Having Either A Nonradiation Sensitive Scavenger Layer, Or An Ingredient For Forming Scavenger Or Barrier Layer, Or An Identified Developing Agent Scavenger Patents (Class 430/214)
  • Patent number: 5051335
    Abstract: A novel heat developable light-sensitive material is disclosed, comprising light-sensitive silver halide emulsion layers on a paper support, wherein at least one subbing layer capable of inhibiting fog is provided interposed between the undermost layer among said light-sensitive silver halide emulsion layers and said paper support. In a preferred embodiment, the subbing layer comprises a binder and at least one material capable of inhibiting fog.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: September 24, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Masatoshi Kato
  • Patent number: 5047315
    Abstract: A silver halide color photographic material comprising a support having provided thereon a photographic layer containing:a) at least one compound capable of chemically binding with an aromatic amine developing agent or its oxidation product, which remains after color development processing, to produce a chemically inert and substantially colorless compound andb) at least one of the compounds presented by the following Formulae (I), (II) or (III): ##STR1## wherein X and X' each represents a divalent to hexavalent polyvalent group; n and m each represents an integer of 2 to 6; R represents an aliphatic group; R' represents an aliphatic group or an aromatic group, provided that R or R' existing in the same molecule may be the same or different from each other; R.sub.1, R.sub.2, R.sub.3 and R.sub.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: September 10, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Osamu Takahashi
  • Patent number: 5026634
    Abstract: A color light sensitive material which provides a positive dye image having high density, good color reproducibility and which exhibits excellent preservability before use. The material comprises a support having provided thereon a light-sensitive silver halide, a binder, a reducible dye donating compound, and at least one reducing agent selected from the group consisting of a compound represented by formula (IA) and a compound represented by formula (IB): ##STR1## wherein the substituents have the meanings indicated in the specification.
    Type: Grant
    Filed: July 20, 1989
    Date of Patent: June 25, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Michio Ono, Hiroyuki Hirai, Nobutaka Ohki, Kouichi Hanaki, Koki Nakamura
  • Patent number: 4983506
    Abstract: A silver halide photographic material is described, containing at least one polymer, which functions as both a color fogging preventing agent and a color mixing preventing agent, obtained by polycondensation of at least one compound represented by formula (I) and at least one compound represented by formula (II): ##STR1## wherein G represents hydroxyl group, a group capable of forming hydroxyl group by alkali hydrolysis, a carbonamido group or a sulfonamido group;n represents an integer of 1 or more, provided that when n is 2 or more, plural G's may be same or different;R.sup.1 and R.sup.2 each independently represents hydrogen atom or a substituent; andR.sup.3 and R.sup.4 each independently represents hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a heterocyclic group, an acyl group, a carboxyl group, or a formyl group,in the presence of an acid or alkali catalyst.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: January 8, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigetoshi Ono, Hirokazu Kondo, Yoshisada Nakamura
  • Patent number: 4978606
    Abstract: A silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, at least one layer of the material containing the combination of a water-insoluble homopolymer or copolymer which has an amido bond in the repeating unit and at least one compound represented by formula (I): ##STR1## wherein X represents an alkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an amido group or a sulfonamido group; R.sup.1 and R.sup.2, which may be the same or different, each represents an alkyl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an amido group, a sulfonamido group, hydrogen, a halogen atom, a sulfo group, a carboxyl group, a carbamoyl group, a sulfamoyl group, an acyl group or a sulfonyl group, provided that R.sup.1 and R.sup.2 may be linked to form a carbocyclic ring; and Y represents a hydroxyl group or a sulfonamido group.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: December 18, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobutaka Ohki, Keiji Mihayashi, Shigeru Nakamura, Hiroshi Fukuzawa
  • Patent number: 4968598
    Abstract: A heat developable color light-sensitive material comprising a support having thereon at least light-sensitive silver halide, a reducing agent and/or a reducing agent precursor, a binder, a dye providing substance which releases a mobile dye in counter-correspondence to a latent image formed by imagewise exposure, and an oxidizable compound which has a single bond cleaved by reduction and which does not release any substance having a photographic effect.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: November 6, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koki Nakamura, Hiroyuki Hirai
  • Patent number: 4957848
    Abstract: A heat-developable color light-sensitive material is disclosed, comprising a support having thereon at least one layer containing a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A), and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a nondiffusible form, said compound of formula (A) being represented by ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom, provided that at least one of R.sub.1, R.sub.2, and R.sub.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: September 18, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Koichi Koyama, Keizo Koya
  • Patent number: 4950584
    Abstract: The method of processing a heat-processable color photosensitive material is disclosed. The photosensitive material comprises a support, provided thereon, a photosensitive layer containing a photosensitive silver halide, a dye-donor, a reducing agent and a binder, and a non-photosensitive layer containing at least a binder, wherein a coupler capable of coupling with an oxydized product of the reducing agent to form a substantially colorless product is contained in at least one of the photosensitive layer and the non-photosensitive layer, and is represented by Formula (1); ##STR1## wherein R represents one selected from the group consisting of an alkyl group and an aryl group; and X represents a group of the atoms necessary to form a 5- or 6-membered heterocyclic ring containing at least one selected from the group consisting of nitrogen, sulfur and oxygen.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: August 21, 1990
    Assignee: Konica Corporation
    Inventors: Tawara Komamura, Masaru Tsuchiya, Ken Okauchi
  • Patent number: 4927744
    Abstract: Photographic elements having an oxidized developer scavenger that is a solid particle dispersion of a hydroquinone derivative. The solid particle dispersion of the oxidized developer scavenger offers improved stability to oxidation compared to conventional dispersions of hydroquinone derivatives.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: May 22, 1990
    Assignee: Eastman Kodak Company
    Inventors: Richard P. Henzel, Paul L. Zengerle
  • Patent number: 4914002
    Abstract: A silver halide negative photographic material comprising a support having thereon at least one silver halide emulsion layer, at least one hydrophilic colloidal layer thereof containing (1) a hydrazine derivative, (2) a compound substantially having no absorption maximum in the visible light region represented by formula (I): ##STR1## wherein Z.sup.11, Z.sup.12, R.sup.11, R.sup.12 X and n are as defined in the specification, and (3) at least one compound represented by formula (II) or (III): ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and Q are as defined in the specification; and ##STR3## wherein R.sub.21, R.sub.22, R.sub.23, and R.sub.24, are as defined in the specification. The photographic material can be processed with a stable developer to provide an ultra-high contrast image without reduction in sensitivity, gamma or maximum density or the appearance of black pepper. The photographic material is excellent in pressure properties and anti-blocking properties.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: April 3, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuaki Inoue, Hisashi Okada, Shigeo Hirano, Kimitaka Kameoka, Tetsuo Yoshida, Morio Yagihara
  • Patent number: 4820608
    Abstract: The present invention provides a dye diffusion transfer imaging process comprising transferring image-wise by diffusion an acid dye to an image-receiving layer incorporating a non-polymeric phosphonium mordanting agent and a copolymer latex comprising free weak acid groups as a stabilizer for the mordanting agent, wherein the image-wise transfer of said acid dye is performed in the presence of a heterocyclic compound corresponding to one of the following general formulae I, II, and III: ##STR1## wherein: Y represents the non-metallic atoms needed to complete a saturated or unsaturated 5- or 6-membered heterocyclic nucleus, which may carry a fused-on aromatic ring system, and M represents hydrogen, an alkali metal atom, a quaternary ammonium group, or a negative charge forming an inner salt with a quaternized nitrogen atom of the heterocyclic compound. The invention also provides an image receptor element for dye diffusion transfer imaging processes comprising a support and such image-receiving layer.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: April 11, 1989
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Daniel A. Claeys, Daniel M. Timmerman, Antonius A. Rutges, Eddy A. Michiels, Luc J. Vanmaele, Piet Kok
  • Patent number: 4791048
    Abstract: A color image is formed by subjecting a silver halide photosensitive material comprising at least a photosensitive silver halide, a two equivalent coupler, a binder, and a substantially water-insoluble basic metal compound on a support, to development with a processing solution comprising a complexing compound capable of complexing reaction with the metal in ionic form of said substantially water-insoluble basic metal compound in the presence of water to release a base.
    Type: Grant
    Filed: February 19, 1987
    Date of Patent: December 13, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Hirai, Yoshiharu Yabuki, Haruhiko Iwano
  • Patent number: 4782004
    Abstract: A heat-developable photosensitive material comprising at lesat (1) a photosensitive silver halide, (2) a binder, (3) a dye-providing substance, and (4) a specific reducing agent other than commonly used reducing agents for silver halide on a support can be heat developed to produce images having a high density and less fog and has improved shelf stability.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: November 1, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masashi Takeuchi, Kozo Sato, Hiroyuki Hirai
  • Patent number: 4766056
    Abstract: A heat-developable color light-sensitive material is disclosed, comprising a support having thereon at least one layer containing a light-sensitive silver halide, a binder, a compound containing a color moiety represented by formula (A), and a compound or a precursor thereof which reacts with an oxidized compound formed from the compound of formula (A), thereby converting the oxidized compound into a non-diffusible form, said compound of formula (A) being represented by ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an acylamino group, an alkylthio group, an arylthio group, or a halogen atom, provided that at least one of R.sub.1, R.sub.2, and R.sub.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: August 23, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Koichi Koyama, Keizo Koya
  • Patent number: 4758498
    Abstract: A processing composition for use in color diffusion transfer photograph is disclosed, comprising a compound represented formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each represents an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, or R.sup.1 and R.sup.2 together form a ring; M represents a hydrogen atom, an alkali metal, an alkaline earth metal, or ammonium; and Y represents a sulfonyl or carbonyl group.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: July 19, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toru Harada, Shigeru Nakamura, Hiroshi Tanabe
  • Patent number: 4740448
    Abstract: Diffusion transfer color films and processes are disclosed which use dye developer chemistry to form at least one color record and which use image dye-releasing thiazolidine chemistry to form at least one of the other color records.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: April 26, 1988
    Assignee: Polaroid Corporation
    Inventor: Peter O. Kliem
  • Patent number: 4713298
    Abstract: A printed circuit board having improved adhesion between solder mask and metal includes a primer film on the metal deposited from an aqueous solution which includes 0.01 to 10% by weight of a carboxyl-containing polymer or copolymer.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: December 15, 1987
    Assignee: M&T Chemicals Inc.
    Inventors: Paul L. K. Hung, Richard J. Radigan, David S. Rosen
  • Patent number: 4690884
    Abstract: A scavenger-spreader element adapted for use with a photosensitive element to form a negative image is disclosed as well as methods for processing said photosensitive element to produce the negative image. The scavenger-spreader element comprises a support carrying a hydrophilic layer, a cross-linking agent for the polymeric thickener of the photographic processing composition, a barrier layer to control diffusion of said cross-linking agent and a layer adapted to possess substantial adhesion for the cross-linked polymeric thickening agent.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: September 1, 1987
    Assignee: Polaroid Corporation
    Inventors: Frank E. DeBruyn, Jr., Lucretia J. Weed
  • Patent number: 4659651
    Abstract: A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer having associated therewith at least one blocked photographic reagent represented by formula (I) or (II); ##STR1## wherein, A represents a moiety of a photographic reagent or a moiety of a precursor of a photographic reagent bonded to the ring containing Z through a hetero atom; Y.sup.1, and Y.sup.2 and Y.sup.3 each represents a hydrogen atom or a substituent, or Y.sup.1 and Y.sup.3 in formula (I) together form a ring; Z represents an atomic group necessary for forming a carbon ring or a heterocyclic ring; and n represents 1 or 2.The silver halide photographic material is stable under storage conditions.
    Type: Grant
    Filed: July 11, 1985
    Date of Patent: April 21, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Akihiko Ikegawa
  • Patent number: 4649095
    Abstract: A nonseparation monosheet integrated type color diffusion transfer photographic film unit is disclosed comprising(a) a light-sensitive element comprising a support having provided thereon in this order an image receiving layer, a white reflection layer and at least one silver halide emulsion layer associated with a dye providing compound capable of forming or releasing a diffusible dye as a result of development;(b) a cover sheet;(c) at least one neutralizing layer;(d) a container provided between the emulsion layer of the light-sensitive element and the cover sheet, containing an alkali processing composition which contains an aluminum compound.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: March 10, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Minoru Sakai
  • 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: 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: 4559291
    Abstract: Photographic assemblages are described employing metallizable redox dye-releasers and a ligand having a coordinating site which is: ##STR1## In a preferred embodiment, the ligand is an alpha amino carboxylic acid, a 2-pyridinecarboxylic acid, a 2-aminoalcohol, a 2-hydroxymethylpyridine, a 2-hydroxyacetic acid, a 1,2-diamine or a 2-hydroxypyridine-N-oxide.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: December 17, 1985
    Assignee: Eastman Kodak Company
    Inventors: Stephen M. Neumann, Glenn T. Pearce, Theophilus Sorrell
  • Patent number: 4551411
    Abstract: Photographic assemblages are described employing metallizable redox dye-releasers and a sequestering agent which is gluconic acid, N[CH.sub.2 --P--(O)(OH).sub.2 ].sub.3 or (HO).sub.2 P(O)--C(CH.sub.3)(OH)--P(O)(OH).sub.2.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: November 5, 1985
    Assignee: Eastman Kodak Company
    Inventors: David P. Brust, Stephen M. Neumann, Edward Weissberger
  • Patent number: 4542086
    Abstract: A color diffusion transfer photographic element comprising (a) a light sensitive component containing at least one light sensitive silver halide emulsion layer associated with a dye releasing redox compound, (b) a dye image receiving component and (c) an alkaline processing composition component, wherein the improvement comprises at least one of said components (a), (b) and (c) containing a diffusible hydroquinone type compound having the half wave potential of polarography in the range of from -300 mV to -380 mV measured using a saturated calomel electrode as a reference electrode in a buffer solution having a pH of 13.0.degree. at 25.degree. C. The diffusible hydroquinone type compound has excellent gradation control properties and is particularly suitable for controlling gradation of the toe part in a photographic characteristic curve of a color diffusion transfer photograph.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: September 17, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobutaka Ohki, Motohiko Tsubota, Masakazu Morigaki, Tsutomu Hamaoka
  • Patent number: 4542092
    Abstract: A photographic element for a diffusion transfer process is described, comprising at least one support having thereon (1) a layer containing a dye-providing compound capable of releasing or forming a diffusible dye or a precursor thereof as a result of development, (2) a silver halide photographic emulsion layer which is in a complementary color relationship with the dye-providing compound, and (3) a substantially non-sensitive spacing layer between the layers (1) and (2) containing a solid pigment, a hydrophilic colloid, and a nondiffusible compound capable of undergoing a redox reaction with the oxidation product of a silver halide developing agent under an alkaline condition.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: September 17, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ichizo Toya, Osamu Takahashi
  • 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: 4485164
    Abstract: Photographic elements and assemblages are described employing positive-working redox dye-releasers, wherein the element contains an oxidant which is located between the support and the photosensitive portion thereof. The oxidant has an electrode potential of from about -200 mV up to about 1200 mV versus a saturated calomel electrode at a pH of about 5 to about 6. After processing, the oxidant reacts with the electron transfer agent to prevent it from reacting with the dye releaser which would otherwise cause further dye release. The reduced form of the oxidant is then substantially incapable of reducing the positive-working redox dye-releaser. D.sub.min stability is thereby improved.
    Type: Grant
    Filed: July 6, 1983
    Date of Patent: November 27, 1984
    Assignee: Eastman Kodak Company
    Inventors: Eugene A. Armour, Jal F. Munshi
  • Patent number: 4481277
    Abstract: This invention is concerned with producing color images of improved quality in photographic processes employing silver ion assisted cleavage reactions to provide a dye image by scavenging, i.e., rendering inert substantially all of the silver ion and/or soluble silver complex in the photographic system when image formation is substantially complete.
    Type: Grant
    Filed: February 2, 1983
    Date of Patent: November 6, 1984
    Assignee: Polaroid Corporation
    Inventor: William J. Pfingston
  • Patent number: 4474854
    Abstract: In a photographic material suitable as image receptor element for the dye diffusion transfer process, a dye absorbent layer arranged on a layer support contains nickel chelates or copper-II chelates of a compound corresponding to the following general formula I as metallizing agents for the formation of colored complexes from colorless or colored organic complex formers. The chelatable image dyes transferred imagewise to the dye adsorbent layer in the course of development give rise to the corresponding nickel or copper-II complexes with improved light stability. ##STR1## wherein R.sup.1 represents a hydrocarbon group having up to 30 carbon atoms optionally interrupted by --O--;R.sup.2, R.sup.3 represents H, alkyl having up to 5 carbon atoms or aryl having from 6 to 10 carbon atoms; andR.sup.4, R.sup.4' represents alkyl or alkoxy having from 1 to 4 carbon atoms, aralkyl or OH.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: October 2, 1984
    Assignee: Agfa-Gevaert AG
    Inventors: Peter Bergthaller, Jurgen Strauss
  • Patent number: 4458011
    Abstract: The present invention relates to compounds of the type comprising a ballasting group which renders said compounds substantially fast to diffusion in hydrophilic colloid media and at least one photographically useful group which is chemically linked to said ballasting group, and to photographic elements containing at least one compound of the type referred to.The ballasting groups in the compounds according to the present invention are derived from mono- or di-esters or -ethers of glycerol. The linkage between ballasting group and photographically useful group can be realized via acid chlorides which are derived from the above-said glycerol derivatives.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: July 3, 1984
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Christian C. Van de Sande, Jan J. Vandewalle, Marcel J. Monbaliu, Raphael K. Van Poucke
  • Patent number: 4447523
    Abstract: Useful scavengers for oxidized developing agents in photographic elements are 2,4-disulfonamidophenols, or alkali labile precursors of such phenols.
    Type: Grant
    Filed: June 9, 1983
    Date of Patent: May 8, 1984
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Ross, Wilbur S. Gaugh
  • Patent number: 4436810
    Abstract: Compounds corresponding to the formula: ##STR1## wherein Z represents a radical which completes a condensed aromatic ring system;R.sup.1 represents an n-valent aliphatic or aromatic radical;R.sup.2 represents H, alkyl or aryl,R.sup.3 represents one or more radicals to control the diffusion properties and the activation pH;andn represents 1 or 2,are suitable ED precursor compounds for use in color-photographic recording materials. They are preferably used in a combination with reducible dye-releasers. They are also suitable as so-called scavengers.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: March 13, 1984
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Karl Kuffner, Paul Marx, Wolfgang Lassig
  • Patent number: 4429033
    Abstract: Color prints are prepared in the form of retained images by the dye diffusion transfer process using a photographic recording material comprising in that order a transparent layer support, a light-sensitive element containing at least one silver halide emulsion layer and a non-diffusing color-providing compound associated thereto, a light-reflecting opaque layer and a mordant layer. The recording material is subjected to imagewise exposure through the transparent layer support. During development a colored moiety is released from the color-providing compound in imagewise distribution and transferred to the mordant layer. Silver and silver halide is removed by bleaching and fixing. The colored color-providing compounds retained in the light-sensitive element in imagewise distribution complementary to the transferred colored moiety form the color image visible through the transparent layer support against the light-reflecting background of the opaque layer.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: January 31, 1984
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Immo Boie, Manfred Peters, Thomas Kaluschke
  • Patent number: 4423142
    Abstract: Photographic material and process suitable for producing by diffusion transfer a color image and comprising on a support at least two differently spectrally sensitive negative working silver halide emulsion layers (FIG. 3, layers 12, 14 and 16) and having operatively associated with each of said emulsion layers a different non-diffusing dye providing compound that is initially immobile in an alkali-permeable colloid medium and wherefrom by reduction in alkaline medium a dye or dye precursor can be split off in diffusible state, wherein at least one of said negative working silver halide emulsion layers is associated in water-permeable relationship with a visible light-sensitive direct-positive emulsion layer (FIG. 3, layers 13 and 15) whereby interimage effects can be obtained.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: December 27, 1983
    Assignee: AGFA-Gevaert, N.V.
    Inventor: Wilhelmus Janssens
  • Patent number: 4420557
    Abstract: Compounds corresponding to the formula: ##STR1## wherein R.sup.1 represents an aromatic group, andR.sup.2 represents H, alkyl, alkenyl, aryl or acyl, are suitable ED precursor compounds for use in color photographic recording materials. They are preferably used in combination with reducible dye releasers. They are also suitable as so-called scavengers.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: December 13, 1983
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Heinrich Odenwalder, Paul Marx
  • Patent number: 4416970
    Abstract: Image transfer photographic assemblages, processes, compositions and cover sheets are described which employ a manganous compound. After processing, the manganous compound is capable of diffusing to the silver halide emulsion layer and a redox dye-releaser associated therewith to inhibit further dye release. Post-process D.sub.min stability is thereby improved.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: November 22, 1983
    Assignee: Eastman Kodak Company
    Inventor: Thomas O. Maier
  • Patent number: 4409315
    Abstract: Photographic assemblages are described employing positive-working redox dye-releasers and a cover sheet containing an oxidant having an electrode potential of from about -200 mV up to about 1000 mV versus a saturated calomel electrode at a pH of about 5 to about 6. The oxidant is capable of oxidizing electron transfer agent in the system. The reduced form of the oxidant is incapable of reducing the positive-working redox dye-releaser. After processing, the oxidant reacts with the electron transfer agent to prevent it from reacting with the dye releaser which would otherwise cause further dye release. D.sub.min stability is thereby improved.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: October 11, 1983
    Assignee: Eastman Kodak Company
    Inventors: Eugene A. Armour, Richard P. Henzel, Rowland G. Mowrey
  • Patent number: 4407928
    Abstract: Photographic assemblages and processes are described employing positive-working redox dye-releasers and a processing composition containing a ketal blocked quinone which is soluble therein. After processing, when the pH is lowered, the free quinone is released for reaction with residual electron transfer agent present in the assemblage to prevent it from reacting with the dye releaser, which would otherwise cause further dye release. D.sub.min stability is thereby improved.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: October 4, 1983
    Assignee: Eastman Kodak Company
    Inventor: Noel R. Vanier
  • Patent number: 4396699
    Abstract: A process for the production of a multi-color dye image by dye diffusion transfer operating with a photographic multilayer multi-color material containing different non-diffusing dyes or dye precursor compounds that when contacted with an aqueous alkaline liquid remain immobile in an alkali-permeable colloid layer but are capable of being reduced by a developing agent at a rate slower than the reduction of image-wise developable silver halide and in reduced state under alkaline conditions are capable of releasing a diffusible dye or dye precursor moiety, and wherein as illustrated in the drawing dye images with higher color saturation are obtained by more extensive oxidation of developing agent in the image-wise photo-exposed area due to the use in the alkaline processing liquid of a silver halide solvent forming an alkali-soluble and reducible silver complex compound.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: August 2, 1983
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Wilhelmus Janssens, Daniel A. Claeys
  • 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: 4366226
    Abstract: A color photographic silver halide light-sensitive material is described comprising a compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.3 can each represent an unsubstituted or substituted alkyl group or an unsubstituted or substituted aryl group, R.sup.2 can represent an unsubstituted or substituted alkyl group, R.sup.4 and R.sup.5 can each represent a hydrogen atom, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryloxy group, an unsubstituted or substituted alkylthio group, an unsubstituted or substituted arylthio group, a halogen atom, or an acylamino group, and R.sup.1 and R.sup.2, R.sup.1 and R.sup.4, or R.sup.2 and R.sup.5 together can represent atoms forming a condensed ring structure together with the benzene ring of formula (I), provided that the total of carbon atom numbers in R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is at least 16.
    Type: Grant
    Filed: July 22, 1981
    Date of Patent: December 28, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsutomu Hamaoka, Osamu Takahashi, Tooru Harada, Minoru Sakai, Nobutaka Ohki
  • 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: 4345016
    Abstract: A color photographic sensitive material containing a polymer comprising at least 1 mol % of a repeating unit represented by formula (I) ##STR1## wherein A represents a divalent group, n is 1 or 2, R.sub.1 represents hydrogen, a halogen atom or an alkyl group, and R.sub.2, R.sub.3, and R.sub.4 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an amino group, an acylamino group, or a sulfonamide group, and R.sub.3 and R.sub.4 together can form an aromatic ring, provided that the total of carbon atoms of R.sub.2, R.sub.3, and R.sub.4 is 60 or less.
    Type: Grant
    Filed: July 1, 1981
    Date of Patent: August 17, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Nobutaka Ohki, Kozo Aoki
  • Patent number: 4314020
    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: August 4, 1980
    Date of Patent: February 2, 1982
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. Reed, Patrick H. Saturno, Gerald L. Ducharme
  • Patent number: 4301243
    Abstract: Traces of free inhibitors for the development of silver halide which might be present as impurities of inhibitor releasing compounds or which might be prematurely released therefrom because of insufficient stability thereof during storage of the photographic material are scavenged by compounds which are capable of binding free inhibitors at pH values below 7 but to a much less extent at pH values higher than 9.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: November 17, 1981
    Assignee: AGFA-Gevaert Aktiengesellschaft
    Inventors: Walter Puschel, Heinrich Odenwalder, Erwin Ranz
  • Patent number: 4299895
    Abstract: A photographic element comprising a support, a layer containing an image dye ligand or dye ligand forming material and a layer containing a dye mordant, wherein the mordant layer has associated therewith:(1) a polymer containing groups which form coordination complexes with metal ions; and(2) a source of metal ions.The polymer holds the metal ions in the vicinity of the dye mordant so that the metal ions can metallize the dye or dye forming material at the image receiving layer. These complexes, elements, and receiving elements are particularly useful in diffusion transfer processes. Novel polymers are also described.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: November 10, 1981
    Assignee: Eastman Kodak Company
    Inventors: William C. Archie, Jr., Gerald A. Campbell
  • Patent number: 4288522
    Abstract: Receptor material adapted for use in a combined dye transfer and silver complex diffusion transfer process, comprising in order:(i) a support,(ii) a first hydrophilic colloid layer containing a cationic compound capable of mordanting an acid dye, and(iii) a transparent second hydrophilic colloid layer containing development nuclei for catalyzing the reduction therein of silver complex salts to silver and at least one organic compound having an anionic group linked to a carbon atom. The use of the receptor material for the production of a black-and-white silver image in combination with one or more dye images results in silver images of increased density.
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: September 8, 1981
    Assignee: Agfa-Gevaert N.V.
    Inventors: Frans Carael, Daniel A. Claeys, Wilhelmus Janssens
  • Patent number: 4269924
    Abstract: A photographic material for the production of multicolor images by means of diffusion transfer of complexed silver halide which includes a support having thereon at least three differently spectrally sensitive silver halide emulsion layers that are each sensitive to light of a different additive primary color, associated with each silver halide emulsion layer a silver precipitating layer containing development nuclei and a different dye-releasing compound for producing a subtractive multicolor image, and optionally one or more non-light-sensitive, non dye-releasing water-permeable hydrophilic colloid interlayers. In this material for better color separation the layers are arranged in a special order including the juxtaposition of two of the emulsion layers or separation thereof by layers penetrated by complexed silver halide so that the emulsion layers act as barriers against cross-diffusion.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: May 26, 1981
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Wilhelmus Janssens, Alphonse Somers, Daniel A. Claeys