US3617283A - Simultaneous bleach-fixing method in color photography - Google Patents

Simultaneous bleach-fixing method in color photography Download PDF

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Publication number
US3617283A
US3617283A US636669A US3617283DA US3617283A US 3617283 A US3617283 A US 3617283A US 636669 A US636669 A US 636669A US 3617283D A US3617283D A US 3617283DA US 3617283 A US3617283 A US 3617283A
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United States
Prior art keywords
color
bleach
fixing
compound
group
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
US636669A
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English (en)
Inventor
Reiichi Ohi
Hiroyuki Amano
Haruhiko Iwano
Kazuo Shirasu
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Fujifilm Holdings Corp
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Fuji Photo Film Co Ltd
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Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
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Publication of US3617283A publication Critical patent/US3617283A/en
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Expired - Lifetime legal-status Critical Current

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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/42Bleach-fixing or agents therefor ; Desilvering processes
    • G03C7/421Additives other than bleaching or fixing agents

Definitions

  • Color processing in general, consists of a number ofsteps, such as, color developing, stopping, bleaching, fixing, hardening and stabilizing, which need various chemicals depending on the light-sensitive materials to be processed.
  • steps such as, color developing, stopping, bleaching, fixing, hardening and stabilizing, which need various chemicals depending on the light-sensitive materials to be processed.
  • Such processings are carried out, for example, by passing the material to be processed through a color developing bath, a stop fixing bath, a water washing bath, a bleach-fixing bath, another water washing bath, a hardening bath, a further water washing bath and a stabilizing bath.
  • the material maybe passed through the successive baths by leader belt and and roller means.
  • potassium ferricyanide tends to be convened into potassium ferrocyanide.
  • the bleaching and fixing power is not always sufficient, but the coexistence of the oxidizing agent and thiosulfate is possible. Therefore the bleaching and fixing can proceed simultaneously in one bath.
  • thiourea or its derivative may be added to the bleach-fixing bath so as to increase the bleaching utility.
  • color stain often occurs from contamination of bleachfixing solution with the color developing solution. This phenomenon has been proved to relate closely to the construction of photographic materials and the type of photographic emulsions.
  • the upper layer is more susceptible to color stain. Therefore, in a color printing paper consisting of a red-sensitive layer with a cyan coupler as the uppermost layer, a green-sensitive layer with a magenta coupler as the middle layer, and a blue-sensitive layer with a yellow coupler as the lowermost layer, for example, cyan color stain occurs. Conversely, in a color printing paper having a blue-sensitive layer containing a yellow coupler as the uppermost layer, a green-sensitive layer containing a magenta coupler as the middle layer, and a red-sensitive layer containinga cyan coupler as the lowermost layer, yellow color stain occurs.
  • a magenta color stain occurs in a color positive film having three emulsion layers in thefollowing order, from the top, a green-sensitive layer containing a magenta coupler, a red-sensitive layer containing a cyan coupler and a blue-sensitive layer containing a yellow coupler.
  • a magenta color stain occurs even in the presence of an extremely small amount of thiourea or its derivative, for instance, a IO -IO g./l. color-developing solution thereof.
  • it is nearly impossible to prevent such color stain since many of the thiourea derivatives have absorptive properties and the elimination thereof is very difficult.
  • thiourea or its derivatives are absorbed on the leader belt and cannot be completely eliminated during the processing steps after bleach-fixing; that is, during the stages of washing, hardening, final washing and stabilizing. Therefore, thiourea or its derivatives, absorbed on the leader belt, enters into the color developing solution, resulting in color stain.
  • R, and R are alkyl, hydroxyalkyl, aryl and allyl groups or they may be linkedtogether to-form a heterocyclic ring
  • R is an alkyl,.hydroxyalkyl or allyl group when R and R, do not-form a heterocyclic ring
  • the compound- (I) showed remarkable acceleration of bleaching reaction in every case where it is added to a bath between the color developin'g'and bleach-fixing, or to a bleach-fixing bath itself.
  • Compound 7 Compound 1 may be synthesized in the conventional manner by heating ethylenediamine with carbon disulfide in a mixed solvent of water and alcohol (Cf. Roger Adams, Organic Synthesis published by John Wiley & Sons Co. Vol. 26, p. 34).
  • Compound 2 and compound 3 are similarly synthesized by reacting the corresponding diamine with carbon sulfide.
  • Compound 4 is obtained by reacting methyl isothiocyanate with N-methyl-ethanolamine in ether, distilling the ether and recrystallizing the residue from ethyl acetate.
  • the amount of the foregoing compound to be added to bleach-fixing solution is from 0.1 g./l. to the minimum dissolving amount of each compound, preferably 0.3 g./l. to 5 g./l. These compounds may be used separately or together.
  • the acceleration of bleaching reaction by the compound can also be observed when it is added to any of the processing solutions between the color development and bleach-fixing bath in an amount within the range mentioned above.
  • EXAMPLE 2 Compounds l-9 were added to a color developing solution containing N-ethyl-N-fl-hydroxyethyl-p-phenylenediamine and dissolved completely. A color positive film was then treated with color developing solutions respectively to give the following results.
  • magenta stain was formed.
  • EXAMPLE 3 Compounds [-8 of example 1 were added to the following bleach-fixing solution by the amount of 2 g. per lOOO ml. respectively. 1,000 11 iron Salt of EDTA 34 g. Sodium Carbonate (monohydrate) H g. Boric Acid 45 g. Sodium Thiosulfalc g. Additive 2 g. Water to Make 1,000 ml. pH 6.8
  • a color paper was exposed. developed, fixed and then passed through these bleach-fixing baths. The times required to remove the developed silver were shown in the table below.
  • EXAMPLE 4 Compounds 1-7 of example 1 were added to the following stop fixing solution in an amount of l g. per 1000 ml. respectively.
  • R and R each represents a member of an alkyl group, a hydroxyalkyl group, and aryl group and an allyl group, said R and R, can form together a heterocyclic ring
  • R represents a member selected from the group consisting of an alkyl group, a hydroxyalkyl group and a an allyl group when R and R do not form a heterocyclic ring

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US636669A 1966-05-06 1967-05-08 Simultaneous bleach-fixing method in color photography Expired - Lifetime US3617283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2837766 1966-05-06

Publications (1)

Publication Number Publication Date
US3617283A true US3617283A (en) 1971-11-02

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ID=12246932

Family Applications (1)

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US636669A Expired - Lifetime US3617283A (en) 1966-05-06 1967-05-08 Simultaneous bleach-fixing method in color photography

Country Status (5)

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US (1) US3617283A (xx)
BE (1) BE698038A (xx)
DE (1) DE1547876A1 (xx)
ES (1) ES340238A1 (xx)
GB (1) GB1150466A (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767401A (en) * 1971-12-15 1973-10-23 Minnesota Mining & Mfg Regeneration of photographic bleach/fix baths
US4033771A (en) * 1973-08-16 1977-07-05 Eastman Kodak Company Stabilized bleach-fixing baths
US4191575A (en) * 1972-12-07 1980-03-04 Philip A. Hunt Chemical Corp. Two-step photographic processing of black and white images which enhances the images by controlled bleaching during fixing immediately following development and which produces black and white images with reduced density in low density areas
US4322493A (en) * 1978-09-26 1982-03-30 Fuji Photo Film Co., Ltd. Reversal processing methods for black and white photographic light-sensitive materials
US4500632A (en) * 1981-09-09 1985-02-19 Fuji Photo Film Co., Ltd. Process for stabilizing silver images
US4554242A (en) * 1984-01-12 1985-11-19 Fuji Photo Film Co., Ltd. Method for processing color photographic light-sensitive material
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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1029592A (en) * 1972-12-07 1978-04-18 Philip A. Hunt Chemical Corporation Two-step photographic processing of black and white images which enhances the images by controlled bleaching during fixing immediately following development and which produces black and white images with reduced density in low-density areas
JPS58105150A (ja) * 1981-12-17 1983-06-22 Fuji Photo Film Co Ltd カラ−写真処理装置
DE3723195A1 (de) * 1987-07-14 1989-01-26 Agfa Gevaert Ag Bleichbaeder mit bleichbeschleunigenden substanzen
GB9005130D0 (en) * 1990-03-07 1990-05-02 Kodak Ltd Silver removal from photographic products

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487446A (en) * 1945-12-08 1949-11-08 Gen Aniline & Film Corp Process for preventing stains on photographic color material during drying following exposure, bleaching, and fixing treatment
US3034893A (en) * 1959-03-27 1962-05-15 Rolf S Bruenner Method of dissolving finely divided metals
US3189452A (en) * 1961-12-05 1965-06-15 Eastman Kodak Co Color-forming photographic process utilizing a bleach-fix followed by a bleach
US3372030A (en) * 1962-12-14 1968-03-05 Pavelle Corp Method of shortening the processing time of color photography

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487446A (en) * 1945-12-08 1949-11-08 Gen Aniline & Film Corp Process for preventing stains on photographic color material during drying following exposure, bleaching, and fixing treatment
US3034893A (en) * 1959-03-27 1962-05-15 Rolf S Bruenner Method of dissolving finely divided metals
US3189452A (en) * 1961-12-05 1965-06-15 Eastman Kodak Co Color-forming photographic process utilizing a bleach-fix followed by a bleach
US3372030A (en) * 1962-12-14 1968-03-05 Pavelle Corp Method of shortening the processing time of color photography

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767401A (en) * 1971-12-15 1973-10-23 Minnesota Mining & Mfg Regeneration of photographic bleach/fix baths
US4191575A (en) * 1972-12-07 1980-03-04 Philip A. Hunt Chemical Corp. Two-step photographic processing of black and white images which enhances the images by controlled bleaching during fixing immediately following development and which produces black and white images with reduced density in low density areas
US4033771A (en) * 1973-08-16 1977-07-05 Eastman Kodak Company Stabilized bleach-fixing baths
US4322493A (en) * 1978-09-26 1982-03-30 Fuji Photo Film Co., Ltd. Reversal processing methods for black and white photographic light-sensitive materials
US4500632A (en) * 1981-09-09 1985-02-19 Fuji Photo Film Co., Ltd. Process for stabilizing silver images
US4554242A (en) * 1984-01-12 1985-11-19 Fuji Photo Film Co., Ltd. Method for processing color photographic light-sensitive material
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
DE1547876A1 (de) 1969-12-11
BE698038A (xx) 1967-10-16
ES340238A1 (es) 1968-06-01
GB1150466A (en) 1969-04-30

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