic material out of the layer.
  • the image silver formed by color development being first oxidized by the bleaching agent present. Dissolved silver therefore accumulates in the bleach-fix bath.
  • the oxidizing power of bleach-fix baths is. however, sufficient also to oxidize color developer remaining in the layers of the color photographic material so that unwanted color coupling takes place. A general color fog is thereby produced which falsifies the colors of the image and spoils the quality of the image whites.
  • the bleach-fix bath is required to have a high oxidizing power not only to ensure complete bleaching of the image silver but also to produce a sufficient color density, especially that of the cyan dye which is reduced to a substantial extent to the leuco form by the reduced form of the bleaching agent in the bleach-fix bath, which is a powerful reducing agent.
  • Bleach-fix baths are in many cases basically non-toxic or at least the quantity of substances entering the effluent water or wash water from the bleach-fix bath can be kept low by constantly recirculating and thus reusing the bleach-fix baths and .regenerating them as required.
  • it is precisely when a cyclic process is used that the bath continuously accumulates silver so that even the small quantities of bleach-fix bath remaining in the gelatine layers may, when entering the limited volume of wash water in which the layers are washed after bleach-fixing, result in concentrations of silver ions in the effluent water which are above the tolerance limits.
  • Conforming to the regulations relating to effluent water therefore requires the concentration of silver ions in the bleach-fix bath to be kept very low, which is not possible in the cyclic process described above.
  • the color developed material instead of being bleach-fixed in a single tank, is passed through a series of tanks which all start with the same quantity of bleach-fix bath, then the major quantity of silver is found in the first tank or tanks while in the last tank the quantity of silver is so small that after the addition of wash water the silver ion concentration remains below the tolerance limit.
  • the oxidizing power of the bleach fix-bath at the beginning of the installation can be sufficiently diminished to prevent substantially oxidation of the color developer carried into the bath and hence prevent the formation of color fog without impairing the bleaching and fixing action of the bleach-fix bath.
  • the dimunition in oxidizing power is achieved either by reducing the pH or by adding reducing agents or by a combination of these two measures.
  • This invention relates to a process for bleach-fixing developed color photographic material using bleach-fix baths which contain as bleaching agent a heavy metal complex of a complex-forming aminopolyacetic acid and as fixing agent a silver salt solvent.
  • the developed color photographic material being passed through a length of bleach-fix bath.
  • the process comprises the bleach-fixing of the developed color photographic silver halide material in a bleach-fix installation containing two or more means or chambers.
  • the bleach-fix installation and its operation consists of a plurality of means or chambers for applying a bleachfixing solution to the developed color photographic material.
  • This plurality of application means is physically arranged so that the respective means are juxtaposed with respect to each other and successively receive the developed color photographic material,
  • the bleach-fixing solution is employed in each of the application means and is carried by liquid flow through the respective application means in the opposite direction to the movement of the color photographic material, otherwise referred to as countercurrent.
  • bleach-fix regenerator solution is introduced into the flow of the bleach-fixing solution at the end of the bleach-fix installation, opposite to the end at which the color photographic material is introduced.
  • an amount of the bleach-fix solution is removed from the application means where the color photographic material is introduced. Accordingly, a similar amount of bleach-fix solution is moved through the installation in the opposite direction to the movement of the color photographic material.
  • This regenerator or added supply for replenishment has a low silver content, preferably of less than 10 mg of silver per liter.
  • the process is preferably applied using the usual bleach-fix baths in which the bleaching agents consists of the cobalt(lll), copper(ll) or preferably iron(lll) complex of a complex-forming aminopolyacetic acid, preferably ethylene diaminetetraacetic acid and the fixing agent is preferably sodium thiosulfate.
  • the bleaching agents consists of the cobalt(lll), copper(ll) or preferably iron(lll) complex of a complex-forming aminopolyacetic acid, preferably ethylene diaminetetraacetic acid and the fixing agent is preferably sodium thiosulfate.
  • the color photographic material On leaving the bleach-fix bath, the color photographic material carries a certain amount of bleach-fix bath with it. Losses may also occur by splashing or evaporation, especially if the individual tracts of the bleach-fix bath are open and if elevated temperatures are employed to accelerate the process.
  • bleach-fix bath regenerator which contains little or no silver to the last zone of the bleach-fix bath.
  • the regenerator containing the above mentioned bleaching agent and a fixing agent may even be added in excess so that the bleach-fix bath flows in the opposite direction to the color photographic material.
  • the bleach-fix bath flows from the last zone into the preceding zone against the direction of flow of the color photographic material, and from there onwards to the beginning of the bleach-fix bath.
  • the reduction in concentration depends mainly on the ratio of quantity carried out of the bath by the photographic material a [ml/m to the quantity of regenen ator agent flowing in counter-current b [ml/m If one neglects the quantity of silver dissolved out of the photographic material in the following tracts of the bleachfix bath, then at a first approximation the reduction of silver concentration from tract to tract is b/a.
  • the number of zones arranged in series and/or the quantity of regenerator b may be so chosen that the silver concentration is reduced to a tolerable level in a wash water having the quantity w [ml/m
  • the silver concentration in the last zone c, may then be where c, the tolerance concentration in the wash water.
  • zones is used in the context of this invention to mean parts of the whole length of the bleach-fix bath.
  • the zones may be individual tanks arranged in a cascade in series and in which the color photographic material is passed through the bleach-fix bath by a process of immersion or they may be spray chambers arranged in series in which the bleach-fix bath is applied to the photographic material by spraying.
  • the zones may be dimensioned so that the times of stay of the color photographic material in the individual tracts are identical.
  • the subdivision of the length of the bleach-fix bath into several zones also makes it possible to diminish the oxidizingpower of the bleach-fix bath in the first zone following the color development.
  • dimunition in the oxidizing power is achieved either by adding an acid to the bleach-fix bath to reduce the'pH or by adding a reducing agent to reduce the redox potential. A combination of these two methods may also be used.
  • the optimum conditions in the first zone of the length of bleach-fix bath may advantageously be maintained by monitoring and control with the aid of electrometric measuring chains.
  • the pH is generally between 6 and 8. It has been found that the pH can be reduced to about 5 without impairing the bleaching and fixing action and that in fact exceptionally rapid bleaching takes place at a pH of about 5.5. At the same time, however, the oxidation of color developer carried into the bath is suppressed. Reduction of the pH in the first zone of the length of bleach-fix bath can be achieved by adding inorganic or organic acids, e.g., phosphoric acid or acetic acid.
  • Control of the pH is preferably carried out fully automatically, either continuously or intermittently, by means of a pH measuring chain consisting, for example, of a glass electrode and a calomel electrode and the potential of which controls the supply of acid by means of a simple control device and magnetic valve.
  • dimunition of the oxidizing power of the bleach-fix bath can also be achieved by adding a reducing agent to the first zone of the length of bleach-fix bath.
  • a reducing agent are,
  • constant conditions may again be maintained in the first zone of the length of bleach-fix bath by fully automatic control, e.g., to keep the rH- value (redox value) constant by adding reducing agent at the appropriate rate to compensate for the changes in the bleach-fix bath due to color developer entering the bleach-fix bath with the color photographic material and due to the inflow of regenerator in the opposite direction.
  • rH- value redox value
  • a similar measuring and control arrangement may be used as that described above for pH- control, but the measuring chain used in this case may be, for example, a glass electrode and platinum electrode.
  • the optimum redox potential to be maintained by addition of reducing agent in the first zone is between 0 and 100 mV more positive than the redox potential of the equivalence point defined by the 1:1 mixture of reduced and oxidized forms of the redox system used as bleaching agent.
  • FIG. 1 is a schematic representation of such a measuring and control arrangement.
  • the reference numeral 11 indicates zone 1 of the length of bleach-fix bath.
  • the two measuring electrodes 12 and 13 of the electrometric measuring chain dip into the bleach-fix bath.
  • 12 is a glass electrode; 13 is a calomel electrode for pH-control or a platinum electrode for rH-control.
  • the potential measured by the measuring instrument is amplified in the measuring amplifier 14 pH-con trol) or a reducing solution (for rH-control).
  • An overflow of bleach-fix bath enriched in silver is drawn off from the first zone.
  • the quantity drawn off depends on the quantity of bleach-fix bath regenerator added in the last zone.
  • the overflow can be desilvered by known methods, e.g., by electrolysis. by precipitation with sulfide or by cementation with iron, and can then be worked up into bleach-fix bath regenerator to be reused by adding to the last zone. This working-up may be carried out batchwise or continuously. Since most methods of desilvering inevitably also reduce the bleaching agent. it is advisable first to reduce the overflowing bleach-fix bath by adding reducing agent to the first zone for the sake of obtaining higher yields.
  • the process according to the invention of subdividing a length of bleach-fix bath into two or more separate zones, regenerating in counter-current to the direction of movement of material and reducing the oxidizing power in the first zone has the following advantages over previous processes in which only a single bleach-fix bath is used or in which several are used but regeneration is not carried out in cascade formation:
  • the silver concentration in the last zone can be kept so low before washing that the tolerance limits in the effluent water are not exceeded.
  • the process according to the invention may be used in tank installations and tank baths, for spray processes or also for roller application processes. It may be carried out with bleach-fix baths in which, for example, copper, cobalt or iron chelates of an aminopolyacetic acid, quinone or complex iron (III) cyanide are used as EXAMPLE 1 Color photographic paper 9 cm in width and having an overall surface area of 6 m was exposed imagewise, developed normally in a color developer and then bleach-fixed at 20C in a bleach-fix bath of the following composition:
  • the bleach-fix bath was distributed among six separate tanks through which the band of developed color photographic material was passed in succession in the course of 4 minutes. The color photographic material was free from silver on leaving the last tank. Then the silver contents in the individual tanks were as follows:
  • EXAMPLE 2 In this example. a length of bleach-fix bath subdivided into three tracts is described and the silver concentrations present when a state of equilibrium has been reached in continuous operation are calculated.
  • FIG. 2 shows schematically a length of bleach-fix bath consisting of three chambers 21, 22 and 23 and a washing chamber 24 adjacent thereto. After color development at 25, the color photographic material is introduced into chamber 21, passes successively through the individual chambers of the length of bleach-fix bath and then moves from the last chamber 23 into the washing chamber 24.
  • a [g/m denotes the quantity of silver introduced per m of color photographic material; a [l/m denotes the quantity of bath removed per m of color photographic material by uptake into the emulsion layers, and b [l/m denotes the quantity of regenerator 26 per in of color photographic material which flows into the last chamber 23 and is carried in countercurrent to the direction of movement of the photographic material into the front part of the length of bleach-fix bath and is removed as overflow 27 from the first chamber 21.
  • W [l/m is the quantity of wash water 28 per m of color photographic material which reduces the silver concentration of the bath leaving the last chamber 23 by the factor a/w. 29
  • Y is the effluent water leaving the washing chamber 24.
  • e denotes the proportion of silver which is dissolved out of the emulsion layers in the first chamber 21, i.e., e 0.90.
  • the silver concentration obtained in the effluent water then using the same proportions as in the example would be 12.2 mg/l, i.e., 65-times as high.
  • the method of bleach-fixing developed color photographic silver halide material comprising passing developed color photographic material into the plurality of separate means arranged in series for applying bleach-fix solution to the developed color material, passing the developed color material into the first means for applying bleach-fix solution and from the first means to and through at least one later means for applying a bleach-fix solution to the developed color material, introducing into said last bleach-fix applying means a bleach-fix solution having an oxidizing power at a pH of between 6 and 8 and a low silver content and containing a heavy metal complex of a complex forming aminopolyacetic acid as bleaching agent and a silver salt solvent as fixing agent first into the last means continuously passing the bleach-fix solution from one application means to the next adjacent application means countercurrent to the photomaterial passage by initially passing a portion of this last application means to the next adjacent means so that a portion is passed to the first means countercurrent to the direction of movement of said developed color photographic material; and diminishing the oxidizing power of the bleachfix solution in the first means by decreasing the pH to 5.5 or less,

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US349229A 1972-04-12 1973-04-09 Process for bleach-fixing color photographic silver halide material Expired - Lifetime US3879203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2217570A DE2217570A1 (de) 1972-04-12 1972-04-12 Verfahren zum bleichfixieren von farbfotografischem material

Publications (1)

Publication Number Publication Date
US3879203A true US3879203A (en) 1975-04-22

Family

ID=5841718

Family Applications (1)

Application Number Title Priority Date Filing Date
US349229A Expired - Lifetime US3879203A (en) 1972-04-12 1973-04-09 Process for bleach-fixing color photographic silver halide material

Country Status (6)

Country Link
US (1) US3879203A (US20080293856A1-20081127-C00139.png)
JP (1) JPS4911131A (US20080293856A1-20081127-C00139.png)
BE (1) BE797844A (US20080293856A1-20081127-C00139.png)
DE (1) DE2217570A1 (US20080293856A1-20081127-C00139.png)
FR (1) FR2180052B3 (US20080293856A1-20081127-C00139.png)
GB (1) GB1427386A (US20080293856A1-20081127-C00139.png)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065313A (en) * 1976-06-11 1977-12-27 Eastman Kodak Company Bleach-fix regeneration monitoring method
US4211630A (en) * 1974-06-26 1980-07-08 Ciba-Geigy Ag Electrolytic recovery of silver from photographic bleach-fix baths
WO1987002150A1 (en) * 1985-10-07 1987-04-09 Eastman Kodak Company Process and apparatus for multistage contacting
US4756918A (en) * 1985-10-18 1988-07-12 Fuji Photo Film Co., Ltd. Method for processing silver halide color photographic materials including a counter-current bleaching-fixation system
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
EP0296854A2 (en) * 1987-06-24 1988-12-28 Konica Corporation Method for processing light-sensitive silver halide color photographic material
US5221597A (en) * 1988-02-13 1993-06-22 Fuji Photo Film Co., Ltd. Method for processing silver halide color photographic materials
US5234801A (en) * 1989-07-24 1993-08-10 Fuji Photo Film Co., Ltd. Processing of silver halide color photographic material
US5353084A (en) * 1990-04-02 1994-10-04 Eastman Kodak Company Chemical reaction systems
EP0844527A1 (de) * 1996-11-25 1998-05-27 Agfa-Gevaert AG Verarbeitung farbfotografischer Materialien
WO2001050196A1 (en) * 2000-01-06 2001-07-12 Trebla Chemical Company One-part bleach-fix liquid concentrates
EP1160622A1 (en) * 2000-05-27 2001-12-05 Agfa-Gevaert N.V. A bleach-fixing concentrate
US6455236B1 (en) * 2000-01-06 2002-09-24 Trebla Chemical Company One-part bleach-fix liquid concentrates
EP1246007A1 (en) * 2001-03-30 2002-10-02 Eastman Kodak Company Processing solution supply cartridge

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS578543A (en) * 1980-06-18 1982-01-16 Konishiroku Photo Ind Co Ltd Processing method for color photographic sensitive silver halide material
JPS58105148A (ja) * 1981-12-17 1983-06-22 Fuji Photo Film Co Ltd カラ−写真処理方法
JPS6023857A (ja) * 1983-07-20 1985-02-06 Fuji Photo Film Co Ltd ハロゲン化銀カラ−感光材料の処理方法
JPS60244950A (ja) * 1984-05-21 1985-12-04 Fuji Photo Film Co Ltd カラ−写真感光材料の処理方法
JPS61149949A (ja) * 1984-12-25 1986-07-08 Konishiroku Photo Ind Co Ltd ハロゲン化銀写真感光材料用処理液の管理方法
JPS642047A (en) * 1987-06-24 1989-01-06 Konica Corp Method for processing silver halide color photographic sensitive material
JP2654778B2 (ja) * 1987-06-26 1997-09-17 コニカ株式会社 ハロゲン化銀カラー写真感光材料の処理方法
JP2654777B2 (ja) * 1987-06-25 1997-09-17 コニカ株式会社 ハロゲン化銀カラー写真感光材料の処理方法
JP2820613B2 (ja) * 1994-03-29 1998-11-05 新日本製鐵株式会社 酸化雰囲気中で接合可能な耐熱材料用液相拡散接合合金箔
US20050008613A1 (en) * 2003-05-22 2005-01-13 Coating Systems Laboratories, Inc. Antimicrobial quaternary ammonium organosilane coatings

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1991251A (en) * 1934-02-05 1935-02-12 Thomas M Ingman Apparatus for and process of developing film
US3189452A (en) * 1961-12-05 1965-06-15 Eastman Kodak Co Color-forming photographic process utilizing a bleach-fix followed by a bleach
US3634088A (en) * 1970-02-02 1972-01-11 Eastman Kodak Co Regeneration of blix solutions used in photographic processing
US3700450A (en) * 1971-01-07 1972-10-24 Eastman Kodak Co Regeneration of bleach-fix solutions used in photographic processing
US3751251A (en) * 1972-03-01 1973-08-07 Eastman Kodak Co Method for preparing bleach-fix regenerator concentrate
US3767401A (en) * 1971-12-15 1973-10-23 Minnesota Mining & Mfg Regeneration of photographic bleach/fix baths

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1991251A (en) * 1934-02-05 1935-02-12 Thomas M Ingman Apparatus for and process of developing film
US3189452A (en) * 1961-12-05 1965-06-15 Eastman Kodak Co Color-forming photographic process utilizing a bleach-fix followed by a bleach
US3634088A (en) * 1970-02-02 1972-01-11 Eastman Kodak Co Regeneration of blix solutions used in photographic processing
US3700450A (en) * 1971-01-07 1972-10-24 Eastman Kodak Co Regeneration of bleach-fix solutions used in photographic processing
US3767401A (en) * 1971-12-15 1973-10-23 Minnesota Mining & Mfg Regeneration of photographic bleach/fix baths
US3751251A (en) * 1972-03-01 1973-08-07 Eastman Kodak Co Method for preparing bleach-fix regenerator concentrate

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211630A (en) * 1974-06-26 1980-07-08 Ciba-Geigy Ag Electrolytic recovery of silver from photographic bleach-fix baths
US4065313A (en) * 1976-06-11 1977-12-27 Eastman Kodak Company Bleach-fix regeneration monitoring method
WO1987002150A1 (en) * 1985-10-07 1987-04-09 Eastman Kodak Company Process and apparatus for multistage contacting
US4719173A (en) * 1985-10-07 1988-01-12 Eastman Kodak Company Process for multistage contacting
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
US4756918A (en) * 1985-10-18 1988-07-12 Fuji Photo Film Co., Ltd. Method for processing silver halide color photographic materials including a counter-current bleaching-fixation system
EP0296854A2 (en) * 1987-06-24 1988-12-28 Konica Corporation Method for processing light-sensitive silver halide color photographic material
EP0296854A3 (en) * 1987-06-24 1989-11-29 Konica Corporation Method for processing light-sensitive silver halide color photographic material
AU602775B2 (en) * 1987-06-24 1990-10-25 Konica Corporation Method for processing light-sensitive silver halide color photographic material
US4983503A (en) * 1987-06-24 1991-01-08 Konica Corporation Method for processing light-sensitive silver halide color photogrpahic material
US5221597A (en) * 1988-02-13 1993-06-22 Fuji Photo Film Co., Ltd. Method for processing silver halide color photographic materials
US5234801A (en) * 1989-07-24 1993-08-10 Fuji Photo Film Co., Ltd. Processing of silver halide color photographic material
US5353084A (en) * 1990-04-02 1994-10-04 Eastman Kodak Company Chemical reaction systems
EP0844527A1 (de) * 1996-11-25 1998-05-27 Agfa-Gevaert AG Verarbeitung farbfotografischer Materialien
US5858631A (en) * 1996-11-25 1999-01-12 Agfa Gevaert Aktiengesellschaft Processing color photographic materials
WO2001050196A1 (en) * 2000-01-06 2001-07-12 Trebla Chemical Company One-part bleach-fix liquid concentrates
US6455236B1 (en) * 2000-01-06 2002-09-24 Trebla Chemical Company One-part bleach-fix liquid concentrates
EP1160622A1 (en) * 2000-05-27 2001-12-05 Agfa-Gevaert N.V. A bleach-fixing concentrate
US20040058283A1 (en) * 2000-05-27 2004-03-25 Gustav Tappe Bleach-fixing concentrate
EP1246007A1 (en) * 2001-03-30 2002-10-02 Eastman Kodak Company Processing solution supply cartridge
US6645708B2 (en) 2001-03-30 2003-11-11 Eastman Kodak Company Photofinishing processing system and a processing solution supply cartridge for the processing system
US20040062547A1 (en) * 2001-03-30 2004-04-01 Call Robert B. Photofinishing processing system and a processing solution supply cartride for the processing system
US6773174B2 (en) 2001-03-30 2004-08-10 Eastman Kodak Company Photofinishing processing system and a processing solution supply cartridge for the processing system

Also Published As

Publication number Publication date
BE797844A (nl) 1973-10-08
FR2180052B3 (US20080293856A1-20081127-C00139.png) 1976-03-26
JPS4911131A (US20080293856A1-20081127-C00139.png) 1974-01-31
DE2217570A1 (de) 1973-10-18
FR2180052A1 (US20080293856A1-20081127-C00139.png) 1973-11-23
GB1427386A (en) 1976-03-10

Similar Documents

Publication Publication Date Title
US3879203A (en) Process for bleach-fixing color photographic silver halide material
JP2534227B2 (ja) ハロゲン化銀カラ−写真感光材料の処理方法
US2322084A (en) Simultaneous bleaching and fixing bath
US5066570A (en) Wet processing of silver halide photosensitive material
US3767401A (en) Regeneration of photographic bleach/fix baths
US4857441A (en) Method for processing silver halide-containing photosensitive material for color photography
EP0540619A1 (en) Photographic bleach compositions
EP0466510A1 (en) Processing solution and method for processing a silver halide color photographic light-sensitive material
JPS6128949A (ja) ハロゲン化銀カラ−写真感光材料の処理方法
US5355191A (en) Photographic processing apparatus and method
JPH0553259A (ja) ハロゲン化銀感光材料の処理方法
EP0224858B1 (en) Method for processing silver halide color photographic light-sensitive material
EP0605036B1 (en) A method of bleaching and fixing a color photographic element
US4038079A (en) Process for the regeneration of photographic bleach-fix baths
JPS6224257A (ja) 写真用処理機及び銀回収装置
EP0620492B1 (en) Photographic processes
DE2137549A1 (de) Verfahren zur aufarbeitung photographischer bleichfixierbaeder
US3961958A (en) Process for fixing photographic material
US5922520A (en) Photographic processing method and tank
US5928844A (en) Method of photographic processing using spray wash after bleaching
JPS60247241A (ja) ハロゲン化銀カラ−写真感光材料の処理方法
Fyson Faster and faster colour processing
DE69725415T2 (de) Verfahren zum Entwickeln photographischer Materialien
JP2000305231A (ja) カラー画像形成方法
JPH0731390B2 (ja) ハロゲン化銀カラー写真感光材料の処理方法