US2432864A - Photographic elements bearing silver halide emulsion layer and adjacent light-insensitive colloid layer containing silver derivatives of azoles - Google Patents

Photographic elements bearing silver halide emulsion layer and adjacent light-insensitive colloid layer containing silver derivatives of azoles Download PDF

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Publication number
US2432864A
US2432864A US573460A US57346045A US2432864A US 2432864 A US2432864 A US 2432864A US 573460 A US573460 A US 573460A US 57346045 A US57346045 A US 57346045A US 2432864 A US2432864 A US 2432864A
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United States
Prior art keywords
mercapto
silver
layer
silver halide
halide emulsion
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Expired - Lifetime
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US573460A
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English (en)
Inventor
Dimsdale Wilfrid Hampden
Robinson Richard Robert
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Ilford Imaging UK Ltd
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Ilford Ltd
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Priority claimed from GB196344A external-priority patent/GB573745A/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/35—Antiplumming agents, i.e. antibronzing agents; Toners
    • G03C1/355—Organic derivatives of bivalent sulfur, selenium or tellurium
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
    • G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium
    • 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
    • Y10S430/13—Antibronze agent or process

Definitions

  • This invention relates-to photographic lightsensitive elements, toco-mpounds which serve as improvers for photographic sil-ver halide emulsions, and particularly to compounds which improve the quality of the developed photographic images obtained in such emulsions.
  • These compounds may be introduced into ⁇ the emulsion itself, or into a subcoat, supercoat or backing A.layer,'or 'they may be'included in the Wrapping materials used.
  • the compounds may be applied 'in ⁇ solution fto 'the emulsion before or during development, e. g. by including them 'in the developing solution used.
  • These compounds iso used, .not l'only improve the maximum image density obtainableand serve as anti-bronzing agents, but also reduce the level ⁇ of foginthe Adevelopedimage.
  • the .present invention is concerned With. a methodof including ⁇ the compounds in the pho- Ato-sensitive .element itself .in a form such that anytendency .for lthe compoundto reduce the speed ofthe photo-sensitive emulsion .is reduced or -eliminated.
  • aphotographic emulsion ⁇ or toa colloid medium other Ythan'the emulsion which forms a vWaterperr-nealcle layer vin a photographic .element including a silver halide .emulsion layer, a silver derivative of a ⁇ compound which, when added in itsfree state, or in the4 state of its alkalimetal derivative, improves the quality 'of photoygraphic. images developed in such emulsion layers.
  • L The term added is intended to mean ⁇ that the siiver derivative ,itself is added orthat reagents are added which reactamong themselves to form the ⁇ silver derivative.
  • silver derivative is intendedto mean a derivative resulting from replacement of hydrogen ⁇ in the said compound by silver.
  • the silver derivatives are added to colloid media which are to be used for coating layers in Contact Withthe silver halide emulsion layer or layers.
  • the silver derivative may be included in Aa supercoat layer, e. g., a colloid layer-coated on top of the photographic emulsion layer and forming, for example, anouter layer of the element, or may be .includedin a subcoatlayer, e. g., a colloid layer v lying between a photographic'emulsion layer and a support layer, or may be included in an inter-layer between two emulsion layers. It may, however, be present in other layers, for example a backing layer.
  • Fig. 1 is a cross section of a film bearing a silver halide emulsion layer ⁇ and a superposed layer containing an anti-bronzing agent of the type described below;
  • Fig. 2 is a cross section of a similar lm wherein the silver halide layer is outermost;
  • Fig. 3 is a cross section of a similar film wherein a colloid layer containing an anti-bronzing agent is disposed between two emulsion layers;
  • Fig. 4 is a cross section of a modified lm wherein the two layers are on opposite surfaces.
  • a iilm support l is provided with a silver halide emulsion layer 2 on which there is disposed a water-permeable colloid layer 3 containing an anti-bronzing agent of the type disclosed below.
  • a lm support I is provided with a water-permeable colloid layer 4 containing an anti-bronzing agent as herein disclosed on which there is disposed a silver halide emulsion layer 5.
  • the element of Fig. 3 consists of a nlm support I bearing silver halide emulsion layers 6 and 8. between which there is disposed a water-permeable colloid layer 'l containing an anti-bronzing agent as herein disclosed.'
  • the element of Fig. 4 consists of a lm support l bearing a silver halide emulsion layer 9 on one surface and having disposed on the other surface a water-permeable eolloid layer l containing a herein disclosed anti-bronzing agent.
  • the silver derivative is included in a supercoat or in the emulsion layer itself, that it should be in a very fine state of subdivision in the layer in which it is incorporated.
  • a convenient method of use is to form the silver derivative in situ in the colloid medium in which it is to be dispersed, for example by the double decomposition of a soluble silver salt and an alkali-metal derivative of the compound in a gelatin medium.
  • the invention may be applied to all varieties of compound which are capable of improving the quality of the developed image and which will form silver derivatives.
  • EXAMPLE I 1 gram of 1-phenyl-2-methyl-5-mercapto- 1.3.4-triazole was dissolved in 3.6 ccs. of a 40% aqueous solution of sodium carbonate (Cryst). This solution was added to 250 ccs. of a 4.4% solution of gelatin (containing a small quantity of dispersing agent) and made up to 500 ccs. with water. 77.7 ccs. of a 1% aqueous solution of silver nitrate was added to 250 ccs.
  • EXAMPLE II The procedure given in Example I was followed with the variations that the compound used was l-phenyl--mercapto-tetrazole, it was dissolved in 5.0 ccs. of the sodium carbonate solution and the quantity of silver nitrate solution taken was 95.5 ccs. All other conditions remained the same EXAMPLE IV
  • the silver derivative of lr-phenyl--mercapto tetrazole was prepared and added in finely divided condition to silver chloride and silver bromide emulsions, one part of the silver derivative being added per 1000 parts of emulsion. Tests were made as before and gave the results set out in Table IV.
  • a photographic element comprising a silver halide emulsion layer and, in Contact therewith,
  • a Water-permeable light-insensitive colloid layerl which contains a silver derivative of a compound selected from the class consisting of -mercaptotetrazoles, -mercapto-1.3.4-triazoles, diazoles containing up to three sulphur atoms attached to carbon atoms which are in a-positions to the cyclic nitrogen atoms, mercapto hydroxy diazoles, dimercapto monazoles and monomercapto monazoles.
  • a photographic element comprising a silver halide emulsion layer and an outer water-permeable light-insensitive colloid layer in contact with saidemulsion layer, said outer layer containing a preformed silver derivative of a compound selected from the class consisting of 5- mercapto-tetrazoles, 5 mercapto-1.3.4-triazoles, diazoles containing up to three sulphur atoms attached to carbon atoms which are in aL-positions to the cyclic nitrogen atoms, mercapto hydroxy diazoles, dimercapto monazoles and mono mercapto monazoles.
  • a compound selected from the class consisting of 5- mercapto-tetrazoles, 5 mercapto-1.3.4-triazoles, diazoles containing up to three sulphur atoms attached to carbon atoms which are in aL-positions to the cyclic nitrogen atoms, mercapto hydroxy diazoles, dimercapto monazoles and mono mer
  • a photographic element comprising a silverhalide emulsion layer of which the predominant silver halide is silvei ⁇ chloride and, in contact therewith, a water-permeable light-insensitive colloid layer which contains a silver derivative of a compound selected from the class consisting of -mercapto tetrazoles, 5 mercapto 1.3.4-triazoles, diazoles containing up to three sulphur atoms attached to carbon atoms which are in a-positionsvto the cyclic nitrogen atoms, mercapto hydroxy diazoles, dimercapto monazoles and mono mercapto monazoles.
  • a photographic element comprising a silver halide emulsion layer of Which the predominant silver halide is silver chloride and an outer waterpermeable light-insensitive cclloid layer in contact with said emulsion layer, said outer layer containing a silver derivative of a compound selected frum the class consisting of 5-mercaptotetrazoles, 5-mercapto-1.3.4triazoles, diazoles containing up to three sulphur atoms attached to carbon atoms which are in na-positions to the cyclic nitrogen atoms, mercapto hydroxy diazoles, dimercapto monazoles and mono mercapto monazoles.
  • a photographic element comprising a paper support carrying a silver halide emulsion layer and an outer Water-permeable light-insensitive colloid layer in Contact with said emulsion layer, said outer layer containing a silver derivative of a compound selected from the class consisting of 5-mercapto-tetrazoles, 5-rnercapto-1.3.4triazoles, diazoles containing up to three sulphur atoms attached to carbon atoms which are in a-positions to the cyclic nitrogen atoms, mercapto hydroxy diazoles, dimercapto monazoles and mono mercapto monazoles.
  • WILFRID HAMPDEN DIMSDALE RICHARD ROBERT ROBINSON.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
US573460A 1944-02-03 1945-01-18 Photographic elements bearing silver halide emulsion layer and adjacent light-insensitive colloid layer containing silver derivatives of azoles Expired - Lifetime US2432864A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB196344A GB573745A (en) 1944-02-03 1944-02-03 Improvements in or relating to photographic light-sensitive elements
GB2432865X 1945-01-26

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US2432864A true US2432864A (en) 1947-12-16

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US573460A Expired - Lifetime US2432864A (en) 1944-02-03 1945-01-18 Photographic elements bearing silver halide emulsion layer and adjacent light-insensitive colloid layer containing silver derivatives of azoles
US601922A Expired - Lifetime US2432865A (en) 1944-02-03 1945-06-27 Photographic elements having light-sensitive silver halide layers containing iron, cobalt and nickel derivatives of mercapto tetrazoles, triazoles or diazoles

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US601922A Expired - Lifetime US2432865A (en) 1944-02-03 1945-06-27 Photographic elements having light-sensitive silver halide layers containing iron, cobalt and nickel derivatives of mercapto tetrazoles, triazoles or diazoles

Country Status (4)

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US (2) US2432864A (en, 2012)
BE (1) BE463544A (en, 2012)
DE (1) DE821757C (en, 2012)
FR (1) FR920156A (en, 2012)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699393A (en) * 1950-04-15 1955-01-11 Agfa Ag Fur Photofabrikation Photographic process for the direct production of positive images
US2843491A (en) * 1956-05-23 1958-07-15 Eastman Kodak Co 2-mercapto-1, 3, 4-oxadiazoles as antifoggants
US2939789A (en) * 1958-06-06 1960-06-07 Gen Aniline & Film Corp Fog reduction in photographic silver halide emulsions
US3206311A (en) * 1961-05-05 1965-09-14 Polaroid Corp Stacked photosensitive elements
US4202695A (en) * 1971-12-09 1980-05-13 Agfa-Gevaert N.V. Photographic Lippmann emulsions
US5543281A (en) * 1995-02-17 1996-08-06 Eastman Kodak Company Mercaptotetrazole transition metal salts for control of cyan stain
US6730467B1 (en) 1998-01-26 2004-05-04 Eastman Kodak Company Sensitization of cubic AgCl emulsions with improved wet abrasion resistance
US6790600B2 (en) 2003-02-07 2004-09-14 Eastman Kodak Company Method of color photographic processing for color photographic papers

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2628167A (en) * 1948-04-29 1953-02-10 Du Pont Method of making colloid silver halide emulsions containing thallium
US2950972A (en) * 1954-11-24 1960-08-30 Gen Aniline & Film Corp Photographic emulsions having increased sensitivity to x-ray and gamma ray radiation
BE545888A (en, 2012) * 1955-03-08
BE545887A (en, 2012) * 1955-03-08
US2839405A (en) * 1955-03-08 1958-06-17 Eastman Kodak Co Inorganic salt antifoggants for photographic emulsions
BE545779A (en, 2012) * 1955-03-08
BE548727A (en, 2012) * 1955-06-21
BE579710A (en, 2012) * 1958-06-16
DE1772903A1 (de) * 1968-07-19 1971-06-16 Agfa Gevaert Ag Photographisches Material
JPS53134430A (en) * 1977-04-27 1978-11-24 Mitsubishi Paper Mills Ltd Silver halide photosensitive materials for multiilayer color photograph

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB390037A (en) * 1928-01-31 1933-03-30 Ig Farbenindustrie Ag An improvement in photographic emulsions
US2057764A (en) * 1933-07-22 1936-10-20 Agfa Ansco Corp Manufacture of stabilized silver halide emulsions
US2221805A (en) * 1939-02-02 1940-11-19 Eastman Kodak Co Photographic emulsion
US2377375A (en) * 1943-12-14 1945-06-05 Eastman Kodak Co Thiosalicylic acid antifoggant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB390037A (en) * 1928-01-31 1933-03-30 Ig Farbenindustrie Ag An improvement in photographic emulsions
US2066099A (en) * 1928-01-31 1936-12-29 Agfa Ansco Corp Photographic emulsion
US2057764A (en) * 1933-07-22 1936-10-20 Agfa Ansco Corp Manufacture of stabilized silver halide emulsions
US2221805A (en) * 1939-02-02 1940-11-19 Eastman Kodak Co Photographic emulsion
US2377375A (en) * 1943-12-14 1945-06-05 Eastman Kodak Co Thiosalicylic acid antifoggant

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699393A (en) * 1950-04-15 1955-01-11 Agfa Ag Fur Photofabrikation Photographic process for the direct production of positive images
US2843491A (en) * 1956-05-23 1958-07-15 Eastman Kodak Co 2-mercapto-1, 3, 4-oxadiazoles as antifoggants
US2939789A (en) * 1958-06-06 1960-06-07 Gen Aniline & Film Corp Fog reduction in photographic silver halide emulsions
US3206311A (en) * 1961-05-05 1965-09-14 Polaroid Corp Stacked photosensitive elements
US4202695A (en) * 1971-12-09 1980-05-13 Agfa-Gevaert N.V. Photographic Lippmann emulsions
US5543281A (en) * 1995-02-17 1996-08-06 Eastman Kodak Company Mercaptotetrazole transition metal salts for control of cyan stain
US6730467B1 (en) 1998-01-26 2004-05-04 Eastman Kodak Company Sensitization of cubic AgCl emulsions with improved wet abrasion resistance
US6790600B2 (en) 2003-02-07 2004-09-14 Eastman Kodak Company Method of color photographic processing for color photographic papers
US20040180303A1 (en) * 2003-02-07 2004-09-16 Schwartz Paul A. Method of color photographic processing for color photographic papers
US20040197714A1 (en) * 2003-02-07 2004-10-07 Eastman Kodak Company Method of silvery recovery from color photographic processing
US6838233B2 (en) 2003-02-07 2005-01-04 Eastman Kodak Company Method of color photographic processing for color photographic papers

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Publication number Publication date
US2432865A (en) 1947-12-16
BE463544A (en, 2012)
FR920156A (fr) 1947-03-31
DE821757C (de) 1951-11-19

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