US2971840A - Process for the production of nonlaterally reversed positive copies by heat development - Google Patents

Process for the production of nonlaterally reversed positive copies by heat development Download PDF

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Publication number
US2971840A
US2971840A US562578A US56257856A US2971840A US 2971840 A US2971840 A US 2971840A US 562578 A US562578 A US 562578A US 56257856 A US56257856 A US 56257856A US 2971840 A US2971840 A US 2971840A
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United States
Prior art keywords
layer
silver halide
sulfur
transfer
layers
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
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US562578A
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English (en)
Inventor
Haydn Hildegard
Konig Anita Von
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Agfa Gevaert NV
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Agfa AG
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Publication date
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Publication of US2971840A publication Critical patent/US2971840A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D9/00—Diffusion development apparatus
    • G03D9/006—Diffusion development apparatus using heat
    • 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
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/40—Development by heat ; Photo-thermographic processes

Definitions

  • the depth of color and tone of the dyestuffs can be influenced by adding heavy metal salts, such as copper sulphate, zince sulphate, ferric nitrate, alum, cerium nitrate, uranium nitrate, Reinecke salt and others or amines, such as aromatic monoand polyamines, which may be substituted as for instance aniline, toluidine, xylidine, m-phenylendiamine, m-toluylendiamine, asym. dimethyl-pphenylendiamine, 4,4'-diaminoride, silver bromide and silver iodide emulsions, even.
  • heavy metal salts such as copper sulphate, zince sulphate, ferric nitrate, alum, cerium nitrate, uranium nitrate, Reinecke salt and others or amines, such as aromatic monoand polyamines, which may be substituted as for instance aniline,
  • the transfer layer contains compounds which easily split off sulfur at temperatures of about 80l50 C., such as ammoniumsulfide, metal sulfides as for instance alkali and alkaline earth sulfides (sodiumsulfide, calciumsulfide), ironsulfide, zincsulfide, cadmiumsulfide, aluminiumsulfide (that is to say such metal sulfides are of special advantage which are soluble in mineral acids, such as 10% hydrochloric acid), ammoniumpolysulfides, sodiumpolysulfides, calciurnpolysulfides (Na S Na S- CaS C387) or other alkali or alkaline earth polysulfides, polythionates, such as sodium trithionate, bariumtrithionates, Wackenroders solution and salts derived from said solution, such as potassium tetrathionate and pentathionate, and furthermore organic compounds such as thioamides, especially thi
  • a binding agent for the transfer layer and for the silver halide layer there may be used gelatine, polyvinylalcohol, polyvinylpyrrolidone, celluose derivatives, alginates, mixtures of said substances or other natural-or synthetic film forming substances which are swellable' in water.
  • ad-' vantage compounds which are capable of forming water containing crystals, such as sodiumacetate, trisodiumphosphate, sodiumsulfate. In this case the solutions must contain sufficient water so that after evaporation the transfer layer contains a certain quantity of crystal water.
  • the compounds may also be added to the silver halide emulsion layer.
  • glycerine, glycols or corresponding hygroscopic substances may be added to the transfer layer and/or to the silver halide emulsion layer.
  • Thequantities of said compounds may vary within wide limits according to the nature of the substances actually used..
  • Sodium acetate may for instance be used in quantities of about 5-150 g. per litre of silver halide emulsion or solution for the preparation of the transfer layer.
  • the glycerine and the other compounds may be applied in corresponding quantities. i
  • the heavy metal salts are preferably applied in quantitles of about 520% by weight as calculated on the sulfur compounds.
  • the developing substance is added to the silver halide layer preferably in quantities of about 8-20 g. per litre of silver halide emulsion.
  • the pH of the emulsion is preferably kept between 5.0 and 6.5.
  • the transfer paper can be coated on both sides, it being possible for the positive paper to be arranged between two negative papers during the heat development, so that a double-sided copy is obtained in a single operation.
  • the silver halide layer is exposed to an object to be reproduced and thereafter brought in contact with the transfer layer.
  • the combined layers are then heated for about 10-60 seconds to a temperature of about l50 0, preferably 110- 135 C., whereby the transfer layer may be heated to a somewhat lower temperature than the negative layer, such as ll0 C.
  • Hot presses, high-glaze presses which can be heated electrically, drying drums and the like are suitable for the development and simultaneous image transfer. After separating the two layers a laterally correct color reproduction of the original to be reproduced is obtained.
  • Negative material 10 g. of the hydrochloric acid salt of 4-aminophenol, g. of sodium acetate and 150 cc. of water are added to 1 litre of any desired silver halide emulsion.
  • Other additives known in the emulsion art can be used.
  • the emulsion is cast on to paper or any other conventional support and dried.
  • Positive (Transfer) material '20 g. of sodium sulphide are dissolved in 500 cc. of water and made up with a 10% aqueous solution of polyvinyl alcohol to 1000 cc. The solution is cast on to paper or any other suitable layer support and dried.
  • the negative paper After exposure, the negative paper is brought into contact with the positive paper.
  • the two papers are then subjected for 10 to 60 seconds to a temperature of to by means of a glazing press or two flat-irons.
  • the positive paper can be heated to a lower temperature.
  • Negative material Positive material '20 g. of sodium. trithionate, 10 g. of sodium acetate andZ g. of Reineckesalt are dissolved in 600 cc. of
  • Example 1 The processing takes place as indicated in Example 1 and a positive image of brown to brownish-violet color is obtained.
  • Negative material 10 g. of p-methylaminophenol sulphate and 100 g. of sodium acetate dissolved in water are added to 1000 cc. of a silver halide emulsion. Other additives can be used.
  • a silver halide layer is cast from said emulsion on a paper support.
  • Positive material 40 g. of sodium trithionate are dissolved in 600 cc. of water and 300 cc. of a 10% aqueous solution of polyvinyl alcohol and 100 cc. of glycerine are added thereto.
  • Negative material 10 g. of 5-amino-2-cresol are dissolved in Water and added to 1000 cc. of a silver halide emulsion, to Which r The additives referred to in Example 1 can be used for the negative material.
  • Positive material As described in Example 1, 2 or 3.
  • the positive obtained after processing as described in Example 1' is light brown in color.
  • Negative material '10 g. of 3-chloro-4-aminophenol are added to 1000 cc. of a silver halide emulsion. 100 g. of sodium acetate dissolved in a little water are added thereto. This emulsion is cast ona paper support and dried.
  • Negative material 10 g. of 2,5'-toluylene 'diamine are dissolved in water glycerine are added.
  • Negative material 10 g. of 2.5-diaminoanisole are dissolved in water and added to 1000 cc. of a silver halide emulsion, to which are then added cc. of sodium acetate and 20 g. of benztriazole. This emulsion is cast on a paper support and dried.
  • Example 1 Positive material As in Example 1, 2 or 3. A bright red image dyestuff is obtained after the processing as described in Example 1.
  • Negative material 10 g. of 4-4-diaminodiphenylamine hydrochloride are dissolved in water and added to 1000 cc. of any desired silver halide emulsion.
  • 100 g. of sodium acetate, 10 cc. of 40% citric acid and 20 cc. of 5% benztriazole are then added to the emulsion. This emulsion is coated on a paper support and dried.
  • Example 1 Positive material As in Example 1, 2 or 3. A bluish-violet dyestufi image is essing as in Example 1.
  • Positive material A solution is prepared containing 40 g. of sodium trithionate, 5 g. of 1,3-phenylene diamine, 1 g. of ferric chloride, 600 cc. of polyvinyl alcohol and 100 cc. of glycerine. This solution is coated on a paper support and dried.
  • Negative material 8 g. of pyrocatechol dissolved in water, 200 g. of hydrated sodium acetate crystals and 15 cc. of benztriazole (5%) or other stabilizers are added to one liter of silver halide emulsion. This emulsion is cast on a paper support and dried.
  • Positive material 30 g. of thiourea are dissolved in water and added to 500 cc. of an aqueous polyvinyl alcohol solution (10%). Thereupon 10 g. of sodium carbonate and 100 cc. of
  • Negative material 10 g. of 3-hydroxy-4-aminidiphenylamine hydrochloride are dissolved in Water and added to 1000 'cc. of a silver halide emulsion. g. of sodium acetate and 15 cc. of benzotriazol (5%) or the equivalent amount of an- .other stabilizer are added to the emulsion. This emule sion is cast-on a paper support and dried.
  • Process for the production of non-laterally reversed photographic sulfur-dyestufi images without the use of treating baths said process being characterized by the steps of providing a light-sensitive solid silver halide emulsion layer that contains an organic silver halide developer selected from the class consisting of aromatic amino and aromatic hydroxy developers which forms a sulfur-dyestuif when heated to from 80 to 150 C. with a compound splitting 01f sulfur, providing a separating supported transfer layer containing a compound which splits oif sulfur at a temperature of about 80 to 150 C., at least one of said layers containing hydrated material that liberates suflicient moisture on heating to 80 to 150 C.
  • the transfer layer contains an amine selected from the class consisting of aniline, toluidine, xylidine, m-phenylenediamine, mtoluylendiamine, asym. dimethyl-p-pheny1endiamine, 4,4- diaminodiphenyl, 3,3-dimethoxy-4,4' diaminodiphenyl, 1,4-naphthylendiaminesulfat, 2,6-naphthylen-diamine.
  • an amine selected from the class consisting of aniline, toluidine, xylidine, m-phenylenediamine, mtoluylendiamine, asym. dimethyl-p-pheny1endiamine, 4,4- diaminodiphenyl, 3,3-dimethoxy-4,4' diaminodiphenyl, 1,4-naphthylendiaminesulfat, 2,6-naphthylen-

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
US562578A 1955-02-07 1956-01-31 Process for the production of nonlaterally reversed positive copies by heat development Expired - Lifetime US2971840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA22040A DE1004043B (de) 1955-02-07 1955-02-07 Verfahren zur Herstellung seitenrichtiger, positiver Bilder durch Waermeentwicklung

Publications (1)

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US2971840A true US2971840A (en) 1961-02-14

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US (1) US2971840A (en))
BE (1) BE544850A (en))
CH (1) CH341389A (en))
DE (1) DE1004043B (en))
FR (1) FR1140789A (en))
GB (1) GB801053A (en))

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043691A (en) * 1956-06-09 1962-07-10 Agfa Ag Process and material for the direct production of positives by the silver salt diffusion process
US3079858A (en) * 1956-02-25 1963-03-05 Agfa Ag Process for the production of printing forms
US3211551A (en) * 1957-12-10 1965-10-12 Lumoprint Zindler Kg Diffusion transfer process
US3248219A (en) * 1960-09-06 1966-04-26 Cons Electrodynamics Corp Photographic element for dry processing
US3257205A (en) * 1960-10-12 1966-06-21 Gevaert Photo Prod Nv Method for heat development
US3266370A (en) * 1960-10-20 1966-08-16 Alvin M Marks Electro-thermo-phototropic compositions and apparatus
US3275437A (en) * 1963-01-24 1966-09-27 Du Pont Image transfer process and elements therefor
US3306747A (en) * 1962-12-26 1967-02-28 Polaroid Corp Diffusion transfer product with microcapsules containing glycerin-water solutions
US3313913A (en) * 1961-03-06 1967-04-11 Zindler Lumoprint Kg Electrically heated machine for producing photographic copies
US3335006A (en) * 1962-09-15 1967-08-08 Agfa Ag Heated diffusion transfer using leucophthalocyanines
US3397983A (en) * 1961-02-17 1968-08-20 Gevaert Photo Prod Nv Photographic materials producing a color change by reacting a metal salt with tetrahydroquinoline
US3409430A (en) * 1959-07-15 1968-11-05 Zindler Lumoprint Kg Method of making copies by diffusion transfer
US3914125A (en) * 1964-09-21 1975-10-21 Minnesota Mining & Mfg Diffusion transfer element and method of using same
US4009034A (en) * 1973-07-09 1977-02-22 Xerox Corporation Dry film processing
US4271254A (en) * 1977-10-28 1981-06-02 Ciba-Geigy Ag Process for producing photographic images
US5270145A (en) * 1991-12-06 1993-12-14 Eastman Kodak Company Heat image separation system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE573503A (en)) * 1957-12-03
DE1175988B (de) * 1958-04-19 1964-08-13 Zindler Lumoprint Kg Verfahren zum Entwickeln und gleichzeitigen Stabilisieren belichteter fotografischer Halogen-silberemulsionsschichten, Material zur Durch-fuehrung dieses Verfahrens und Verfahren zur Herstellung dieses Materials
US3041170A (en) * 1959-10-29 1962-06-26 Eastman Kodak Co New class of development promoter precursors for dry processing self-developing silver halide coatings
US3220846A (en) * 1960-06-27 1965-11-30 Eastman Kodak Co Use of salts of readily decarboxylated acids in thermography, photography, photothermography and thermophotography
DE1182958B (de) * 1962-02-10 1964-12-03 Agfa Ag Geraet zur Erzeugung von photographischen Bildern und Druckformen mit Hilfe von Waerme
DE1298415B (de) * 1962-10-29 1969-06-26 Eastman Kodak Co Verfahren zur UEbertragung von Bildern

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US742405A (en) * 1901-12-17 1903-10-27 Farbenfabriken Elberfeld Co Photographic plate and process of making same.
US809651A (en) * 1902-07-25 1906-01-09 Solon Vathis Process for producing multicolored photographic proofs.
GB427962A (en) * 1933-10-27 1935-04-29 Werner Paul Leuch Improvements in or relating to the production of photographic diazotype prints
US2352014A (en) * 1941-07-21 1944-06-20 Rott Andre Photomechanical printing process and printing material for carrying out the same
US2704721A (en) * 1954-04-22 1955-03-22 Polaroid Corp Photographic diffusion transfer reversal processes
US2740717A (en) * 1952-05-03 1956-04-03 Eastman Kodak Co Photographic transfer process
US2747999A (en) * 1953-03-16 1956-05-29 Eastman Kodak Co Photographic reproduction process

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US742405A (en) * 1901-12-17 1903-10-27 Farbenfabriken Elberfeld Co Photographic plate and process of making same.
US809651A (en) * 1902-07-25 1906-01-09 Solon Vathis Process for producing multicolored photographic proofs.
GB427962A (en) * 1933-10-27 1935-04-29 Werner Paul Leuch Improvements in or relating to the production of photographic diazotype prints
US2352014A (en) * 1941-07-21 1944-06-20 Rott Andre Photomechanical printing process and printing material for carrying out the same
US2740717A (en) * 1952-05-03 1956-04-03 Eastman Kodak Co Photographic transfer process
US2747999A (en) * 1953-03-16 1956-05-29 Eastman Kodak Co Photographic reproduction process
US2704721A (en) * 1954-04-22 1955-03-22 Polaroid Corp Photographic diffusion transfer reversal processes

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079858A (en) * 1956-02-25 1963-03-05 Agfa Ag Process for the production of printing forms
US3043691A (en) * 1956-06-09 1962-07-10 Agfa Ag Process and material for the direct production of positives by the silver salt diffusion process
US3211551A (en) * 1957-12-10 1965-10-12 Lumoprint Zindler Kg Diffusion transfer process
US3409430A (en) * 1959-07-15 1968-11-05 Zindler Lumoprint Kg Method of making copies by diffusion transfer
US3248219A (en) * 1960-09-06 1966-04-26 Cons Electrodynamics Corp Photographic element for dry processing
US3257205A (en) * 1960-10-12 1966-06-21 Gevaert Photo Prod Nv Method for heat development
US3266370A (en) * 1960-10-20 1966-08-16 Alvin M Marks Electro-thermo-phototropic compositions and apparatus
US3397983A (en) * 1961-02-17 1968-08-20 Gevaert Photo Prod Nv Photographic materials producing a color change by reacting a metal salt with tetrahydroquinoline
US3313913A (en) * 1961-03-06 1967-04-11 Zindler Lumoprint Kg Electrically heated machine for producing photographic copies
US3335006A (en) * 1962-09-15 1967-08-08 Agfa Ag Heated diffusion transfer using leucophthalocyanines
US3306747A (en) * 1962-12-26 1967-02-28 Polaroid Corp Diffusion transfer product with microcapsules containing glycerin-water solutions
US3275437A (en) * 1963-01-24 1966-09-27 Du Pont Image transfer process and elements therefor
US3914125A (en) * 1964-09-21 1975-10-21 Minnesota Mining & Mfg Diffusion transfer element and method of using same
US4009034A (en) * 1973-07-09 1977-02-22 Xerox Corporation Dry film processing
US4271254A (en) * 1977-10-28 1981-06-02 Ciba-Geigy Ag Process for producing photographic images
US5270145A (en) * 1991-12-06 1993-12-14 Eastman Kodak Company Heat image separation system

Also Published As

Publication number Publication date
DE1004043B (de) 1957-03-07
BE544850A (en))
FR1140789A (fr) 1957-08-13
GB801053A (en) 1958-09-03
CH341389A (de) 1959-09-30

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