Processing Additive Containing Patents (Class 430/486)
  • Patent number: 4965177
    Abstract: Potassium iodide (or a related iodide) when incorporated in an alkaline activator for use in a rapid access processor using developer-incorporated, resin-coated paper, (i) produces a cold image tone in black-and-white photographic prints, and (ii) maintains the image tone of a large number of prints within a narrow image tone range over a (one week or one thousand 8.times.10 inch print) design life of the activator solution.
    Type: Grant
    Filed: August 2, 1989
    Date of Patent: October 23, 1990
    Assignee: Eastman Kodak Company
    Inventor: Donald F. McLaen
  • Patent number: 4948713
    Abstract: There are disclosed a processing solution of a light-sensitive silver halide color photographic material, which comprises containing a compound represented by the formula (I) shown below, and a processing method of the same, which comprises subjecting a light-sensitive silver halide color photographic material having at least one layer of silver halide emulsion layer on a support to imagewise exposure and then applying processing including at least a color developing processing, characterized in that the color developing solution to be used in the color developing processing contains a compound represented by the formula (I) shown below: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or an alkyl group having 1 to 5 carbon atoms substituted with an alkoxy group, and R.sub.1 and R.sub.2 may be bonded with each other to form a ring containing an oxygen atom.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: August 14, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuhiro Kobayashi, Shigeharu Koboshi, Satoru Kuse, Masao Ishikawa
  • Patent number: 4906554
    Abstract: This invention relates to a color developing solution for processing of a light-sensitive silver halide color photographic material which comprises containing a compound represented by the following formula [I] and at least one compound selected from a compound represented by the following formula [II] and a compound represented by the following formula [III], and a processing method of a light-sensitive silver halide color photographic material, which comprises, after imagewise exposure of a light-sensitive silver halide color photographic material, carrying out processing including at least a color developing step, wherein the light-sensitive silver halide color photographic material has silver halide emulsion layers containing silver halide grains substantially comprised of silver chloride, and a color developing solution used in the color developing step contains the compound represented by the following formula [I] and at least one compound selected from the compound represented by the following formula
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: March 6, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Ishikawa, Shigeharu Koboshi, Kazuhiro Kobayashi, Keiji Ohbayashi, Mitsuhiro Okumura, Shigeo Chino, Kaoru Onodera
  • Patent number: 4900651
    Abstract: A method for processing a silver halide color photographic material is disclosed, which comprises developing a silver halide color photographic material with a color developer comprising:(a) an aromatic primary amine color developing agent;(b) at least one brightening agent represented by formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydroxyl group, an alkoxy group, an amino group, an alkylamino group, an aryloxy group or an arylamino group; provided that R.sub.1 is not the same as R.sub.3 when R.sub.2 is the same as R.sub.4, and R.sub.1 is not the same as R.sub.4 when R.sub.2 is the same as R.sub.3 ; and M represents a monovalent cation; and(c) at least one organic phosphonic acid series chelating agent.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: February 13, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Hiroshi Fujimoto
  • Patent number: 4897339
    Abstract: A method for processing a silver halide color photographic material including a step of developing the material with a developer containing an aromatic primary amine color developing agent and at least one compounds represented by the following general formulae (Ia) and (Ib): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represents a hydrogen atom or an unsubstituted alkyl group; R.sup.5, R.sup.6 and R.sup.7, which may be the same or different, each represents an unsubstituted alkylene group; X.sup.1 and X.sup.2, which may be the same or different, each represents ##STR2## --O--, --S--, --CO--, --SO.sub.2 or --SO--, or a combination thereof, and R.sup.8 represents a hydrogen atom or an unsubstituted alkyl group; and m and n, which may be the same or different, each is 0, 1, 2 or 3; and ##STR3## wherein R.sup.13 represents a substituted alkylene group; and R.sup.9, R.sup.10, R.sup.11 and R.sup.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: January 30, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuto Andoh, Takatoshi Ishikawa, Morio Yagihara
  • Patent number: 4895786
    Abstract: In a processing method for silver halide color photosensitive material in which silver halide color photosensitive material is treated to produce a color dye image with a processing solution that has a fixing ability, and subsequently is not washed but treated with a washless stabilizing solution, the improvement comprising treating said silver halide color photosensitive material with a washless stabilizing solution that contains a triazinylstilbene optical brightening agent in the presence of an amount sufficient to stabilize the dye image and reduce staining of the photosensitive material of at least one compound represented by General Formula (I), (II), (II') or (II"): ##STR1##
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: January 23, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masayuki Kurematsu, Shigeharu Koboshi
  • Patent number: 4891298
    Abstract: This invention relates to diffusion transfer photographic processes adapted to be performed in the presence of ambient light and to diffusion transfer products useful in such processes wherein a substantial increase in opacification in the red and near infrared region of the visible spectrum and a substantial increase in opacification in the blue and green region is achieved by employing certain alkyl-substituted phenanthrol/carboxynaphthol phthaleins as the light-absorbing, pH-sensitive optical filter agent for the longer wavelength region of the visible spectrum.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: January 2, 1990
    Assignee: Polaroid Corporation
    Inventor: David P. Waller
  • Patent number: 4886733
    Abstract: This invention relates to diffusion transfer photographic processes adapted to be performed in the presence of ambient light and to diffusion transfer products useful in such processes wherein unexpectedly enhanced opacification in the red and near infrared region of the visible spectrum is achieved by employing phenanthrol/carboxynaphthol phthaleins as the light-absorbing, pH-sensitive optical filter agent for the longer wavelength region of the visible spectrum.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: December 12, 1989
    Assignee: Polaroid Corporation
    Inventor: Myron S. Simon
  • Patent number: 4863836
    Abstract: There is provided a method for processing a silver halide color photographic material which comprises processing the silver halide color photographic material with a color developer containing an aromatic primary amine color developing agent and a specific amino compound. According to this method the stability and color forming property of a color developer are improved so that the increased fogging problem in continuous processing is lessened and the processing time is shortened. There is also provided a color developer composition which can be used as the developer, as it is or after adjusting its composition.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: September 5, 1989
    Assignee: Fuji Photo Film, Co., Inc.
    Inventors: Takatoshi Ishikawa, Nobutaka Ohki, Morio Yagihara
  • Patent number: 4863830
    Abstract: A process for hard tone development of a silver halide photographic light-sensitive material is described, comprising developing an imagewise exposed negative type silver halide photographic light-sensitive material in the presence of hydrazine, usig a developing solution comprising (1) a developing agent, (2) 0.25 mol/l or more of sulfite and (3) a compound represented by the general formula (I) and having a pH value of 10.5 to 12.3: ##STR1## wherein R.sub.1 and R.sub.2 represent each an alkyl group of R.sub.1 and R.sub.2 may form a ring by linking each other, R.sub.3 represents an alkyl group, an aryl group or a heterocyclic group, and R.sub.1, R.sub.2 and R.sub.3 may have substituents, A represents an alkylene group which may be substituted, and X represents --CONH--, --OCONH--, --NHCONH--, --NHCOO--, --COO--, --OCO--, --CO--, --NHCO--, --SO.sub.2 NH--, --NHSO.sub.2 --, --SO.sub.2 --or --O--.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: September 5, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Eiichi Okutsu, Kazumi Watase
  • Patent number: 4857448
    Abstract: An improved photographic silver halide element comprises a support, and an emulsion layer unit containing one or more photographic silver halide emulsions sensitized to the same spectral region and, adjacent each side of the emulsion layer unit, a layer substantially free of active silver halide containing an image modifier which is a compound capable of imagewise releasing an image-modifying compound on silver halide development wherein at least one of the layers contains a dye image-forming coupler. Such a layer arrangement enables greater control of the emulsion layer's response to oxidized developer generated upon processing.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: August 15, 1989
    Assignee: Eastman Kodak Company
    Inventor: Michael J. Simons
  • Patent number: 4842994
    Abstract: A silver halide photographic material is described, comprising a support having provided thereon at least one silver halide photographic emulsion layer and comprising a bleach accelerator-releasing coupler, wherein said bleach accelerator-releasing coupler is represented by formula (I)A--(TIME).sub.n --S--X--(Y).sub.m --(Z)l]a (I)wherein A represents a coupler residual group; TIME represents a timing group; n represents 0 or 1; X represents a cyclic aliphatic group or a saturated heterocyclic group; Y represents an aliphatic group having from 1 to 8 carbon atoms which may contain a group of --O--, a group of --S--, a group of --COO--, a group of --CO--, a group of ##STR1## a group of ##STR2## a group of --SO.sub.2 --or a group of ##STR3## in its chain; m represents an integer of from 0 to 3, and when m represents 2 or more, the two or more Y groups may be the same or different; Z represents a group of --OH, a group of --COOM, a group of --SO.sub.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: June 27, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kei Sakanoue, Seiji Ichijima
  • Patent number: 4824774
    Abstract: A silver halide negative photographic material is described, comprising a support, at least one silver halide emulsion layer, and one or more light-insensitive hydrophilic colloid layers, wherein said silver halide emulsion layer or said light-insensitive hydrophilic colloid layer contains a hydrazine derivative, and the photographic material has a film surface pH not higher than 5.8 on the side of said emulsion layer inclusive of said light-insensitive hydrophilic colloid layer; in another aspect, this invention is directed to a method for forming an ultrahigh contrast negative image, comprising exposing said photographic material imagewise, followed by development processing of the same with a developer containing at least 0.15 mol/liter of sulfite ion and having a pH of from 10.5 to 12.3.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: April 25, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuaki Inoue, Senzo Sasaoka
  • Patent number: 4810622
    Abstract: A method of processing a silver halide photographic material is described, comprising developing an exposed silver halide photographic material with an alkaline black-and-white developer having a pH value of 9.2 to 10 comprising:(1) at least one of hydroquinones, (2) at least one of 3-pyrazolidone-based developing agents, (3) at least one of dialdehyde-based hardening agents, (4) at least one antifoggant selected from the group consisting essentially of indazole-, benzimidazole-, benztriazole- and mercaptothiadiazole-based antifoggants, (5) at least one compound selected from the group consisting essentially of diethylenetriaminepentaacetic acid, triethylenetetraminehexaacetic acid, 1,3-diamino-2-propanoltetraacetic acid, ethylenediaminetetramethylenephosphonic acid, aminotrimethylenephosphonic acid and alkali metal salts thereof, (6) at least one of silver halide solvents, and (7) at least one compound selected from the group consisting essentially of sulfite, bisulfite, and metabisulfite.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: March 7, 1989
    Assignee: Fuji Photo Film, Co. Ltd.
    Inventors: Minoru Yamada, Takashi Toyoda
  • Patent number: 4804618
    Abstract: A method for treating a silver halide color photographic material comprising color developing an exposed silver halide color photographic material and treating it with a treating solution having bleaching power containing at least one ferric complex salt of an organic chelating compound represented by the formula (X-1): ##STR1## wherein W.degree. represents an alkylene group containing a thioether bond; Y.sup.1, Y.sup.2, Y.sup.3 and Y.sup.4 each independently represents a methylene group or an ethylene group; and Z.sup.1, Z.sup.2, Z.sup.3 and Z.sup.4 each independently represents a carboxyl group, a phosphono group, a sulfo group, or a hydroxyl group.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: February 14, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ueda, Kiyoshi Morimoto
  • Patent number: 4801521
    Abstract: A method for processing a silver halide color photographic material comprising the step of processing a silver halide color photographic material after imagewise exposure thereof with a color developer containing at least one aromatic primary amine developing agent and at least one hydrazine compound represented by formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4, which may be the same or different, each represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, provided that R.sup.1 and R.sup.2 may be linked to form a heterocyclic ring; R.sup.3 and R.sup.4 may be linked to form a heterocyclic ring; and at least two hydrazine moieties derived from the compound represented by formula (I) may be linked to form a dimer or polymer by any of R.sup.1, R.sup.2, R.sup.3, and R.sup.4.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: January 31, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobutaka Ohki, Nobuo Seto, Hideaki Naruse, Morio Yagihara, Kazuto Andoh, Takatoshi Ishikawa, Hiroshi Fujimoto
  • Patent number: 4801523
    Abstract: Process for preparing photographic emulsion comprising bringing aqueous silver and chloride-containing halide salt solutions into contact in the presence of a dispersing medium to form octahedral silver halide grains having a halide content of at least 50 mole percent chloride, based on total moles of silver present, the improvement forming the grains in the presence of a crystal modifying amount of an aminoazapyridine as described in pH range of 2.5 to 9, pCl range of 0 to 3, the aminoazapyridine compound being added after at least about 6% to about 45% of the silver salt solution has been added.The photographic emulsion is useful in x-ray, laser scanner films, as color separation elements and inverse transfer systems, etc.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: January 31, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas P. Tufano
  • Patent number: 4798784
    Abstract: A method for processing a silver halide color photographic material which comprises, after color development of an exposed silver halide color photographic material containing a hydrolyzable type DIR coupler, rapidly processing the developed silver halide color photographic material with a liquid having a bleaching ability and subsequently with a liquid having a bleach-fixing ability, to thereby form a color image.In accordance with the method for processing a silver halide color photographic material, desilveration is completed in a short period of time and color photographic images having excellent color reproducibility and fastness are obtained.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: January 17, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Toshihiro Nishikawa, Akira Abe, Junya Nakajima
  • Patent number: 4786583
    Abstract: A stabilizing bath which provides reduced stain and enhanced dye stability for photographic color elements which are processed therein is comprised of a dye stabilizing agent and an alkanolamine. The stabilizing bath is used as a final processing bath which follows treatment of the element in a fixing or bleach-fixing bath containing a thiosulfate fixing agent. The alkanolamine functions to prevent the precipitation of sulfur resulting from carryover of the thiosulfate fixing agent into the stabilizing bath.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: November 22, 1988
    Assignee: Eastman Kodak Company
    Inventor: Paul A. Schwartz
  • Patent number: 4782013
    Abstract: This invention is directed to a photographic element containing a radiation-sensitive silver halide emulsion layer and a macrocyclic thia or selena ether compound which also comprises oxygen atoms. These macrocyclic compounds are improved silver halide ripening agents.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: November 1, 1988
    Assignee: Eastman Kodak Company
    Inventors: Arthur H. Herz, Roger L. Klaus
  • Patent number: 4766058
    Abstract: A photographic material comprising at least one blue sensitive silver halide emulsion layer is disclosed. The silver density of the emulsion layer is not less than 4.0.times.10.sup.-1 g/cm.sup.3 and the dry thickness of the layer is not more than 4.0 .mu.m. A core/shell type silver halide emulsion and a high-speed reaction type scavenger for the oxidation products of a developing agent are preferably used for the emulsion layer. The photographic material has a high sensitivity and provides an image having a superior sharpness and resolution.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: August 23, 1988
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Takeshi Sampei, Toshifumi Iijima, Yoshitaka Yamada, Hiroshi Shimazaki, Kenji Kumashiro, Yoshiharu Mochizuki, Syoji Matsuzaka, Hiroshi Kashiwagi
  • Patent number: 4756996
    Abstract: A photographic processing composition which comprises an aqueous alkaline solution, a silver halide developing agent and a substantially water-insoluble, cationic polyoxyethylene amine containing 2 or 3 mols of ethylene oxide.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: July 12, 1988
    Assignee: Polaroid Corporation
    Inventor: Frank E. Debruyn, Jr.
  • Patent number: 4756997
    Abstract: An aqueous alkaline photographic silver halide developer composition comprising a dihydroxy benzene developing agent, an auxiliary superadditive developing agent, an antifogging agent, an antioxidant and a buffering agent, characterized by the fact that the composition further comprises a stabilizing amount of an .alpha.-ketocarboxylic acid.The developer composition has a better resistance against air oxidation and can be left in continuous transport automatic processors for several days without undergoing any substantial decrease of its developing properties.The developer composition is particularly useful in a process for the formation of a high contrast silver image by developing silver halide photographic elements including at least a negative acting surface latent image type silver halide emulsion in the presence of a hydrazine compound, preferably in the additional presence of an effective amount of a contrast promoting agent.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: July 12, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Carlo Marchesano
  • Patent number: 4740452
    Abstract: The present invention provides a process for preparing a negative image of high contrast comprising developing an exposed silver halide photographic material which is substantially a surface latent image-type material in the presence of a hydrazine derivative, wherein said material is processed with a water-soluble alkaline developer having a pH value of from 10.5 to 12.3 and at least comprising the following components (1) through (3):(1) a dihydroxybenzene-type developing agent;(2) 0.3 mole/liter (developer) or more of a sulfite preservative; and(3) from 0.01 to 0.30 mole/liter (developer) of a compound of formula (A) ##STR1## in which R.sub.2 represents an alkyl group having from 3 to 6 carbon atoms; R.sub.3 and R.sub.4 each represents an alkyl or hydroxyalkyl group having from 1 to 10 carbon atoms.The formed negative images are of high contrast and are almost free from silver stain. The sensitivity is high and the dot image quality is good.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: April 26, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Eiichi Okutsu, Mitsunori Hirano
  • Patent number: 4740363
    Abstract: Alkali is generated from two neutral parts by reacting a complexing agent such as sodium picolinate in one part with a slightly water-soluble metal compound such as zinc oxide in the other part in the presence of water.
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: April 26, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Hirai, Yoshiharu Yabuki, Kozo Sato
  • Patent number: 4699868
    Abstract: An alkaline aqueous tanning developing solution for photographic image development comprising at least one hydroxylamine derivative. Preferred formulations may also contain at least one water-miscible polyhydroxy aliphatic organic solvent and/or a developing agent which comprises a polyhydroxybenzene compound having at least two hydroxy groups and at least one electron withdrawing and good leaving group suitable for nucleophilic addition.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: October 13, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gebran J. Sabongi
  • Patent number: 4598040
    Abstract: There is provided a developer for use in a one-step process for the development of exposed film resulting in an exposurewise pattern of silver particles which are large enough to be used as printing elements in ink-printing techniques, providing a wide range of densities in the developed film. The developer is based on a buffered system of a developing agent, a sulfinic acid salt of the type HO-R-SO.sub.2.M..times.H.sub.2 O where R is a hydrocarbyl group and M is a cation, and a formaldehyde source, with conventional adjuvants such as anti-fogging agents and the like. Instead of the sulfinic acid salt defined above there may be used any compound which upon dissociation in a aqueous medium results in the same active ionic species.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: July 1, 1986
    Inventors: Yoel Netz, Arnold Hoffman
  • Patent number: 4587195
    Abstract: A method of processing a silver halide photographic material using a color developer containing at least two kinds of triazylstilbene brightening agents having maximum fluorescent wavelengths at least 4.mu. apart, said material containing a sensitizing dye and an antiirradiation dye.
    Type: Grant
    Filed: April 10, 1985
    Date of Patent: May 6, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Ishikawa, Shigeharu Koboshi, Masayuki Kurematsu
  • Patent number: 4471047
    Abstract: Image transfer photographic elements, assemblages, processes and compositions are described which employ carbon black in an opaque layer and/or alkaline processing composition, the carbon black having a deactivating compound adsorbed thereto so that dye image-providing material can diffuse through the opaque layer and/or processing composition without any substantial adsorption thereof to the carbon black, the deactivating compound being incapable of releasing any dye moiety therefrom.In a preferred embodiment, the deactivating compound has the following formula: ##STR1## wherein: (a) Ballast is an organic ballasting radical;(b) Z is ##STR2## or is part of Y; (c) G is OR.sup.1 or NHR.sup.2 wherein R.sup.1 is hydrogen or a hydrolyzable moiety and R.sup.
    Type: Grant
    Filed: October 20, 1983
    Date of Patent: September 11, 1984
    Assignee: Eastman Kodak Company
    Inventors: Kenneth C. Mattes, Harold C. Warren
  • Patent number: 4456674
    Abstract: This invention relates to diffusion transfer processes and products wherein the transmission density of the pigmented processing composition layer is increased by employing an alkali earth metal salt to increase the light-absorbing ability of a carboxynaphthol phthalein optical filter agent within said processing composition layer. In another embodiment, a carboxyindole phthalein optical filter agent also is included in said processing composition layer, and a zinc or cadmium salt is employed to shift the spectral absorption of the carboxyindole phthalein into the green region of the visible spectrum. In a further embodiment, a calcium salt is employed in a viscous pigmented processing compositon comprising a light-reflecting pigment, colloidal silica and a metal chelating agent, e.g., an alkylene polyamine polyacetic acid to stabilize the spreading characteristics of the compositions.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: June 26, 1984
    Assignee: Polaroid Corporation
    Inventors: Leon D. Cerankowski, Gary S. LaPointe, Neil C. Mattucci
  • Patent number: 4444871
    Abstract: Method for forming a direct positive-color image in which an imagewise exposure is applied to a direct positive silver halide color photosensitive material comprising a support and at least one light-sensitive silver halide emulsion layer which contain internal latent image type silver halide grains whose surfaces are not fogged, said method including applying a fogging exposure and color development wherein said fogging exposure is applied in a wet condition with a solution containing at least one fluorescent whitening agent.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: April 24, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuyoshi Miyaoka, Shigeharu Koboshi
  • Patent number: 4423126
    Abstract: A new color-forming 4-(4'-secondary or tertiary-amino)anilino-1-carboxamidonaphthalene dye precursor in a photographic material and process enables formation of a dye image by means of cross-oxidation without the need for a coupling reaction. The color-forming 4-(4'-secondary or tertiary-amino)anilino-1-carboxamidonaphthalene dye precursor is useful in a photographic silver halide material for producing (i) a dye image, or (ii) a dye image and silver image. The exposed photographic material is processed to produce (a) a positive dye image, (b) a negative dye and negative silver image, (c) a negative dye image or (d) a positive dye image and a positive silver image. New naphthoquinoneimide dyes are also described.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: December 27, 1983
    Assignee: Eastman Kodak Company
    Inventors: James E. Klijanowicz, Csaba A. Kovacs
  • 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: 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: 4383028
    Abstract: A photographic chemistry comprised of a solution containing a mixture of different chemicals which cooperate to minimize the need for long film exposure times to achieve high film quality and contrast. The photographic chemistry includes a number of alkalies in a pH range from about 8 to 14, a developer in solution with the alkalies, a solvent mixed with the alkalies and the developer, a modified alkanolamide in solution with the alkalies, the developer and the solvent, and a hydrotrope mixed with the modified alkanolamide. Other chemicals that can be used in the photographic chemistry include an emulsion penetrant, a cleaner for various components of film processing equipment, a chelating agent, and an enzyme to enhance the reactions of the various chemicals in the photographic chemistry. A specific mixture of chemicals is disclosed.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: May 10, 1983
    Assignee: Lorin W. Boots
    Inventor: Byron R. Boots
  • Patent number: 4371609
    Abstract: A method of forming dye images by processing a photographic material containing imagewise distributed catalyzer substance in the presence of hydrogen peroxide, a coupler and certain aromatic primary amine compounds.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: February 1, 1983
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Makoto Kajiwara, Akihiko Miyamoto, Keiji Ohbayashi, Masaru Iwagaki
  • Patent number: 4368258
    Abstract: In the process for preparing impregnated polymer latex compositions by impregnating a hydrophobic substance in dispersed polymer particles in an aqueous polymer latex, the improvement comprises impregnating said hydrophobic substance, wherein the impregnation is effected by mixing said hydrophobic substance which is solid state, a water-miscible organic solvent and aqueous polymer latex wherein a polymer of the polymer latex is prepared from ethene monomers and containing at least one hydrophilic group.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: January 11, 1983
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Mitsuto Fujiwhara, Syunji Matsuo, Tsuneo Wada, Naoto Abe, Toyoaki Masukawa, Akio Iijima, Keiji Oishi
  • Patent number: 4299913
    Abstract: The stability of baths containing fogging agents, especially the stability of baths containing tin-II-ions, is increased by addition of an agent of the following formula ##STR1## respectively, a tautomeric or a salt thereof, the meaning of the substituents being as indicated in the specification.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: November 10, 1981
    Assignee: Agfa-Gevaert AG
    Inventor: Ubbo Wernicke
  • Patent number: 4287291
    Abstract: This invention relates to a light-sensitive color photographic material and more particularly to a diffusion transfer color photographic film unit, the processing composition of which contains a specific saturated aliphatic or saturated alicyclic alcohol.
    Type: Grant
    Filed: November 21, 1979
    Date of Patent: September 1, 1981
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventor: Kaoru Onodera
  • Patent number: 4287297
    Abstract: Disclosed is a liquid composition for treating photosensitive laminates having an alcohol-soluble polyamide layer, which comprises 12 to 70 parts by weight of an aromatic neutral salt, 0.01 to 10 parts by weight of an alkali, 1 to 15 parts by weight of an alcohol and 84 to 100 parts by weight of water.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: September 1, 1981
    Assignee: Daicel Chemical Industries Ltd.
    Inventors: Tetsuo Ishihara, Keizi Kubo
  • Patent number: 4286041
    Abstract: A composition and process for developing diazotype material utilizes a developing liquid comprising a buffered, aqueous solution of an azo-coupling component having a pH between 5.5 and 8 and, as an additive compound, sorbic acid, an alkali metal salt, ammonium salt, or magnesium salt of sorbic acid or mixtures of the same. The process produces a clear copy image more quickly than a process in which the developing liquid does not contain the additive compound and, when the azo-coupling component is a mixture of phloroglucinol and resorcinol, forms a neutrally black image. The additive compound is added in an amount of 10 to 80%, and preferably 30 to 60%, by weight, of the maximum amount soluble in the solution at room temperature.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: August 25, 1981
    Assignee: Oce-van der Grinten
    Inventor: Wilhelmus J. M. van de Vorle
  • Patent number: 4273863
    Abstract: A process of forming color images comprises imagewise exposing a silver halide photographic color image-transfer product comprising an image dye-providing compound in the presence of a silver halide developer, and treating the exposed photographic product with an alkaline processing composition in the presence of an amino acid or a combination of an acid and an amine. Color images are achieved having excellent image discrimination (Dmax-Dmin).
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: June 16, 1981
    Assignee: Eastman Kodak Company
    Inventors: Jean Deabriges, Yves Ferre, Claude Goumont
  • Patent number: 4271261
    Abstract: A developer composition for a lithographic printing plate provided with a coated layer composed of a photosensitive polymer having in the main chain thereof groups of formula (I) ##STR1## wherein X and Y independently represent hydrogen, halogen, cyano or nitro, and n is an integer of 1 or 2, comprising ethylene glycol monophenyl ether and at least one acid selected from the group consisting of a mineral acid, an organic carboxylic acid and an organic sulfonic acid.
    Type: Grant
    Filed: December 21, 1979
    Date of Patent: June 2, 1981
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Shigeki Shimizu, Hiroshi Ide
  • Patent number: 4269929
    Abstract: High contrast development of photographic elements, such as lithographic films used in the field of graphic arts, is carried out in the presence of a hydrazine compound with an aqueous alkaline developing solution which has a pH of above 10 and below 12 and contains a dihydroxybenzene developing agent, a 3-pyrazolidone developing agent, a sulfite preservative, and a contrast-promoting amount of an amino compound. The developing solution combines the advantages of high capacity, a high degree of stability, and a long effective life, while providing excellent contrast and speed characteristics.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: May 26, 1981
    Assignee: Eastman Kodak Company
    Inventor: Ronald J. Nothnagle
  • Patent number: 4266481
    Abstract: Aqueous solutions are provided for treating image-bearing lithographic plates.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: May 12, 1981
    Assignee: The Dow Chemical Company
    Inventors: Walter L. Garrett, Ralph G. Czerepinski
  • Patent number: 4267255
    Abstract: A processing composition adapted for use in a silver diffusion transfer film unit which comprises an aqueous alkaline solution, a silver halide developing agent and a surfactant comprising a hydrophobe and a polyethylene oxide portion containing an average of about 5-25 repeating units of ethylene oxide per hydrophobe.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: May 12, 1981
    Assignee: Polaroid Corporation
    Inventor: Karl J. Schreiber
  • Patent number: 4255512
    Abstract: A multicolor diffusion transfer photographic system wherein development of an exposed multilayer photsensitive element is effected in the presence of a ligand which is represented by the formula ##STR1## wherein R is hydrogen, alkyl or hydroxyalkyl, m is an integer of from 3 to 10 and n is 0 or an integer of from 1 to 3 with the proviso that the sum of m and n is not greater than 10.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: March 10, 1981
    Assignee: Polaroid Corporation
    Inventors: George H. Nawn, Donald O. Rickter
  • Patent number: 4255510
    Abstract: Photographic elements, assemblages and processes for color diffusion transfer photography are described wherein certain azole compounds having at least two nitrogen atoms are employed as development restrainer precursors. Preferred azole compounds include benzotriazoles, triazoles, tetrazoles, indazoles and benzimidazoles. The azole compounds have an alkali-hydrolyzable, N,N-disubstituted carbamoyl group on one of the two nitrogen atoms.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: March 10, 1981
    Assignee: Eastman Kodak Company
    Inventors: Michael J. Simons, David T. Southby, Hans G. Ling
  • Patent number: 4248955
    Abstract: A multicolor diffusion transfer photographic system wherein development of an exposed multilayer photosensitive element is effected in the presence of an oligomer which is represented by the formulaR.sub.1 O(CH.sub.2 CH.sub.2 O).sub.m R.sub.2wherein R.sub.1 and R.sub.2 each independently may be --CH.sub.3 or --C.sub.2 H.sub.5 and m is an integer of from 4 to 10.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: February 3, 1981
    Assignee: Polaroid Corporation
    Inventor: George H. Nawn
  • Patent number: 4232112
    Abstract: In a process of developing an imagewise exposed silver halide color photographic photosensitive material with a color developing solution and then bleach-fixing with a bleach-fixing solution, the improvement which comprises adding, to at least one of the color developing solution and the bleach-fixing solution, at least one whitening agent selected from 4,4'-diaminostilbenedisulfonic acid derivatives and at least one additive selected from sulfonic acid derivatives of benzene or naphthalene, optionally containing alkyl or alkenyl groups.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: November 4, 1980
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventor: Satoru Kuse