US2609292A - Light-sensitive photographic element and process using it - Google Patents

Light-sensitive photographic element and process using it Download PDF

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Publication number
US2609292A
US2609292A US682300A US68230046A US2609292A US 2609292 A US2609292 A US 2609292A US 682300 A US682300 A US 682300A US 68230046 A US68230046 A US 68230046A US 2609292 A US2609292 A US 2609292A
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United States
Prior art keywords
silver
layer
light
colour
photographic
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Expired - Lifetime
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US682300A
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English (en)
Inventor
Waller Cecil
Dickinson Harold Owen
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Ilford Imaging UK Ltd
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Ilford Ltd
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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
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/8255—Silver or silver compounds therefor

Definitions

  • the colloid layer becomes coloured to a yellow to' red or brown hue.
  • the substantially colourless colloid layer containing silver sulphide nuclei also contains a silver compound as a source of silver ions, or is coated adjacent to a second colloid layer which contains a silver compound as a source of silver ions, and the treatment with the reducing agent is effected in the presence of a solvent for the silver compound, e. g. sodium thiosulphate or thiocyanate.
  • a solvent for the silver compound e. g. sodium thiosulphate or thiocyanate.
  • a useful way of forming the coloured colloid layer is to coat in super-position on a support a colloid layer containing silver sulphide nuclei and a colloid layer containing silver halide, and to treat the combination with a reducing agent, e. g. a photographic developer, containing a silver halide solvent.
  • a reducing agent e. g. a photographic developer, containing a silver halide solvent.
  • a proportion of silver halide may be included in the colloid layer containing the silver sulphide nuclei and the layer treated with a photographic developer containing a Vsilver halide solvent.
  • Colloid layers containing silver sulphide nuclei may be prepared by various methods.
  • the mere addition of silver nitrate followed by a short heating, e. g. at 120 F., may be suflicient to cause formation of suilicient silver sulphide nuclei by reaction between the silver nitrate and the sulphur compounds naturally present in gelatin.
  • a small quantity of a silver halide preferably in the form of a photographic emulsion, may be employed.
  • Suitable sulphur compounds which may be thus employed are thiourea, allyl thiourea, thiosulphates, thiosemicarbazide and allyl thiosemicarbazide.
  • the formation of the silver sulphide nuclei is best eiected by heating the gelatin containing the silver compound and the sulphur compound for a short period. Temperatures of the order of F. are Vsuitable and the duration of the heating may be from 5 to 60 minutes or more, though the shorterfperiods of treating are usually adequate. It is perferable that the pH of the solution should be above about 5.8.
  • Colloid layers thus prepared are substantially colourless .since the silver sulphide nuclei impart no appreciable colour or opacity to the colloid ⁇
  • the coloured colloid layers .of this invention are of particular value as lter-A layers inmultilayer photographic elements for usev in .colour photography, and according to a further feature of this invention, therefore, a photographic element comprising a plurality of photographic emulsion layers carried on a support also includes a layer or layers of a substantially colourless colloid containing silver sulphide nuclei, such layer or layers containing a silver compound as a source of silver ions or being coated adjacent to a silver halide emulsion layer.
  • a photographic element which comprises the following layers:
  • Such a photographic element exposed to record v a coloured object, the rays 'beingjncident on layer emulsion layers.
  • the layers b and d may be transposed and their processing correspondingly varied.
  • the layers c :and-fe may be adapted "to yield ⁇ rector".red-brown images and the ⁇ colour of the exposing "light used Y for re-exposing the layers correspondingly adjusted to a wavelength, or band of wavelengths,
  • the intensity of the developed colour depends ⁇ onthe particularfconditions prevailing, i. e. on
  • the nature-of the layers cand ve and on the development conditions A- veryv intense colouration is'usually obtained by including a/source of silver ions in the layers c and 'e themselvesfor example by including' a smallproportion of silver halide.
  • the added silver halide can usefully be a line grain emulsionsincethisis not only of high transparency but, presumably by termeson of vthe liinenerss of grain of the silver halide, is very reactiveas a'source of silver ions.
  • the nature and quantity of the silver halide added' should not be suclnho'wever, that any substantial 'light-sensitivity-'is imparted to layers c ande since these should not give any Vappreciable black silver image on development.
  • the ⁇ emulsion layers of the photographic ele- 'ment :obtained by the procedure outlined above can be :further selectively processed to colour by making use of the coloured layers c and e Yas light-barrier layers.
  • the element may be exposed to blue light through the support and then developed in a solution containing :an aromatic Yprimary .amino developing agent and a colourl-former .which combines With the oxidation .products of such developing agent, formed during development, to form a bluegreen azomethineor quinone-imine dyeimage in situ with the developed positive record in layer b.
  • the .element ⁇ may then beexposed to blue 'lightincident on layer f and that layer similarly processed ⁇ to 'form a positive yellow image in layer j. Neither of these treatments affect layer d since the blue exposing light is absorbed by the yellow layers c and e.
  • Layer d may then be rendered developable either by exposure to very bright light, Yadequate to penetrate 'layer c or e or by X-rays or by chemical treatment, e. g. With a 5% aqueous solution of sodium arsenite or hydrogen peroxide or with guanidine thiocyanate. This layer .may .be similarly developed to form in it a positive magenta image.
  • V16k-photographic multi-layer element was prepared consisting of the ⁇ following layers in superposition inthe order stated. l
  • the element was then exposed toviolet light passing through the support a and then developed in a developer of the following composition:
  • the process described above and'exemplied in the foregoing example may be modiiied'in various ways.
  • the-'exposedV positive silver halide records may be processed to colour by methods other than colour-development, e. g. by dye toning or chemical toning. f
  • one or more'ofthe emulsion layers may contain colour-immers;- the following isan example of such a process: 4
  • Example A photographic multi-layer element wasf'prepared consisting of the following layers in superposition in the order stated as illustrated in the accompanying drawing:
  • a photographic element which comprises a support Vcarrying at least three superimposed layers, the outer ones of which are colloid silver halide photographic emulsion layers and the middle one of which is a layer of substantially colourless colloid containing silver sluphide nuclei, of such particle size and quantity that they impart no colour to the layer, the said colourless colloid' containing a quantity of silver compound insuiliciently sensitive to light Vto produce any appreciable image in the-saidcolourless colloid layer on photographic development, but suiiicient in quantity to producegwith'thei aid 'of said silver sulphide nuclei, alayer of silversubstantially opaque to blue light on photographic development.
  • a photographic element which comprises v(a) a transparent Vsubstantially colourless sup-- port and in superimposition thereon, in order, (b) asilver halide emulsion layer sensitive to red light, (c) a layer ofA a colourless colloid containing silver sulphide nuclei of suchparticle size and quantity that they 'impart no colourl to the layer, and a quantity 'of a silver compound soluble in alkali thiosulphate insufficiently sensitive to light to yield any appreciable image on photographic development but suiiicient in quantity to produce, with the aid of said silver sulphide nuclei,'a4 layer of silver ⁇ substantially opaque to blue light on photographic'develop* ment (d) a silver halide emulsion layer sensitive to green light, (e) a layer of colourless colloid containing silver sulphide nuclei of such particle size and quantity that they impart nocolou'rrto the layer, and a quantity of a silver compound
  • a photographic element which comprises (a) a transparent substantially colourless support and in superimposition thereon, in order, (b) a silver halide emulsion layer sensitive'to red light, (c) a layer of a colourless colloid containing silver sulphide nuclei of such particle size and quantity that they impart ⁇ no colour ⁇ to the layer, and a quantity of silver rhalide insuf'- flciently sensitive to light tofyield any ⁇ appreciable l, image on photographic development but suflicient in quantity to produce, with the aid of said silver sulphide nuclei, a layer of.
  • a silver halide emulsionlayer sensitive to green light (d) a silver halide emulsionlayer sensitive to green light, (e) a layer of colourless Acolloid containing silversulphide nuclei of such'lpfflrticle size and quantity that they impart no colour to the layer, and a quantity of silver halide insufently sensitive to light to Vyield any appreciable image on photographic development but Asuicient in quantity to produce, with theaid of said silver sulphide nuclei, a layer of 'silvensubsta'ntially opaque to blue lighten photographic development, and a removable yellow colouring'material, and (f) a silver halide emulsion' sensitive only to blue light.
  • a photographic element which comprises (a) a transparent substantially colourless support and in superimposition thereon,.in order, (b) a silver halide emulsion layer sensitive to red light, (c) a layer of a colourless colloid containing silver sulphide nuclei of such particle size and quantity that they impart no colour to the layenand a quantity of an emulsion of silver halide insufficiently sensitive to light to yield any appreciable image on photographic development but sufcient in quantity to produce, with the aid of said silver sulphide nuclei, a layer of silver substantially opaque to blue light on photographic development, (d) a silver halide emullof'sanv emulsion, of.
  • silver ⁇ halide insuiiiciently sensitive to light to ,yield any1;altlpreciable ⁇ image en .photographic development but suicient in .quantity to,.produce, withthe.aid of said's'ilver sulphide :nuclei, a layer of lsilver substantially opaque. toblue light on photographic ⁇ development, and-fa removable yellow colouring material, and (f) afsilver halide emulsionsensitiveponly to blue light.
  • a photographic element which comprises (a) Aa'transparent substantially colourless support and' in superimposition thereon, in order, 1(1))A a silverhalide emulsion layersensitive to red light, ⁇ (c) a layer of a colourless colloid containing silver sulphide nuclei of such particle size and quantity that they impart no colour to the layer, and a quantity of an emulsion of silver halide insuiiiciently sensitive to light to yield any appreciable image on photographic development but sulcient in quantity to produce, with the aid of said silver sulphide nuclei, a layer of silver substantially opaque to blue light on photographic development, (d) a silver halide emulsion layer sensitive to green light, (e) a layer of colourless colloid containing silver sulphide nuclei of such particle size and quantity that they impart no colour to the layer, and a quantity of an emulsion of silver halide insuiciently sensitive to light to yield any appreciable image on photographic development but sufficient in
  • a process of colour photography which includes the step of treating an exposed photographic element which comprises (a) a transparent substantially colourless support and in super-imposition thereon, in order, (b) a silver halide emulsion layer sensitive to red light, (c) a layer of a colourless colloid containing silver sulphide nuclei of such particle size and quantity that they impart no colour to the layer and a quantity of a silver compound soluble in alkali thiosulphate insufficiently sensitive to light to yield any appreciable image on photographic development but sufficient in quantity to produce, with the aid of said silver sulphide nuclei, a layer of silver substantially opaque to lblue light on photographic development, (d) a silver halide emulsion layer sensitive to green light, (e) a layer of colourless colloid containing silver sulphide nuclei of such particle size and quantity that they impart no colour to the layer and a quantity of a silver compound soluble in alkali thiosulphate insufficiently sensitive to light to yield any
  • a process of colour photography which comprises treating an exposed photographic element which comprises (a) .a transparent substantially colourless support and in superimposition thereon, in order, (b) a silver halide emul- 10 sion layer sensitive j to redl light;V (c) a layer y.of a colourless :colloid .zcontaining silver.- sulphide nuclei of such particlesize and quantity :that they impartv no.
  • a process of colour photography which comprises treating an exposed photographic element which comprises (a) a transparent substantially colourless support and in superimposition thereon. in order, (b) a silver halide emulsion layer sensitive to red light, (c) a layer of a colourless colloid layer containing silver sulphide nuclei of such particle size and quantity that they impart no colourv to the layer and a quantity of a silver compound soluble in alkali thiosulphate insufciently sensitive to light to yield any appreciable image on photographic development but sufficient in quantity to produce, with the aid of said silver sulphide nuclei, a layer of silver substantially opaque to blue light on photographic development.
  • a silver halide emulsion layer sensitive to green light (d) a silver halide emulsion layer sensitive to green light, (e) a layer of colourless colloid containing silver sulphide nuclei of such particle size and quantity that they impart no colour to the layer and a quantity of a silver compound soluble in alkali thiosulphate insufficiently sensitive to light to yield any appreciable image on photographic development but sufficient in quantity to produce, with the aid of said silver sulphide nuclei, a layer of silver substantially opaque to blue light on photographic development, and a removable yellow colouring material, and (f) a silver halide emulsion sensitive only to blue light by the following operations; develop in a non-colour-forming developer, bleach out the developed records in layers bl, d and f, develop in adeveloper containing a silver halide solvent.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US682300A 1945-07-10 1946-07-09 Light-sensitive photographic element and process using it Expired - Lifetime US2609292A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB17544/45A GB595582A (en) 1945-07-10 1945-07-10 Improvements in or relating to coloured colloid layers
GB1754446 1946-07-09

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US (1) US2609292A (enrdf_load_stackoverflow)
DE (1) DE874705C (enrdf_load_stackoverflow)
FR (1) FR959749A (enrdf_load_stackoverflow)
GB (1) GB595582A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362470A (en) * 1991-05-30 1994-11-08 Konica Corporation Ultrafine gold and/or silver chalcogenide and production thereof

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1279276A (en) * 1917-01-25 1918-09-17 Eastman Kodak Co Tinting process and product thereof.
US1898512A (en) * 1927-01-07 1933-02-21 Agfa Ansco Corp Process of manufacturing photographic silver salt emulsions and lightsensitive material
US2088523A (en) * 1934-02-14 1937-07-27 Belz Gaspar Multicolor photographic material
US2153617A (en) * 1935-06-22 1939-04-11 Agfa Ansco Corp Manufacture of colored photographic pictures
GB511800A (en) * 1938-02-25 1939-08-24 Kodak Ltd Filter-layers for colour photography
US2172262A (en) * 1936-05-09 1939-09-05 Eastman Kodak Co Ultraviolet filter in multilayer film
US2191502A (en) * 1937-01-22 1940-02-27 Pont Film Mfg Company Du Multicolor film and process
US2262055A (en) * 1940-01-25 1941-11-11 Du Pont Film Mfg Corp Method of color photography
FR879995A (fr) * 1941-01-24 1943-03-10 Ig Farbenindustrie Ag Procédé pour la constitution d'images photographiques positives
US2320418A (en) * 1935-06-22 1943-06-01 Gen Aniline & Film Corp Color photographs
US2327764A (en) * 1941-05-09 1943-08-24 Eastman Kodak Co Ultraviolet filter
US2352014A (en) * 1941-07-21 1944-06-20 Rott Andre Photomechanical printing process and printing material for carrying out the same
US2376202A (en) * 1943-05-27 1945-05-15 Eastman Kodak Co Retarding diffusion of sensitizing dyes
FR900266A (fr) * 1942-12-05 1945-06-25 Gevaert Photo Prod Nv Procédé pour la production d'images photographiques partielles corrigées

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1279276A (en) * 1917-01-25 1918-09-17 Eastman Kodak Co Tinting process and product thereof.
US1898512A (en) * 1927-01-07 1933-02-21 Agfa Ansco Corp Process of manufacturing photographic silver salt emulsions and lightsensitive material
US2088523A (en) * 1934-02-14 1937-07-27 Belz Gaspar Multicolor photographic material
US2153617A (en) * 1935-06-22 1939-04-11 Agfa Ansco Corp Manufacture of colored photographic pictures
US2320418A (en) * 1935-06-22 1943-06-01 Gen Aniline & Film Corp Color photographs
US2295013A (en) * 1936-05-09 1942-09-08 Eastman Kodak Co Method of developing multilayer photographic color films
US2172262A (en) * 1936-05-09 1939-09-05 Eastman Kodak Co Ultraviolet filter in multilayer film
US2191502A (en) * 1937-01-22 1940-02-27 Pont Film Mfg Company Du Multicolor film and process
GB511800A (en) * 1938-02-25 1939-08-24 Kodak Ltd Filter-layers for colour photography
US2262055A (en) * 1940-01-25 1941-11-11 Du Pont Film Mfg Corp Method of color photography
FR879995A (fr) * 1941-01-24 1943-03-10 Ig Farbenindustrie Ag Procédé pour la constitution d'images photographiques positives
US2327764A (en) * 1941-05-09 1943-08-24 Eastman Kodak Co Ultraviolet filter
US2352014A (en) * 1941-07-21 1944-06-20 Rott Andre Photomechanical printing process and printing material for carrying out the same
FR900266A (fr) * 1942-12-05 1945-06-25 Gevaert Photo Prod Nv Procédé pour la production d'images photographiques partielles corrigées
US2376202A (en) * 1943-05-27 1945-05-15 Eastman Kodak Co Retarding diffusion of sensitizing dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362470A (en) * 1991-05-30 1994-11-08 Konica Corporation Ultrafine gold and/or silver chalcogenide and production thereof

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Publication number Publication date
GB595582A (en) 1947-12-09
FR959749A (enrdf_load_stackoverflow) 1950-04-04
DE874705C (de) 1953-04-27

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