Identified Synthetic Polymeric Binder Contained In Nonradiation Sensitive Processing Composition Permeable Layer Other Than An Image Receiving Or Neutralizating Layer Patents (Class 430/215)
  • Patent number: 4619891
    Abstract: A photosensitive material having a widened temperature lattitude. The photosensitive material is described, comprising a support having thereon at least one silver halide emulsion layer associated with a dye-providing compound capable of forming an imagewise mobile dye as the result of exposure and development, wherein a hydroquinone derivative and a water-insoluble but organic solvent-soluble homopolymer or copolymer having a recurring unit containing a ##STR1## bond in the main chain or side chain are integrated and dispersed as individual particles in a hydrophilic colloid of the silver halide emulsion layer or layers or the dye providing compound containing layer or layers.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: October 28, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Osamu Takahashi
  • Patent number: 4605608
    Abstract: An image-receiving element for use in a diffusion transfer process comprising a transparent support carrying an image-receiving layer and a hydrogel comprising a hydrophilic polymer layer cross-linked by ionizing radiation, said polymer layer containing aqueous alkaline photographic processing composition.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: August 12, 1986
    Assignee: Polaroid Corporation
    Inventor: Julian G. Bullitt
  • Patent number: 4601976
    Abstract: A multilayer color photographic light-sensitive material containing no image-receiving layer is described, comprising a support, an internal latent image type direct reversal silver halide emulsion layer combined with a dye-providing substance, and a void layer between the support and the layer containing the dye-providing substance closest to the support.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: July 22, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yukio Karino
  • Patent number: 4584263
    Abstract: A photographic light-sensitive material is described, comprising a support having thereon at least one combination of a silver halide photographic emulsion layer and associated therewith a dye-providing compound capable of imagewise forming a mobile dye as a result of imagewise light exposure and photographic development, said silver halide photographic emulsion layer or a layer containing said dye-providing compound having dispersed, in a hydrophilic colloid, a water-insoluble and organic solvent-soluble homopolymer or copolymer having as the main chain or a side chain thereof a repeating unit including a ##STR1## bond and a redox compound represented by formula (I) as combined paticles; ##STR2## wherein R represents a hydrogen atom; a substituted or unsubstituted alkyl group, aryl group, acylamino group, alkoxy group, aryloxy group, alkylthio group, arylthio group, carbamoyl group, acyl group, alkoxycarbonyl group, aryloxycarbonyl group, sulfamoyl group, alkylsulfonyl group, or arylsulfonyl group; a halogen
    Type: Grant
    Filed: August 8, 1985
    Date of Patent: April 22, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Osamu Takahashi
  • Patent number: 4575481
    Abstract: A photographic light-sensitive material for a color diffusion transfer process is described, comprising a support having provided thereon (1) at least two silver halide emulsion layers which are in combination with dye-releasing redox compounds, and (2) an intermediate layer between said silver halide emulsion layers; the intermediate layer comprises a hydrophilic colloid having dispersed therein two or more different kinds of particles, with one or more kinds of said particles containing a scavenger for an oxidized product of a developing agent. The material has an improved processing temperature latitude.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: March 11, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Katsumi Makino
  • Patent number: 4551410
    Abstract: In a color diffusion transfer photographic element, a novel neutralization system for reducing the pH of an alkaline processing solution comprises at least two steps wherein the first step pH of the processing solution is reduced to a range in which development and dye release reactions are substantially discontinued but in which diffusion of dyes for forming transfer images continues, and in the second step pH is further reduced and allows to reduce at a neutralization rate lower than the rate in the first step to a final pH of which the transfer image formed is stable upon storage for a long period.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: November 5, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideki Tomiyama, Masaki Satake
  • Patent number: 4548887
    Abstract: Colored dye diffusion images are produced using a recording material containing, on a layer support (layer element 1), a first dye absorbent layer (layer element 2), a light-sensitive element containing silver halide emulsion layers and color-providing compounds (layer element 3) and optionally a second dye absorbent layer (layer element 4), in that order. An imagewise distribution of diffusible dyes is produced in the light-sensitive element in the course of development and transferred to the first dye absorbent layer.The light-sensitive element is then decomposed by a treatment which decomposes its layers, e.g. by means of a proteolytic enzyme, but leaves the first dye absorbent layer intact. The second dye absorbent layer optionally present, which has a lower mordanting capacity than the first dye absorbent layer and serves to prevent contamination of the developer bath with diffusible dyes, is also decomposed.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: October 22, 1985
    Assignee: AGFA-Gevaert A.G.
    Inventors: Gunter Helling, Wolfgang Himmelmann
  • Patent number: 4547451
    Abstract: Photographic diffusion transfer film units including polymeric diffusion control layers are disclosed. The diffusion control layers comprise polymers which are hydrolyzable in an alkaline medium so as to convert a layer comprising one or more of the polymers from a condition of impermeability to alkali or materials soluble in or solubilized by an aqueous alkaline processing composition to a condition of substantial permeability thereto.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: October 15, 1985
    Assignee: Polaroid Corporation, Patent Dept.
    Inventors: Stanley J. Jasne, William C. Schwarzel, Charles I. Sullivan, Lloyd D. Taylor
  • Patent number: 4546062
    Abstract: Polymeric optical filter agents and products and processes using same are disclosed. The polymeric optical filter agents are pH-sensitive materials comprising a polymeric backbone having a plurality of pendant moieties of the formula (I). ##STR1## wherein X is ##STR2## and R is alkyl, aryl, alkaryl or aralkyl; A is hydrogen, alkyl or the radical ##STR3## where each of Y.sup.1, Y.sup.2 and Y.sup.3 is hydrogen or an electron-withdrawing group; and each Z.sup.1, Z.sup.2 and Z.sup.3 is hydrogen or an electron-withdrawing group; with the proviso that, when each of Z.sup.1, Z.sup.2 and Z.sup.3 is hydrogen, said A is a radical ##STR4## wherein at least one of said Y.sup.1, Y.sup.2 and Y.sup.3 groups comprises an electron-withdrawing group. These agents upon contact with alkali are converted from a substantially non-light absorbing form to a highly colored light-absorbing form useful in photographic products.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: October 8, 1985
    Assignee: Polaroid Corporation
    Inventors: Irena Y. Bronstein-Bonte, Edward P. Lindholm
  • Patent number: 4546159
    Abstract: Novel polymers comprising recurring units capable of undergoing .beta.-elimination in an alkaline environment are disclosed for use in diffusion control layers in diffusion transfer film units.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: October 8, 1985
    Assignee: Polaroid Corporation
    Inventor: Lloyd D. Taylor
  • Patent number: 4529683
    Abstract: Photographic assemblages and processes are described wherein a stripping layer is employed to enable an image-receiving layer to be separated from the rest of the assemblage after processing. Each side of the stripping layer has a hydrophilic layer immediately adjacent thereto, only one of which contains a surfactant-like material having a hydrocarbon fatty tail of at least eight carbon atoms which is remote from a polar group, the material being present in an amount sufficient to enable a clean separation between the image-receiving layer and the portion of the assemblage containing the silver halide emulsion layer.Transparencies or prints which are less bulky and free from surface defects at the stripping layer interface can thereby be obtained from integral assemblages.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: July 16, 1985
    Assignee: Eastman Kodak Company
    Inventor: John F. Bishop
  • Patent number: 4511643
    Abstract: A color diffusion transfer photographic element is disclosed. The element provides a transferred dye image in a mordant layer and includes a compound having recurrent units represented by the general formula (I): ##STR1## the substituents within the general formula (I) are defined within the specification. By utilizing the compound the images produced having improved preservability having specific improvements with respect to the elimination of yellow stains which are formed in white areas of the images after storage for a long period of time. Furthermore, the images formed do not deteriorate at high temperatures and the use of the compound does not decrease the D.sub.max in print images.
    Type: Grant
    Filed: September 22, 1983
    Date of Patent: April 16, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Ichizo Toya
  • Patent number: 4506002
    Abstract: A diffusion transfer photographic element composed of a photosensitive sheet, a cover sheet, and a processing composition contained in a rupturable container in such a manner that the processing composition is spread between both sheets after exposing the photosensitive sheet is disclosed. The whiteness of highlights of images obtained is improved by incorporating a graft carbon black polymer prepared by graft polymerizing a monomer to carbon black in the photographic element, in particular, in the light-shielding layer of the photosensitive sheet.The graft carbon black polymer prepared by graft polymerizing a monomer to carbon black can be uniformly dispersed in an aqueous medium and thus the photographic properties of a diffusion transfer photographic element can be improved using the graft carbon black polymer.
    Type: Grant
    Filed: November 28, 1983
    Date of Patent: March 19, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideki Takaki, Hiroshi Hayashi, Shigetoshi Ono, Hisashi Okamura
  • Patent number: 4506001
    Abstract: A photographic recording material is disclosed. The material is comprised of a transparent support base and a number of layers positioned on that base. A dye ligand or a dye ligand-forming substance is positioned on the base and is associated with a light-sensitive silver halide emulsion. In addition, the material contains a mordant layer, an alkaline processing composition, and a means for releasing the composition throughout the photographic recording material in an integrated manner or as a different system. The mordant layer contains a coordination polymer composed of a ligand represented by a general formula (I) defined within the application and a metal ion. The invention makes it possible to immobilize a metal ion using inexpensive, easily available metal-chelatable ligands.
    Type: Grant
    Filed: April 3, 1984
    Date of Patent: March 19, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Sakaguchi, Hisashi Okamura, Shigeru Nakamura
  • Patent number: 4504569
    Abstract: A polymer comprising polymerized N-alkyl substituted acrylamide and a polymerized crosslinking monomer wherein the polymer has a solubility parameter from about 13 to 16 at 25.degree. C., is useful as a temporary barrier layer between reactants in photographic products. The barrier layer is particularly useful as a process timing layer in color image transfer film units.
    Type: Grant
    Filed: August 26, 1983
    Date of Patent: March 12, 1985
    Assignee: Eastman Kodak Company
    Inventors: Edward P. Abel, Wayne A. Bowman
  • Patent number: 4499164
    Abstract: An optical barrier layer for use in reflection type image carrying media of the type wherein a thin transparent image receiving layer includes an image which is viewed through one side of the image receiving layer with ambient light that is reflected from a light scattering layer located on the other side of the image-receiving layer. The optical barrier layer is a thin, transparent layer located between the image receiving layer and the light scattering layer and operates to minimize nonlinear density effects of multiple internal reflections.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: February 12, 1985
    Assignee: Polaroid Corporation
    Inventor: William T. Plummer
  • Patent number: 4499174
    Abstract: Photographic assemblages and processes are described wherein a stripping layer is employed to enable an image-receiving layer to be separated from the rest of the assemblage after processing. Each side of the stripping layer has a hydrophilic layer immediately adjacent thereto, only one of which contains particulate material substantially insensitive to light and in a volume percentage of about 5 to about 75 percent of the hydrophilic material-particulate material mixture, so that upon separation, substantially all of the stripping layer will remain with the portion of the assemblage having the hydrophilic layer containing the particulate material.Transparencies or prints which are less bulky can thereby be obtained from integral assemblages.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: February 12, 1985
    Assignee: Eastman Kodak Company
    Inventors: John F. Bishop, Thomas O. Braun
  • Patent number: 4480025
    Abstract: A bleach-fix sheet for use in color photographic processes comprises a support having thereon a bleach-fix layer and a water reservoir layer comprising a water-supplying polymer. In a preferred embodiment, the bleach-fix sheet is useful to bleach and fix a retained image in a color image diffusion transfer process.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: October 30, 1984
    Assignee: Eastman Kodak Company
    Inventors: Hao J. Chang, Gerhard Popp, Patrick H. Saturno
  • Patent number: 4468494
    Abstract: Polymeric optical filter agents and photographic products and processes using same are disclosed. The polymeric optical filter agents are pH-sensitive optical filter agents comprising polymeric backbone units having the following hydrazone moiety: ##STR1## where R is a group which can provide a double bond for conjugation with the ##STR2## portion of the moiety to provide light-absorbing capability for the agent at a pH above its pKa, and X represents a substituent of R providing at least one electron-withdrawing group. The polymeric pH-sensitive optical filter agents have a highly colored light-absorbing form at a pH above the pKa and are substantially non-absorbing at a pH below the pKa. The polymeric optical filter agents are useful in photographic film units and processes for the protection of photoexposed photosenstive elements against the occurence of fogging during in-light development.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: August 28, 1984
    Assignee: Polaroid Corporation
    Inventors: Derek H. R. Barton, Irena Y. Bronstein-Bonte, Lloyd D. Taylor
  • Patent number: 4463052
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets are described employing a novel timing layer comprising the following recurring units: ##STR1## wherein R.sup.1 is a straight or branched chain alkyl group of from 1 to about 10 carbon atoms or aralkyl group of from about 7 to about 10 carbon atoms;R.sup.2 is a substituted or unsubstituted aryl group of from 6 to about 12 carbon atoms;R.sup.3 is a straight or branched aliphatic group having from 1 to about 20 carbon atoms or an aromatic group having from about 6 to about 20 carbon atoms, the group being substituted with at least one free carboxylic acid group, free sulfonic acid group, free phosphoric acid group or salt thereof;x is from about 1 to about 30 weight percent; andy+z is from about 99 to about 70 weight percent, the ratio of y:z ranging from about 15:85 to about 70:30.The timing layer has a high activation energy and provides improved processing temperature latitude.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: July 31, 1984
    Assignee: Eastman Kodak Company
    Inventors: David B. Bailey, Edward P. Abel
  • Patent number: 4461824
    Abstract: Polymers comprising recurring units having cyclic .beta.-elimination moieties capable of undergoing .beta.-elimination in an alkaline environment and are disclosed for use in diffusion control layers in diffusion transfer photographic products.
    Type: Grant
    Filed: December 29, 1982
    Date of Patent: July 24, 1984
    Assignee: Polaroid Corporation
    Inventor: Avinash C. Mehta
  • Patent number: 4459346
    Abstract: Photographic assemblages and processes are described wherein a certain stripping agent is employed to enable an image-receiving layer to be separated from the rest of the assemblage after processing. The stripping agent comprises a straight chain alkyl or polyethylene oxide perfluoroalkylated ester or perfluoroalkylated ether, and preferably has the following formula: ##STR1## wherein R.sup.1 is an alkyl or substituted alkyl group having from 1 to about 6 carbon atoms or an aryl or substituted aryl group having from about 6 to about 10 carbon atoms; ##STR2## R.sup.3 is H or R.sup.1 ; n is an integer of from about 4 to about 20; andx and y each independently represents an integer of from about 2 to about 50, andz represents an integer of from 1 to about 50.Less bulky black-and-white or color prints or transparencies can thereby be obtained from integral assemblages. Materials from the discarded layers may also be recycled.
    Type: Grant
    Filed: March 25, 1983
    Date of Patent: July 10, 1984
    Assignee: Eastman Kodak Company
    Inventors: John F. Bishop, William J. Hutchinson, Michael W. Orem
  • Patent number: 4458001
    Abstract: Polymerizable monomeric carbamates are disclosed. Polymers comprising recurring units from such carbamates undergo .beta.-elimination in an alkaline environment and are useful in diffusion control layers in diffusion transfer photographic products.
    Type: Grant
    Filed: December 29, 1982
    Date of Patent: July 3, 1984
    Assignee: Polaroid Corporation
    Inventor: Lloyd D. Taylor
  • Patent number: 4452878
    Abstract: A class of quaternary nitrogen-containing polymeric materials, which upon contact with alkali provide substantial light-absorbing or opacifying properties, is disclosed. The polymeric materials comprise repeating units of the formula: ##STR1## wherein the cyclic quaternary nitrogen-containing moiety is a 2-, 3-, or 4-pyridinium moiety; R.sup.1 and R.sup.2 are independently hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, aralkyl, alkaryl, halo, or R.sup.1 and R.sup.2 together comprise the atoms necessary to complete a six-membered, substituted or unsubstituted benzenoid ring; R.sup.3 is hydrogen or alkyl; X is an anion; and Y is hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, aralkyl, alkaryl or halo.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: June 5, 1984
    Assignee: Polaroid Corporation
    Inventors: Louis Locatell, Jr., Charles M. Zepp
  • Patent number: 4448850
    Abstract: Polymers having excellent adherence to film supports such as cellulose acetate are disclosed. The polymers comprise random recurring units having the structure--A).sub.w, --B).sub.x, --C).sub.y and --D).sub.zwherein;A represents polymerized vinyl acetate;B represents a polymerized acrylate or methacrylate monomer capable of copolymerization with vinyl acetate;C represents a polymerized monomer selected from the group consisting of methacrylic acid, itaconic acid and vinylbenzoic acid;D represents a polymerized cationically charged copolymerizable monomer;w represents from 20 to 85 weight percent;x represents from 5 to 65 weight percent;y represents from 5 to 50 weight percent and;z represents from 0 to 15 weight percent.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: May 15, 1984
    Assignee: Eastman Kodak Company
    Inventors: Donald A. Upson, David J. Steklenski
  • Patent number: 4448874
    Abstract: Photographic assemblages and cover sheets are described employing a timing layer comprising a physical mixture of the following two polymers:(i) a first polymer comprising from about 5 to about 35 percent by weight of recurring units of an ethylenically unsaturated monomer, from about 0 to about 20 percent by weight of recurring units of an ethylenically unsaturated carboxylic acid, and from about 55 to about 85 percent by weight of recurring units of vinylidene chloride; and(ii) a second polymer comprising from about 20 to about 70 percent by weight of recurring units of maleic anhydride and from about 80 to about 30 percent by weight of recurring units of a vinyl ester or an alkene;the second polymer being present at a concentration of from about 2 to about 20 percent by weight of the mixture.
    Type: Grant
    Filed: March 31, 1983
    Date of Patent: May 15, 1984
    Assignee: Eastman Kodak Company
    Inventor: Edward P. Abel
  • Patent number: 4440848
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets are described employing a novel timing layer comprising the following recurring units: ##STR1## wherein R.sup.1 is a straight or branched chain alkyl group of from 1 to about 10 carbon atoms or aralkyl group of from about 7 to about 10 carbon atoms;R.sup.2 is a substituted or unsubstituted aryl group of from 6 to about 12 carbon atoms;R.sup.3 is a straight or branched aliphatic group having from 1 to about 20 carbon atoms or an aromatic group having from about 6 to about 20 carbon atoms, the group being substituted with at least one free carboxylic acid group, free sulfonic acid group, free phosphoric acid group or salt thereof;x is from about 1 to about 30 weight percent; andy+z is from about 99 to about 70 weight percent, the ratio of y:z ranging from about 15:85 to about 70:30.The timing layer has a high activation energy and provides improved processing temperature latitude.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: April 3, 1984
    Assignee: Eastman Kodak Company
    Inventors: David B. Bailey, Edward P. Abel
  • Patent number: 4429032
    Abstract: The adherence of a hydrophilic layer containing a hydrophilic colloid binder upon the surface of a vinyl chloride polymer free of hydrophilic recurring units is improved by exposing the polymer surface to a corona discharge sufficient to satisfy a particular wetting test described in the specification, and colloidal silica is dispersed within the hydrophilic layer in a weight ratio range relative to the binder of 1:5-2:1.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: January 31, 1984
    Assignee: Agfa-Gevaert N.V.
    Inventors: Herman L. Matthe, Lucien J. Van Gossum, Ludovicus M. Mertens
  • Patent number: 4426438
    Abstract: Metal cation loaded cross-linked anionic polymer as described herein is useful in the preparation of an indicator sheet for complex forming organic compounds or in the preparation of dyed or dyable layers in photographic materials, particularly in an image receiving layer when the image dyes are complex-formers.
    Type: Grant
    Filed: January 15, 1981
    Date of Patent: January 17, 1984
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventor: Gunter Helling
  • Patent number: 4424272
    Abstract: Polymeric mordants which are capable of converting to non-mordanting species in an alkaline environment are described. The mordants can be used in photographic elements to temporarily mordant a photographically useful dye material, such as a light-filter or anti-halation dye or a diffusion transfer image dye-providing material, and then release the dye material during processing of the element with an alkaline processing composition.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: January 3, 1984
    Assignee: Polaroid Corporation
    Inventor: Lloyd D. Taylor
  • Patent number: 4407938
    Abstract: A photographic element comprising a support having thereof at least one silver halide emulsion layer and at least one temporary barrier layer, said temporary barrier layer comprising a mixture of a lactone polymer with repetitive units represented by the formula (I): ##STR1## and a vinylidene chloride terpolymer represented by the formula (II): ##STR2## wherein R is a hydrogen atom, an alkyl or an aralkyl group; R.sup.1, R.sup.2 and R.sup.3 each is a hydrogen atom or a methyl group; n.sup.1 is an integer of from 1 to 5, while n.sup.2 is an integer of 1 or 2; A is a monomer unit of a copolymerizable ethylenically unsaturated acid or of the salt thereof, while B is a copolymerizable ethylenically unsaturated monomer unit; x represents from 50 to 99.5% by weight, y represents from 0.5 to 44.5% by weight, and z represents from 0 to 49.5% by weight.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: October 4, 1983
    Assignee: Konishiroku Photo Ind. Co., Ltd.
    Inventors: Noboru Mizukura, Mikio Koyama
  • Patent number: 4401746
    Abstract: This invention relates to diffusion transfer photographic processes and to products useful therein which employ a stripping layer consisting of a mixture of cellulose acetate hydrogen phthalate and a straight chain saturated polyester of adipic acid to facilitate separation of a dyeable stratum from a contiguous gelatin layer, e.g., a gelatino silver halide emulsion layer or a gelatin layer containing an image dye-providing material.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: August 30, 1983
    Assignee: Polaroid Corporation
    Inventor: William J. Pfingston
  • Patent number: 4395477
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets are described employing a single neutralizing-timing layer consisting essentially of a carboxy-ester-lactone polymer having the following recurring units: ##STR1## wherein R is alkyl having from 1 to about 12 carbon atoms or aralkyl having from 7 to about 12 carbon atoms;R.sup.1 and R.sup.2 are each independently hydrogen or methyl;x is about 1 to about 15 mole %; andy is about 85 to about 99 mole %.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: July 26, 1983
    Assignee: Eastman Kodak Company
    Inventor: Edward P. Abel
  • Patent number: 4391895
    Abstract: A diffusion control layer for a diffusion transfer photographic film unit comprising a urethane polymer including recurring backbone units capable of undergoing .beta.-elimination degradation in an alkaline environment.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: July 5, 1983
    Assignee: Polaroid Corporation
    Inventors: William C. Schwarzel, Lloyd D. Taylor
  • Patent number: 4379829
    Abstract: A color photographic material for the dye diffusion transfer process contains a temporary barrier layer that is applied from organic solution and consists of a mixture of(a) 40 to 95% by weight of a copolymer of 40 to 80% by weight of monomer I (vinylidene chloride, dimethyl butadiene or dichlorobutadiene) 18 to 50% by weight of monomer II ((meth)acrylonitrile or alkyl (meth)acrylate) and 2 to 10% by weight of monomer III (olefinically unsaturated copolymerizable mono or dicarboxylic acids, sulfonic acids or phosphonic acids) and(b) 5 to 60% by weight of a homopolymer of alkyl acrylate, hydroxyalkyl acrylate, N-alkyl acrylamide, N-hydroxyalkyl acrylamide vinyl acetate, or polycarbonate or cellulose acetate, or a copolymer of 80 to 99% by weight of alkyl or hydroxyalkyl acrylate and 1 to 20% by weight of a copolymerizable acid.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: April 12, 1983
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Werner Krafft, Gunter Helling, Guunther Matschke, Immo Boie
  • Patent number: 4375506
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and a neutralizing layer for use with negative-working silver halide emulsions and positive-working redox dye-releasers. The outermost timing layer has a negative temperature coefficient and has a development accelerator associated therewith to increase the development of the silver halide emulsion at low temperatures. The timing layer next to the neutralizing layer has a greater penetration time by the alkaline processing composition so that the neutralizing layer is permeated only after silver halide development has been substantially completed. The temperature latitude of the system is thereby increased.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: March 1, 1983
    Assignee: Eastman Kodak Company
    Inventors: Edward P. Abel, Edward Weissberger
  • Patent number: 4374919
    Abstract: A diffusion transfer color photographic element wherein (1) a light-sensitive sheet comprising a support having superposed thereon at least one silver halide emulsion layer having associated therewith a color image providing compound and (2) a cover sheet comprising a support having thereon at least one neutralizing layer and at least one neutralization timing layer are arranged so that they can contact each other with their supports remote the area of contact and which is so designed that a processing composition may be spread in a uniform layer between the light-sensitive sheet (1) and the cover sheet (2), further wherein a protective layer which consists essentially of a hydrophilic colloid is provided as the topmost layer of the light-sensitive sheet (1) and there is provided an ultraviolet absorbant-containing layer for light-sensitive sheet (1) adjacent the protective layer. The element exhibits improved storage stability.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: February 22, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Masaharu Toriuchi
  • Patent number: 4366236
    Abstract: A diffusion transfer color photographic material having an improved interlayer between two silver halide photographic emulsion layers formed on a support. The interlayer contains a mixture of hydroquinone derivatives having solidifying points lower than 100.degree. C. and a water-insoluble organic solvent-soluble homopolymer or copolymer dispersed in a hydrophilic organic colloid.
    Type: Grant
    Filed: March 5, 1981
    Date of Patent: December 28, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Osamu Takahashi
  • Patent number: 4366227
    Abstract: A diffusion transfer film unit comprising a support, a photosensitive silver halide emulsion layer, an image-receiving layer and, intermediate said silver halide emulsion layer and said image-receiving layer, a release layer which comprises a water-soluble polymer and a styrenated acid functional acrylic resin. In a preferred embodiment, the film unit is a silver diffusion transfer film unit.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: December 28, 1982
    Assignee: Polaroid Corporation
    Inventors: Michael Berger, John J. Magenheimer
  • Patent number: 4359517
    Abstract: Image-receiving elements and photographic diffusion transfer products providing diffusion transfer transparency images are described. The image-receiving elements include a transparent support carrying, in sequence, an acid-reacting reagent; a first polymeric timing layer possessing decreasing alkaline solution permeability with increasing temperature; a second timing layer comprising cellulose acetate; and an alkaline solution-permeable and dyeable polymeric image-receiving layer comprising a graft polymer having a polymeric backbone and grafted thereto moieties which provide mordant capability. The utilization in the image-receiving elements of the aforedescribed first and second timing layers permits the provision of elements which can be effectively processed over a range of processing temperatures and which are adapted to the provision of transparencies which exhibit desired images without the distracting or otherwise objectionable image defects associated with reticulation.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: November 16, 1982
    Assignee: Polaroid Corporation
    Inventor: Gerard J. Bourgeois
  • Patent number: 4359518
    Abstract: A stripping sheet adapted for use with a diffusion transfer film unit to remove at least the photosensitive layer from said film unit subsequent to processing is disclosed, as well as methods for using said stripping sheet, wherein said stripping sheet comprises a support, carrying in order, a water-absorbing layer, and a layer capable of conversion from substantial liquid processing composition impermeability to a condition of substantial liquid processing composition permeability.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: November 16, 1982
    Assignee: Polaroid Corporation
    Inventors: Raymond B. Hanselman, Karl J. Schreiber
  • Patent number: 4358524
    Abstract: Photographic elements, diffusion transfer assemblages and processes are described wherein a polymeric vehicle is employed in a metallizable dye image-receiving layer, a layer adjacent thereto or both. The polymeric vehicle comprises a cross-linked polymer derived from recurring units of an acrylamide, a 1-vinyl-2-pyrrolidone or a 2-hydroxyethyl acrylate and a cross-linkable monomer.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: November 9, 1982
    Assignee: Eastman Kodak Company
    Inventors: Richard C. Sutton, David P. Brust, Lewis R. Hamilton
  • Patent number: 4357409
    Abstract: Adhesive compositions are disclosed which are particularly useful as mask adhesives in instant photographic products. These adhesives provide high strength permanent bonds while greatly improving border quality around image areas after imagewise exposure and development. In addition, they can be heat sealed at relatively low sealing temperatures. These adhesive compositions comprise a polymeric acidic component having at least 3 milliequivalents of acid per gram of component, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked photographic developer. The polymeric acidic component comprises certain sulfo-containing polymers.
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: November 2, 1982
    Assignee: Eastman Kodak Company
    Inventor: Wayne A. Bowman
  • Patent number: 4357392
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and a neutralizing layer. The outermost timing layer contains photographic addenda, such as development inhibitors, for substantially terminating development of the silver halide emulsion. The timing layer next to the neutralizing layer has a much longer breakdown time so that it is permeated by the alkaline processing composition only after silver halide development has been substantially terminated.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: November 2, 1982
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. Reed, Patrick H. Saturno, Gerald L. Ducharme
  • Patent number: 4357408
    Abstract: Adhesive compositions are disclosed which are particularly useful as mask adhesives in instant photographic products. These adhesives provide high strength permanent bonds while greatly improving border quality around image areas after imagewise exposure and development. These adhesive compositions comprise a polymeric acidic component having at least 3 milliequivalents of acid per gram of polymer, and a substantially immobile, blocked photographic development restrainer or a substantially immobile, blocked competing photographic developer.
    Type: Grant
    Filed: November 20, 1980
    Date of Patent: November 2, 1982
    Assignee: Eastman Kodak Company
    Inventors: Robert R. Rose, Carl H. Eldredge
  • Patent number: 4356249
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and two neutralizing layers for use with negative-working silver halide emulsions and positive-working redox dye-releasers. The outermost timing layer has a negative temperature coefficient while the innermost timing layer has either a positive or negative temperature coefficient and has a penetration time by alkaline processing composition that is greater than the penetration time of the outermost timing layer. An auxiliary neutralizing layer is located between the two timing layers. Dye release is restricted more at low temperatures than at high temperatures so that the temperature latitude of the system is thereby increased.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: October 26, 1982
    Assignee: Eastman Kodak Company
    Inventors: Edward P. Abel, Edward Weissberger
  • Patent number: 4353973
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets are described employing a neutralizing layer comprising about 75 to about 150 meq. of acid/m.sup.2 of element for neutralizing an alkaline processing composition. The neutralizing layer, timing layer or layer adjacent thereto also contains about 1 to about 10 meq./m.sup.2 of oxalic acid, or an acid salt thereof, to minimize sensitometric changes that occur with keeping.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: October 12, 1982
    Assignee: Eastman Kodak Company
    Inventor: Richard W. Wheeler
  • Patent number: 4352871
    Abstract: Photosensitive elements for color diffusion transfer film units comprising a support layer, at least two selectively-sensitized silver halide layers having image-dye forming materials associated therewith, and a novel interlayer, separating the silver halide layers, comprising a polymeric hydroxamic acid polyvalent metal salt which serves as a barrier to the migration of solubilized image-dye forming material until it is rendered permeable to the image-dye forming material subsequent to contact with a sequestering agent for the polyvalent metal of the salt barrier.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: October 5, 1982
    Assignee: Polaroid Corporation
    Inventors: Lloyd D. Taylor, William C. Schwarzel
  • Patent number: 4347301
    Abstract: The present invention is directed to photosensitive elements and to diffusion transfer film units employing said elements wherein said photosensitive element includes a plurality of essential layers, including a first photosensitive silver halide layer and a second photosensitive silver halide layer, said first and second silver halide layers being sensitized to substantially the same spectral absorption range; a spacer layer intermediate and contiguous to said first and second silver halide layers, said spacer layer consisting essentially of inert particles which are substantially non-swelling in alkali, and substantially non-film forming; wherein said inert particles are equal to or less than the average diameter of the silver halide grains in said first and second silver halide layers and wherein said silver halide grains are 2.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: August 31, 1982
    Assignee: Polaroid Corporation
    Inventor: Peter O. Kliem
  • Patent number: 4346160
    Abstract: Two-sheet diffusion transfer assemblages, photographic elements and dye image-receiving elements are described wherein an overcoat layer is present on the photographic element or the dye image-receiving element superposed thereon. The overcoat layer comprises either silica or an ionic polyester in a hydrophilic colloid which prevents spontaneous delamination during the lamination period, yet permits satisfactory peel-apart afterwards.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: August 24, 1982
    Assignee: Eastman Kodak Company
    Inventor: John F. Bishop