US3015562A - Receiving sheet for use in photographic silver transfer process - Google Patents

Receiving sheet for use in photographic silver transfer process Download PDF

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Publication number
US3015562A
US3015562A US733505A US73350558A US3015562A US 3015562 A US3015562 A US 3015562A US 733505 A US733505 A US 733505A US 73350558 A US73350558 A US 73350558A US 3015562 A US3015562 A US 3015562A
Authority
US
United States
Prior art keywords
silver halide
transfer process
image
silver
maleic anhydride
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
US733505A
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English (en)
Inventor
Jr Clifford E Herrick
Floyd J Lafreniere
Straw Douglas
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
General Aniline and Film Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to BE578365D priority Critical patent/BE578365A/xx
Priority to DENDAT1073306D priority patent/DE1073306B/de
Application filed by General Aniline and Film Corp filed Critical General Aniline and Film Corp
Priority to US733505A priority patent/US3015562A/en
Priority to GB14146/59A priority patent/GB856792A/en
Application granted granted Critical
Publication of US3015562A publication Critical patent/US3015562A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G03C8/24—Photosensitive materials characterised by the image-receiving section
    • G03C8/26—Image-receiving layers
    • G03C8/28—Image-receiving layers containing development nuclei or compounds forming such nuclei

Definitions

  • This invention relates to the reproduction of photographic images wherein a silver halide image is transferred imagewise to a receiving sheet for development and particularly to the constitution of such a receiving sheet.
  • the exposed negative material is then treated with a developer composition containing a silver halide solvent and a silver halide developing agent after which the wet, exposed negative material is contacted with a receiving material comprising a piece of paper or foil containing a fogging agent and silver halide solvents.
  • the devolper composition causes the development of the negative latent image in the negative paper; the silver halide solvents in said developer composition react with the unexposed silver halide to form soluble silver complexes which are transferred by diffusion to the receiving material and are there acted upon by the fogging agent therein, whereupon said silver halide complexes are transformed to metallic silver or silver compounds of high optical density.
  • the receiving materials made in accordance with the above US. patent are prepared by coating gelatin from a water solution onto a base. This use of water, as the solvent, leads to problems such as long drying periods at fairly high temperatures and the tackiness so prevalent in such receiving materials is most likely due to its gelatin layer.
  • a plastic foil base such as that from cellulose acetate, polystyrene, or the like, is coated with a solution comprising organic solvents together with a copolymer of maleic anhydride and an alkyl vinyl ether, a normally hydrophobic polymer such as cellulose acetate, vinyl acetate, or the like, a silver halide developing agent such as hydroquinone or paminophenol, a silver halide fogging agent such as Z-hydroxyethylallylthiourea, a water soluble silver salt such as silver nitrate, silver acetate, silver citrate, or the like, which, quite likely, aid in the nucleation needed to form dense images.
  • a solution comprising organic solvents together with a copolymer of maleic anhydride and an alkyl vinyl ether, a normally hydrophobic polymer such as cellulose acetate, vinyl acetate, or the like
  • a silver halide developing agent such as hydroquinone or paminophenol
  • traces of an acid corresponding to the anion of the H 0 soluble silver salt are included in our coating solution such as nitric, acetic, citric acids, or the like.
  • the function of the acid is to prevent the silver ion from being reduced by the developing agent before the coated foil has been dried.
  • the polymer mixture used in coating the foil base is normally hydrophobic and, as such, Will not be evenly Wet with the aqueous developing solution used in processing.
  • hydrophobic coatings when treated with certain hydrolytic agents, i.e., a moist nitrogen containing base, are transformed into hydrophilic films and, in this connection, reference is made to US. Patent 2,756,163 to Herrick and Amon.
  • the foil coating readily accepts the developer compositions used after exposure.
  • the surface hydrolysis of the alkyl vinyl ethermaleic anhydride copolymer coating With a water soluble nitrogenous base also neutralizes any mineral acid present.
  • the foil base coated as above may also be coated on the back side with a solvent solution containing the alkyl vinyl ether-maleic anhydride copolymer and the hydrophobic polymer.
  • alkyl vinyl ether-maleic anhydride copolymers contemplated for use are those described, for example, in US. Patent 2,772,972 and in US. application Serial No. 669,942, filed July 5, 1957, entitled Positive Working and Photomechanical Printing Plates.
  • Such copolymers include those from maleic anhydride, on the one hand,
  • the hydrophobic resin may be cellulose propionate, cellulose butyrate, mixed esters such as cellulose acetate propionate, cellulose acetate butyrate, polyvinyl acetals such as polyvinyl butyral, polymethyl acrylate, polymethylrnethacrylate, and the like.
  • Alternates of the silver halide fogging agent may be employed and are described in US. Patent 2,755,185 and include N-allyl-4-morpholinethiocarbamate, 1-allyl-3- ethyl-Z-thiourea, 1-benzyl-3- 8-hydroxyethyl-2-thiourea, and the like.
  • our new transfer foil produces, in a surprisingly short time, high contrast positive copies of originals with completely haze-free backgrounds free from-yellow discoloration.
  • the moist foil is completely tack free and dries in a few seconds to a copy very suitable for use in producing further reproductions by, for instance, the diazotype copying process or for use as a master for producing printing plates in a photomechamcal repro-
  • the use of the moist organic solvent system from which our transfer material is coated material ly speeds up coating operation with a subsequent saving in cost.
  • our new receiving material possesses all of the properties and uses of the receiving material of the prior art.
  • the photographic images formed on our receiving material may be given any of the subsequent treatments employed in photography such as intensification, reduction, toning, color development, build up of color images by silver bleaching, and the like.
  • Example I Solution A is made by dissolving 50 g. of polyvinyl methyl ether-maleic anhydride (PVM/MA) with a specific viscosity in 2-butanone at 20 C. of 1.0-1.5, and 25 g. of low viscosity cellulose acetate containing 56% combined acetic acid in a mixture of acetone (3000 ml.) and methyl cellosolve acetate (250 ml).
  • PVM/MA polyvinyl methyl ether-maleic anhydride
  • Solution B contains methanol (1750 ml.), nitric acid (1.75 ml.), hydroquinone (5.0 g.) and 2-hydroxyethylallylthiourea (2.5 g.). To this is added silver nitrate (2.5 g.) dissolved in 5.0 ml. of water.
  • Solution B is added to solution A and the resulting mixture is applied by reverse roll bead coating to give a concentration of about 5 ml. per sq. ft. to a cellulose triacetate film base. 7
  • the foil After drying, the foil is overcoated with a solution of monoet-hanolamine (10% in water) using the reverse roll bead methodat a rate of 5.5 feet per minute and kept wet for about 1 minute before entering a drying chamber.
  • the back side of the foil is now coated by reverse roll head with a solution formulated as solution A but containing methanol (1750 ml.) in addition. This too is overcoated with 10% monoethanolamine as described above.
  • a piece of silver halide negative paper is exposed reflex-wise in a light box using an opaque original.
  • the negative paper and receiving foil described above are passed through a developing device.
  • the exposed negative and receiving foil are pressed face to' face in the presence of a developer solution containing a silv'er halide developing agent and a fixer such as hypo.
  • a few seconds after emerging from the developing device image transfer from the negative to the receiving material is complete and the two sheets are peeled apart.
  • the receiving foil only slightly damp, contains a completely clear black and white positive of the opaque original. 7
  • a developing composition suitable for use in the above developing device is as follows:
  • Example 11 4 A receiving .foil was prepared according to Example '1' except that the low viscosity cellulose acetate used therein for solution A was replaced by a vinyl acetate resin.
  • Example Ill particular vinyl' acetate employedhad an intrinsic vis--' 4
  • Example IV Using polyethyl vinyl ether-maleic anhydride in lieu of PVM/ MA, the procedure in this example was carried out as given in Example I.
  • Example V Example VI Using 25.0 g. of a low viscosity, low hydroxyl polyvinyl butyral having a viscosity of 23 cps. (5% in ethanol) in lieu of the cellulose acetate, a cellulose acetate receiving foil was prepared, exposed and developed as in Example I. A clear black and white positive image of the opaque copy material was obtained.
  • Example VII The procedure of Example I was carried out using polybutyl vinyl ether-maleic anhydride in lieu of PVM/ MA. The results were parallel to those obtained in Example 1.
  • Example VIII The procedure of Example I was carried out using polyvinyl isobutyl ether-maleic anhydride in lieu of 'PVM/MA. The results were parallel to those obtained in Example I.
  • Example IX The procedure of Example I was carried out using poly-2-methoxyethyl vinyl ether-maleic anhydride in lieu of 'PVM/ MA. The results were parallel to those obtained v in Example I.
  • a receiving material for use in the photographic difiusion-transfer process comprising a support having thereon a water receptive layer comprising an alkali treated mixture of a polyalkyl vinyl ether-maleic anhydride co-polymer and a hydrophobic resin compatible therewith, a silver halide developing agent, a fogging agent capable of transforming a soluble silver halide image into an image of high optical opacity and a water soluble silver salt.
  • polyalkyl vinyl ether-maleic anhydride co-polymer is polyvinyl methyl ether-maleic anhydride co-polymer.
  • the fogging agent is a thiourea derivative, one nitrogen atom of which is joined through a methylene group to a grouping of carbon atoms containing a :C radical directly linked to said methylene group, and the other nitrogen atom of which is'strongly basic by virtue of a chemical structure selected from the class consisting of those in which the nitrogen atom is substituted by an aliphatic radical and those in which the nitrogen atom forms part of a saturated heterocyclic ring.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
US733505A 1958-05-07 1958-05-07 Receiving sheet for use in photographic silver transfer process Expired - Lifetime US3015562A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE578365D BE578365A (en(2012)) 1958-05-07
DENDAT1073306D DE1073306B (de) 1958-05-07 Bildempfangsmaterial zur Verwendung im photographischen Silbersalzdiffusions-Ubertragungsverfahren und Verfahren zu dessen Herstellung
US733505A US3015562A (en) 1958-05-07 1958-05-07 Receiving sheet for use in photographic silver transfer process
GB14146/59A GB856792A (en) 1958-05-07 1959-04-24 Receiving sheet for use in photographic silver transfer process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US733505A US3015562A (en) 1958-05-07 1958-05-07 Receiving sheet for use in photographic silver transfer process

Publications (1)

Publication Number Publication Date
US3015562A true US3015562A (en) 1962-01-02

Family

ID=24947891

Family Applications (1)

Application Number Title Priority Date Filing Date
US733505A Expired - Lifetime US3015562A (en) 1958-05-07 1958-05-07 Receiving sheet for use in photographic silver transfer process

Country Status (4)

Country Link
US (1) US3015562A (en(2012))
BE (1) BE578365A (en(2012))
DE (1) DE1073306B (en(2012))
GB (1) GB856792A (en(2012))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257205A (en) * 1960-10-12 1966-06-21 Gevaert Photo Prod Nv Method for heat development
US3630734A (en) * 1969-03-12 1971-12-28 Eastman Kodak Co Photographic diffusion transfer product and process
FR2130719A1 (en(2012)) * 1971-03-26 1972-11-03 Fuji Photo Film Co Ltd
FR2184794A1 (en(2012)) * 1972-05-15 1973-12-28 Fuji Photo Film Co Ltd
US4038077A (en) * 1974-04-04 1977-07-26 Polaroid Corporation Process comprising diffusion transfer silver image removal

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL259197A (en(2012)) * 1960-12-17
BE635438A (en(2012)) * 1962-07-28
US4029849A (en) 1974-11-05 1977-06-14 Eastman Kodak Company Cover sheets with timing layer comprising cellulose acetate and copolymer of maleic anhydride
JP2000509374A (ja) 1996-04-19 2000-07-25 アルファ セラピュティック コーポレイション 凍結乾燥した血液タンパク質のウイルス不活性化方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704721A (en) * 1954-04-22 1955-03-22 Polaroid Corp Photographic diffusion transfer reversal processes
US2751300A (en) * 1954-07-15 1956-06-19 Eastman Kodak Co Photographic solvent transfer reproduction process
US2756163A (en) * 1952-01-04 1956-07-24 Gen Aniline & Film Corp Resinous layers having a selected degree of water sensitivity and method of making same
US2882151A (en) * 1955-10-31 1959-04-14 Eastman Kodak Co Photographic roll film transfer process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756163A (en) * 1952-01-04 1956-07-24 Gen Aniline & Film Corp Resinous layers having a selected degree of water sensitivity and method of making same
US2704721A (en) * 1954-04-22 1955-03-22 Polaroid Corp Photographic diffusion transfer reversal processes
US2751300A (en) * 1954-07-15 1956-06-19 Eastman Kodak Co Photographic solvent transfer reproduction process
US2882151A (en) * 1955-10-31 1959-04-14 Eastman Kodak Co Photographic roll film transfer process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257205A (en) * 1960-10-12 1966-06-21 Gevaert Photo Prod Nv Method for heat development
US3630734A (en) * 1969-03-12 1971-12-28 Eastman Kodak Co Photographic diffusion transfer product and process
FR2130719A1 (en(2012)) * 1971-03-26 1972-11-03 Fuji Photo Film Co Ltd
FR2184794A1 (en(2012)) * 1972-05-15 1973-12-28 Fuji Photo Film Co Ltd
US4038077A (en) * 1974-04-04 1977-07-26 Polaroid Corporation Process comprising diffusion transfer silver image removal

Also Published As

Publication number Publication date
DE1073306B (de) 1960-01-14
GB856792A (en) 1960-12-21
BE578365A (en(2012))

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