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US2050588A - Manufacture of anti-halation or filter layers - Google Patents

Manufacture of anti-halation or filter layers Download PDF

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Publication number
US2050588A
US2050588A US586966A US58696632A US2050588A US 2050588 A US2050588 A US 2050588A US 586966 A US586966 A US 586966A US 58696632 A US58696632 A US 58696632A US 2050588 A US2050588 A US 2050588A
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United States
Prior art keywords
solution
halation
parts
weight
molal
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Expired - Lifetime
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US586966A
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English (en)
Inventor
Schneider Wilhelm
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.)
GAF Chemicals Corp
Original Assignee
Agfa Ansco Corp
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Filing date
Publication date
Application filed by Agfa Ansco Corp filed Critical Agfa Ansco Corp
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Publication of US2050588A publication Critical patent/US2050588A/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
    • G03C1/76—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
    • G03C1/83—Organic dyestuffs therefor
    • G03C1/831—Azo dyes
    • 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
    • G03C1/83—Organic dyestuffs therefor

Definitions

  • My present invention relates to anti-halation or filter layers for photographic materials.
  • Figs. 1 to 3 show lms or plates in accordance with the present invention in cross-section.
  • I is the support
  • 2 is the emulsion layer.
  • Fig. 1 the lm is provided with a lter layer 3 and in Figs. 2 and 3 the film is provided with an anti-halation layer 4.
  • anti-halation layers which do not bleed out in aqueous solutions and in the usual photographic baths and which can be decolorized in a simple manner may be obtained by developing the dye in a solution of a binding agent from its components and producing the layer from this mass.
  • a binding agent for example, water insoluble azo dyes which enter into consideration comprising monoand poly-azo-dyes
  • I enumerate the coupling products of, for instance, aniline, naphthylamine, benzidine, diaminocarbazole, diaminodiphenylene oxide, and the substitution products thereof with the coupling components, for instance, phenols, naphthols and the substitution products thereof.
  • suitable colloids may be used. for instance, gelatine, the calcium salt of polyglycuronic acid and caseine.
  • the solution of the binding agent is mixed with the coupling component while adding the required amount of alkali, for instance, sodium hydroxide or sodium carbonate, whereupon the diazo-component is added to this mixture while stirring. After having become solid the mass is reduced to small pieces, for instance, cut in strips, and washed until its reaction has become neutral.
  • alkali for instance, sodium hydroxide or sodium carbonate
  • a special bath for removing the coloration of the anti-halation layer can, therefore, be dispensed with.
  • the negative may 5 be treated with an oxidizing bath, for instance, an aqueous solution of 2 grams of potassium permanganate and cc. of sulfuric acid per liter, which bath contains a halide, whereupon the produced silver-halide picture is transformed into I0 a stable silver picture by means of a second exposure and a subsequent reduction by means of a developer or a suitableagent, fort instance hydrosulte.
  • Example 1 A solution of '70 parts by weight of gelatine in 800 parts by Weight of water is cooled to 25 C. and mixedwith 100 parts by weight of a molal solution of sodium betanaphtholate and 3 parts by weight of anhydrous Then 100 parts by weight of molal diazo solution of alphanaphthylamine are slowly introduced,-while stirring. The solution immediately becomes intensely red. It is caused to solidify, cut into small pieces and washed with water. After it has been molten, it is utilized in the usual manner for bottom coatings for the emulsion layer or for coating the surface of the emulsion layer or, if required, also the back layer of the support.
  • Example 2 --A violet colouration is obtained by using in Example l instead of the diazo solution of alphanaphthylamine 100 parts by weight of a- 1/20 molal diaz@ so1ution of dianisidine.. 35
  • Example 3 A solution of to 100 parts by Weight of gelatine in 800 parts by weight of water is mixed with parts by weight of T15 molal solution of sodium -naphtholate and 3 parts by weight of sodium carbonate. To this mixture kept at about 25 C. there are added 100 parts by weight of a 1/20 molal diazo solution of benzidine. The solution becomes immediately dark red. The further working up of the mass is as described in Example 1.
  • Example 4 When replacing in Example 3 the 116 molal solution of sodium -naphtholate by a 116 molal solution of 1.7-aminophenol andthe l/zo diazo solution of benzidine by a l/20 diazo ⁇ solution of dianisidine a greenish blue mass is obtained which yields layer having a nearly black appearance when being about 5 to 6 a thickf Example 5.
  • a fuchsine-red solution of gelatine is obtainable by using equal parts of a 55 molal solution of sodium p-naphtholate-and of a 1/20 molal diazo solution of toluidine.
  • Example 6 A blue solution of gelatine with a .cast to red is obtainable by using equal parts of a 116 molal solution of sodium -naphtholate and a 1/20 molal diazo solution of dianisidine.
  • My invention is not limited to the foregoing examples nor to the specic details given therein and I contemplate as included within my invenlion all such modications and equivalents as fall within the scope of the appended claims.
  • anti-halation layer as used in the specification and the claims is to include antihalation layers and lter layers.
  • a method of producing anti-halation layers which comprises mixing a solution of a binding agent with a. coupling component of an azo dye of the group consisting of monoand polyazo dyes and alkali, adding to this mixture a diazo component, while stirring, reducing the mass after it has become solid to small pieces, washing the pieces until their reaction has become neutral and preparing the anti-halation layers from this product.
  • a method of producing anti-halation layers which comprises mixing a solution of 70 parts by weight of gelatine in 800 partsby weight of water with 100 parts by weight of 116 molal solution of 1.7-aminonaphthol, and 3 parts by weight of anhydrous sodium carbonate cooling the mixture to about 25 C., adding slowly while stirring 100 parts by-weight of a 1/20 molal diazo solution of dianisidine, reducing the mass after it has become solid to small pieces, washing the pieces V until their reaction has become neutral, and preparing the layers from this product.
  • a method of producing anti-halation layers which comprises mixing a solution of- '70 parts by weight of gelatine in 800 parts by weight of Water with 100 parts by weight of a 11s molal solution of sodium -naphtholate, and 3 parts by weight of anhydrous sodium carbonate, cooling the mixture to about 25C., adding slowly while stirring 100 parts by weight of a 116 molal diazo solution of a-naphthylamin, reducing the mass after it has become solid to small pieces, washing the pieces until their reaction has become neutral, and preparing the layerslfrom this product.
  • a method of producing anti-halation layers which comprises mixing a solution of parts by weight oir gelatine in 800 parts by weight of water with parts by weight of a 116 molal solution of sodium -naphtholate, and 3 parts by weight of anhydrous sodium carbonate cooling the mixture to about 25 C., adding slowly while stirring'lOO parts by weight of a 1/m molal diazo solution of benzidine, reducing the mass after it has become solid to small pieces, washing the pieces until their reaction has become neutral, and preparing the layers from this product.
  • a method oi' producing anti-halation layers which comprises mixing a solution of gelatine with a coupling component of an azo dye of the group consisting of monoand polyazo dyes and alkali, adding to this mixture a diazo component, while stirring, reducing the mass after it has become solid to small pieces, washing the pieces until their reaction has become'neutral and preparing the anti-halation layers from this product.
  • a photographic material which comprises a support, a light sensitive silver-halide emulsion and an anti-halation layer comprising a binding agent and an azo dye, said azo dye being insoluble in water.
  • a photographic material which comprises a support, a light sensitive silver-halide emulsion and an anti-halation layer comprising a binding agent and an azo dye.
  • said azo dye being insoluble in water, but soluble in the oxidizing reversal baths.
  • a photographic material which comprises a support, a light sensitive silver-halide emulsion. and an anti-halation layer comprising a. binding agent and an azo dye, said azo dye being insoluble in water, but soluble in a solution of potassium permanganate and sulfuric acid.
  • a photographic material which comprises a support, a light-sensitive silver halide emulsion and an anti-halation layer containing the azo dye from 1.7-amino-naphthol and di-anisidine.
  • a photographic material which comprises a support, a light-sensitive silver halide emulsion and an anti-halaton layer containing the azodye from sodium -naphtholate and a-naphthylamine.
  • a photographic material which comprises a support, a light-sensitive silver halide emulsion and an anti-halation layer containing the azo dye from sodium -naphtholate and benzidine.
  • a photographic material which comprises a support, a light sensitive silver halide emulsion and an anti-halation layer comprising gelatin containing an azo dye insoluble in water.
  • a photographic material which comprises a support, a light sensitive silver halide emulsion and an anti-halation layer comprising gelatin containing an azo dye insoluble in water but soluble in oxidizing reversal baths.
  • a photographic material which comprises a support, a light sensitive silver halide emulsion and an anti-halaton layer comprising gelatin containing an azo dye insoluble in water but soluble in a solution of potassium permanganate and sulfuric acid.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Optical Filters (AREA)
US586966A 1931-01-22 1932-01-15 Manufacture of anti-halation or filter layers Expired - Lifetime US2050588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI40490D DE557144C (de) 1931-01-22 1931-01-22 Verfahren zur Herstellung photographischer Filter- und Lichthofschutzschichten

Publications (1)

Publication Number Publication Date
US2050588A true US2050588A (en) 1936-08-11

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US586966A Expired - Lifetime US2050588A (en) 1931-01-22 1932-01-15 Manufacture of anti-halation or filter layers

Country Status (5)

Country Link
US (1) US2050588A (fr)
BE (1) BE385844A (fr)
DE (1) DE557144C (fr)
FR (1) FR730229A (fr)
GB (1) GB383799A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496843A (en) * 1948-03-10 1950-02-07 Gen Aniline & Film Corp Photographic elements containing hydroxy heavy metal salts of trinuclear iminol cyanine dyes as filter and antihalation dyes
US2632004A (en) * 1949-09-29 1953-03-17 Eastman Kodak Co Resin azo dye
US5124242A (en) * 1990-01-16 1992-06-23 Fuji Photo Film Co., Ltd. Silver halide photographic element with hydrophobic undercoat polymer layer and hydrophobic dye layer
US5213954A (en) * 1989-07-31 1993-05-25 Minnesota Mining And Manufacturing Company White light handleable negative-acting silver halide photographic elements

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2496843A (en) * 1948-03-10 1950-02-07 Gen Aniline & Film Corp Photographic elements containing hydroxy heavy metal salts of trinuclear iminol cyanine dyes as filter and antihalation dyes
US2632004A (en) * 1949-09-29 1953-03-17 Eastman Kodak Co Resin azo dye
US5213954A (en) * 1989-07-31 1993-05-25 Minnesota Mining And Manufacturing Company White light handleable negative-acting silver halide photographic elements
US5124242A (en) * 1990-01-16 1992-06-23 Fuji Photo Film Co., Ltd. Silver halide photographic element with hydrophobic undercoat polymer layer and hydrophobic dye layer

Also Published As

Publication number Publication date
DE557144C (de) 1932-08-19
GB383799A (en) 1932-11-24
FR730229A (fr) 1932-08-09
BE385844A (fr) 1932-02-29

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