Amplifying Patents (Class 430/414)
  • Patent number: 7018784
    Abstract: The invention relates to a process for amplifying structured resists. The process permits a subsequent increase in the etch resistance and a change in the structure size of the resist even in the case of ultrathin layers. The chemical amplification is carried out in a solvent that is so nonpolar that it does not dissolve the structured resist or dissolves it only to an insignificant extent. Because of the lower surface tension of these solvents, the danger of a collapse of these structures is additionally avoided.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: March 28, 2006
    Assignee: Infineon Technologies AG
    Inventors: Jörg Rottstegge, Waltraud Herbst, Gertrud Falk, Eberhard Kühn
  • Patent number: 6759184
    Abstract: A process for the post-exposure amplification of resist structures uses amplification of resist structures of fluorinated resist polymers by structural growth of the structures by targeted chemical bonding of fluorinated oligomers. In the first step, a fluorine-containing resist is applied to a substrate. After exposure and development of the resist, bonding of an amplification agent chemically amplifies the resist structures. A fluorine-containing amplification agent is preferably used to achieve an improved reaction between polymer and amplification agent due to the improved miscibility of the molecular chains.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: July 6, 2004
    Assignee: Infineon Technologies AG
    Inventors: Jörg Rottstegge, Christian Eschbaumer, Christoph Hohle, Waltraud Herbst, Michael Sebald
  • Publication number: 20040121270
    Abstract: A method of processing material in which the material is held on the outside periphery of a drum and processing solution is applied at least twice to the sensitized surface of the material as the drum rotates. The total volume of solution applied is less than 300 ml/sqm of material being processed.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 24, 2004
    Applicant: Eastman Kodak Company
    Inventors: Gareth Evans, Peter Hewitson, Leslie R. Wells
  • Patent number: 6660461
    Abstract: An amplified color developing composition is stabilized with a cyclicaminomethanediphosphonic acid or salt thereof alone of in combination with other stabilizing compounds. This composition also comprises a color developing agent, a redox oxidizing agent (such as hydrogen peroxide), and a hydroxylamine antioxidant for the color developing agent. The amplified color developing composition can be formulated using a two- or three-part processing kit. The composition can be used to provide images in various color photographic silver halide materials such as color photographic papers.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: December 9, 2003
    Assignee: Eastman Kodak Company
    Inventors: Shirleyanne E. Haye, Janet M. Huston, Richard R. Horn, Anthony Jarkowski
  • Patent number: 6649330
    Abstract: In accordance with one embodiment of the invention, a photographic element is described comprising a support bearing one or more hydrophilic colloid layers including at least one photographic silver halide emulsion layer, wherein sequestered silver ions are incorporated into at least one hydrophilic colloid layer in the form of a silver ion containing material which sequesters silver ions prior to photographic processing and releases silver ions upon exposure to photographic processing solutions. Method for preparing and processing such photographic element are also described. In accordance with particular embodiments of the invention, the silver ion containing material comprises a silver ion-exchanged zeolite material or an intercalation composition comprising a layered host material having silver ions inserted as guest ions between the layers of the host material.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: November 18, 2003
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, Kenneth J. Lushington, Tiecheng A. Qiao, James S. Honan
  • Patent number: 6440653
    Abstract: A method of producing a photographic image in an imagewise exposed photographic material comprising one or more silver halide emulsion layers comprises developing the material with a developer solution containing a silver halide developing agent, applying to the surface of the developed material a solution of a sulphite compound that reacts with oxidised developing agent and prevents further development, and applying to the surface of the developed material a solution of an oxidant that oxidises any remaining developing agent, wherein said sulphite compound is present in an amount sufficient to react with all the oxidised developing agent and said solutions of sulphite and oxidant are applied to the material by means other than immersion in a tank.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: August 27, 2002
    Assignee: Eastman Kodak Company
    Inventors: John R. Fyson, Louis E. Friedrich
  • Publication number: 20020015921
    Abstract: A method of producing a photographic image in an imagewise exposed photographic material comprising one or more silver halide emulsion layers comprises
    Type: Application
    Filed: May 10, 2001
    Publication date: February 7, 2002
    Applicant: Eastman Kodak Company
    Inventors: John R. Fyson, Louis E. Friedrich
  • Publication number: 20020015922
    Abstract: A method of producing a photographic image in an imagewise exposed photographic material comprising one or more silver halide emulsion layers comprises
    Type: Application
    Filed: May 10, 2001
    Publication date: February 7, 2002
    Applicant: Eastman Kodak Company
    Inventors: John R. Fyson, Gareth B. Evans, Peter Hewitson, Jon A. Kapecki
  • Patent number: 6303279
    Abstract: An aqueous redox amplifier composition comprising a color developing agent, hydrogen peroxide or a compound which provides hydrogen peroxide and hydroxylamine or a salt thereof wherein the concentration ranges are: hydrogen peroxide from 0.5 to 10 ml/l (as 30% w/w solution), hydroxylamine or a salt thereof from 0.25 to 5.5 g/l (as hydroxylamine sulphate), and wherein the pH is in the range from 10.5 to 12.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: October 16, 2001
    Assignee: Eastman Kodak Company
    Inventor: Peter Jeffery Twist
  • Patent number: 6159668
    Abstract: There is disclosed a method for forming a color-image, which method comprises 1 containing, in a light-sensitive material, a dye-forming coupler, and a compound or its precursor, that is oxidized by a silver halide, to form an oxidation product thereof, that is coupled with the coupler, to form a dye having an absorption in a visible wavelength region; 2 having a given coating silver amount; and 3 applying a peroxide-containing solution onto the light-sensitive material, by a coating method by droplet-spraying. The method can achieve both "a lowered amount of a waste solution" and "reduction in a change of the processing.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: December 12, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiyuki Makuta
  • Patent number: 6156488
    Abstract: A method of processing an imagewise exposed photographic silver halide material which includes a redox amplification dye image-forming step and a bleach step using an aqueous solution of hydrogen peroxide or a compound capable of releasing hydrogen peroxide.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: December 5, 2000
    Assignee: Eastman Kodak Company
    Inventors: Peter Douglas Marsden, John Richard Fyson
  • Patent number: 6114101
    Abstract: An aqueous redox amplifier composition comprising a color developing agent, hydrogen peroxide or a compound which provides hydrogen peroxide and a hydroxylamine compound of the formula: ##STR1## or a salt thereof wherein R.sup.1 and R.sup.2 are each a substituted or unsubstituted alkyl group of 1-4 carbon atoms and wherein the concentration ranges are:hydrogen peroxide from 0.5 to 10 ml/l (as 30% w/w solution),hydroxylamine compound from 0.5 to 15 ml/l (as an 85% solution of diethylhydroxylamine), and wherein the pH is in the range from 10.5 to 12.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: September 5, 2000
    Assignee: Eastman Kodak Company
    Inventor: Peter Jeffery Twist
  • Patent number: 6063553
    Abstract: A photographic recording material for use in redox amplification comprises a support having thereon a plurality of emulsion layers, each emulsion layer containing a color-forming coupler, and wherein the activity of the couplers is from 45 to 70% as measured by the citrazinic acid method. These materials may be developed by a redox development step which may be followed by a bleach-fix step without any intervening step. Staining is eliminated with the use of these photographic materials.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: May 16, 2000
    Assignee: Eastman Kodak Company
    Inventors: Adrian J. Codling, John R. Fyson
  • Patent number: 6060225
    Abstract: There is disclosed a method for forming a color-image, which method comprises 1 containing, in a light-sensitive material, a dye-forming coupler, and a compound or its precursor, that is oxidized by a silver halide, to form an oxidation product thereof, that is coupled with the coupler, to form a dye having an absorption in a visible wavelength region; 2 having a given coating silver amount; and 3 applying a peroxide-containing solution onto the light-sensitive material, by a coating method by droplet-spraying. The method can achieve both "a lowered amount of a waste solution" and "reduction in a change of the processing.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: May 9, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiyuki Makuta
  • Patent number: 5985509
    Abstract: A high contrast photographic material comprises a support bearing a silver halide emulsion layer. This material is free from nucleating agents and has a silver:gelatin ratio greater than 1. The emulsion layer comprises silver halide grains that are spectrally sensitized. Moreover, the material contains a density enhancing amine compound in the emulsion layer or in an adjacent hydrophilic colloid layer. The spectrally sensitized silver halide grains comprise one grain population sensitized to radiation of a particular wavelength region, and one or more additional grain populations sensitized to radiation of a different wavelength region.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: November 16, 1999
    Assignee: Eastman Kodak Company
    Inventors: Allison Hazel C. Dale, Roger H. Piggin
  • Patent number: 5972573
    Abstract: An image forming method of a silver halide light sensitive photographic material including a color image forming layer containing a silver halide emulsion and a dye providing material is disclosed, the image forming method comprising the steps of developing the exposed photographic material with a first processing solution and subjecting the developed photographic material to amplification with a second processing solution, wherein the first processing solution contains a black-and-white developing agent and a color developing agent.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: October 26, 1999
    Assignee: Konica Corporation
    Inventors: Kazuhiro Miyazawa, Shigeo Tanaka, Noriyuki Kokeguchi, Yoshihiko Suda, Junji Ito
  • Patent number: 5972575
    Abstract: Methods of selectively silvering photographic materials. A method for selective reflective silvering of color negative photographic materials, whereby an attractive image comprising reflective silver, black, and full color areas may be obtained, comprises the steps of developing the materials using a conventional color developer, applying a reflective silvering bath, and removing silver from selected areas of said materials. A method for selective reflective silvering of color positive photographic materials comprises the steps of developing said materials using a conventional color developer, applying a reflective silvering bath, and removing silver from selected areas of said materials.
    Type: Grant
    Filed: March 20, 1998
    Date of Patent: October 26, 1999
    Inventor: Victoria Cabezas
  • Patent number: 5968721
    Abstract: A process for the redox development of an imagewise exposed photographic recording material comprises developing the photographic material in a redox developer/amplifier solution containing peroxide as an oxidizing agent, hydroxylamine as an antioxidant, and to improve the stability of the solution under aeration conditions, an effective amount of a mono or di-N-substituted hydroxylamine. The molar ratio of hydroxylamine to N-substituted hydroxylamine may be from 1:200 to 100:1. The substituents in the mono- or di-N-substituted hydroxylamine may be substituted or unsubstituted monovalent organic groups having 1 to 12 carbon atoms.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: October 19, 1999
    Assignee: Eastman Kodak Company
    Inventor: Peter J. Twist
  • Patent number: 5968717
    Abstract: A process for forming a photographic image includes a color development step and a combined bleach/redox amplification step. The bleach amplification step is effected by applying to the surface of the photographic paper or other material an amount of bleach/redox amplifier solution in the range from 20 to 500 ml/m.sup.2. The solution applied to the surface is used once only and contains hydrogen peroxide or a peroxide releasing compound.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: October 19, 1999
    Assignee: Eastman Kodak Company
    Inventor: Nigel Richard Wildman
  • Patent number: 5965334
    Abstract: A process for the development of an imagewise exposed photographic recording material containing more than 200 mg/m.sup.2 of silver comprises subjecting the photographic recording material to a development/amplification step using a developer/amplifier solution containing an oxidizing agent, and controlling the process temperature within the range of from 20 to 50.degree. C. and the process time between 5 and 20 seconds. After the development/amplification step, the photographic material can be immediately subjected to a bleach-fix step, and staining is avoided.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: October 12, 1999
    Assignee: Eastman Kodak Company
    Inventors: John R. Fyson, Helen M. Redfearn
  • Patent number: 5925504
    Abstract: A silver halide material can be processed using a redox amplification developer solution and a bleach solution. Both solutions contain a peroxide oxidant.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: July 20, 1999
    Assignee: Eastman Kodak Company
    Inventor: John Richard Fyson
  • Patent number: 5916739
    Abstract: An image forming method of a silver halide light sensitive photographic material having at least one color image forming layer containing a silver halide emulsion and a dye forming coupler, the image forming method comprising the steps of exposing the photographic material to light and subjecting the exposed photographic material to amplification development to form a dye image, wherein the color image forming layer contains a coupler capable of forming a dye, upon development, having a molar extinction coefficient at a wavelength of an absorption maximum of 60,000 or more.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: June 29, 1999
    Assignee: Konica Corporation
    Inventors: Kazuhiro Miyazawa, Shigeo Tanaka
  • Patent number: 5900353
    Abstract: Photographic materials are processed by color development and a peroxide amplifier solution. The color developer contains an alkali metal phosphate and has a pH of 11 to 12.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: May 4, 1999
    Assignee: Eastman Kodak Company
    Inventor: Nigel Richard Wildman
  • Patent number: 5879865
    Abstract: An image forming method for a silver halide photographic light sensitive material comprising a support having thereon a color image forming layer containing a silver halide emulsion and a dye forming coupler is disclosed, comprising (i) subjecting the photographic material to area modulation exposure and (ii) subjecting the exposed photographic material to amplifying development to form a color image.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: March 9, 1999
    Assignee: Konica Corporation
    Inventors: Kazuhiro Miyazawa, Shigeo Tanaka
  • Patent number: 5871891
    Abstract: A processing method can be used to develop sequentially both low silver and relatively high silver photographic materials in the same processor. The method includes a development step for each type of material, in any order, with a developer solution adapted for both development steps. When the lower silver photographic materials are developed, the developer solution also contains an oxidizing agent to render it a redox developer/amplifier solution. The oxidizing agent is removed or inactivated when the relatively high silver photographic materials are processed with the same developer solution.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: February 16, 1999
    Assignee: Eastman Kodak Company
    Inventors: Gareth B. Evans, Peter J. Twist
  • Patent number: 5837430
    Abstract: An image forming method using a silver halide photographic light-sensitive material is disclosed The image forming method comprises the steps of (1) imagewise exposing to light a silver halide photographic material comprising a support having thereon a photographic layer including a yellow image forming silver halide emulsion layer, a magenta image forming silver halide emulsion layer and a cyan image forming silver halide emulsion layer, and (2) developing the silver halide photographic light-sensitive material with an amplifying development, in which silver halide grains contained each of the color forming layers have a silver chloride content of not less than 80 mole-%, and the number of silver halide grains per unit area in the magenta silver halide emulsion layer is larger than that in the yellow image forming silver halide emulsion layer and that in the cyan image forming silver halide emulsion layer, and the number of silver halide grains per unit area in the magenta image forming silver halide emulsio
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: November 17, 1998
    Assignee: Konica Corporation
    Inventors: Kazuhiro Miyazawa, Shigeo Tanaka
  • Patent number: 5783375
    Abstract: A redox amplification process with minimal steps includes processing a silver halide with an amplifier/bleach/fix solution that includes a redox oxidant capable of bleaching a silver image and a fixing agent that does not react with the redox oxidant.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: July 21, 1998
    Assignee: Eastman Kodak Company
    Inventor: Peter Jeffery Twist
  • Patent number: 5766831
    Abstract: A color photographic material is processed first by color development, then is contacted with a solution that both bleaches and provides redox amplification.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: June 16, 1998
    Assignee: Eastman Kodak Company
    Inventor: Nigel Richard Wildman
  • Patent number: 5756270
    Abstract: A method of processing an imagewise exposed photographic silver halide color material which comprises color development and bleach steps. Between these two steps is a fixing, stop or wash step, the solution for which is passed through an absorbent material that removes carryover color developing agent.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: May 26, 1998
    Assignee: Eastman Kodak Company
    Inventor: John Richard Fyson
  • Patent number: 5756268
    Abstract: If a color photographic material, which is processed by the process steps a) image-by-image exposure, b) color developing, c) bleaching, d) fixing, e) washing or stabilizing, and f) drying, wherein steps c) and d) may be combined to constitute bleach-fixing, is subjected to a temperature treatment of 0.01 to 30 seconds at 60 to 240.degree. C. between exposure and color developing, an increase of the contrast can thereby be obtained.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: May 26, 1998
    Assignee: Agfa-Gevaert AG
    Inventors: Edgar Draber, Rudolf Tromnau, Manfred Peters
  • Patent number: 5741631
    Abstract: A process for the formation of a dye image by a redox amplification process in an imagewise exposed photographic color material having at least one silver halide layer and associated therewith a dye image-forming color coupler, comprises treating the material in a color developer solution containing a color developing agent and hydroxylamine as developing agent preservative. The color developing solution is replenished directly as solids or liquid concentrates with or without additional water. The process is carried out in a tank in which the ratio of the tank volume to maximum area of material accommodatable therein is less than 11 dm.sup.3 /m.sup.2.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: April 21, 1998
    Assignee: Eastman Kodak Company
    Inventor: Peter Jeffery Twist
  • Patent number: 5738980
    Abstract: Processing of color photographic materials can be accomplished using an aqueous redox amplifier composition comprising a color developing agent, an antioxidant therefor, hydrogen peroxide, and a stabilizing amount of nitrite ions to reduce dye loss during storage.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: April 14, 1998
    Assignee: Eastman Kodak Company
    Inventors: Peter Jeffrey Twist, Christopher John Winscom
  • Patent number: 5736295
    Abstract: A density enhancing amine compound is incorporated into a silver halide element containing both spectrally sensitized and non-spectrally sensitized silver halide grains in the emulsion layer.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: April 7, 1998
    Assignee: Eastman Kodak Company
    Inventors: Allison Hazel Caroline Dale, Roger Hugh Piggin
  • Patent number: 5731135
    Abstract: An aqueous redox amplifier solution having a pH in the range 10.0 to 13.5 comprises:a color developing agent and/or auxiliary developing agent, hydrogen peroxide or a compound that provides hydrogen peroxide in a concentration equivalent to 0.1 to 50.0 ml/l of 30% w/w solution, anda borate or other complexing compound capable of reversibly forming a complex with hydrogen peroxide, the complexing compound being in a concentration of from 1.0 to 100.0 g/l, andwherein the relative amounts of complexing compound and hydrogen peroxide are such as to provide an amount of hydrogen peroxide effective for redox amplification and buffer the hydrogen peroxide and thereby reduce the decline in the rate of redox amplification. This solution is useful for processing color photographic elements.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: March 24, 1998
    Assignee: Eastman Kodak Company
    Inventors: Peter Jeffery Twist, Christopher John Winscom
  • Patent number: 5707786
    Abstract: By means of a development intensification process for processing color photographic silver halide materials, the silver halide emulsions of which contain more than 90 mol. % of AgCl and less than 0.8 g of silver halide per m.sup.2 (stated as the equivalent quantity of AgNO.sub.3), short processing times accompanied by stable replenishment rates are obtained if at least one compound of the formulae (I), (II) or (III) is used as the developer substance in a quantity of 0.002 to 0.04 mol/l of developer solution ##STR1## in which R.sub.1 to R.sub.3, R.sub.10 to R.sub.17, R.sub.21 to R.sub.23, m, n and Y have the meaning stated in the specification.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: January 13, 1998
    Assignee: Agfa-Gevaert
    Inventors: Arno Schmuck, Jorg Hagemann, Norman Klaunzer
  • Patent number: 5702873
    Abstract: A redox-amplification solution comprising hydrogen peroxide, or a substance capable of releasing hydrogen peroxide, or reducing agent, such as a color developing agent, and in combination three or more sequestering agents for complexing with a transition metal ion to inhibit catalysis of impurities emanating from a photographic film coating and enhance the stability of the solution; a method of photographic color processing including a step using the redox-amplification solution and its use therefor.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: December 30, 1997
    Assignee: Eastman Kodak Company
    Inventor: Peter Jeffery Twist
  • Patent number: 5702874
    Abstract: High silver chloride photographic materials are processed using a development stop bath containing a sulfite fixing agent, followed by bleaching, fixing and treatment with an oxidizing agent that destroys sulfite ions. No washing or stabilizing steps are used after the treatment with oxidizing agent.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: December 30, 1997
    Assignee: Eastman Kodak Company
    Inventors: John Richard Fyson, Gareth Bryn Evans
  • Patent number: 5695913
    Abstract: A process for the formation of a color image which comprises the steps of: exposing to light a silver halide light-sensitive material comprising a support having thereon at least one light-sensitive emulsion layer, and developing said light-sensitive material to form a color image, wherein said light-sensitive material comprises at least one dye-forming coupler and at least one coloring reducing agent represented by formula (I) and is intensified with a solution containing hydrogen peroxide or a compound releasing hydrogen peroxide to form an intensified image:R.sup.11 --NH--NH--X--R.sup.12 (I)wherein R.sup.11 represents an aryl group or a heterocyclic group; R.sup.12 represents an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group; and X represents --SO.sub.2 --, --CO--, --COCO--, --CO--O--, --CO--N(R.sup.13)--, --COCO--O--, --COCO--N(R.sup.13)--, or --SO.sub.2 --N(R.sup.13)--, in which R.sup.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: December 9, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koichi Nakamura, Koki Nakamura, Kiyoshi Takeuchi
  • Patent number: 5686229
    Abstract: A photographic material is processed by fixing during or after development, followed by redox amplification while monitoring image formation and adjusting to treatment time or composition of the redox amplifying solution, to obtain desired results.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: November 11, 1997
    Assignee: Eastman Kodak Company
    Inventor: Peter J. Twist
  • Patent number: 5681755
    Abstract: An improved method for depositing metal particles on a marker which catalyzes the reduction of metal ions from a physical developer comprising a solution of metal ions, a molar excess of complexant in respect to the metal ions and a reducing agent. Said method being preferably employed for the detection of one or more components of an aggregate formed between a least one specific binding agent and its corresponding bindable substance by labelling at least one component of said aggregate with a marker and contacting said aggregate with a physical developer, whereby under influence of the marker a metal particle is formed which can be detected. Further the invention also relates to solutions and test-kits adapted for carrying out the above mentioned method.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 28, 1997
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Marcus J. M. Noppe, Frank J. Konings
  • Patent number: 5674755
    Abstract: An improved method for depositing metal particles on a marker which catalyzes the reduction of metal ions from a physical developer comprising a solution of metal ions, a molar excess of complexant in respect to the metal ions and a reducing agent. Said method being preferably employed for the detection of one or more components of an aggregate formed between a least one specific binding agent and its corresponding bindable substance by labelling at least one component of said aggregate with a marker and contacting said aggregate with a physical developer, whereby under influence of the marker a metal particle is formed which can be detected. Further the invention also relates to solutions and test-kits adapted for carrying out the above mentioned method.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 7, 1997
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Marcus J. M. Noppe, Frank J. Konings
  • Patent number: 5670300
    Abstract: A redox amplification photographic process comprises a sulfite fixing step after development-amplification and prior to peroxide bleaching.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: September 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: John Richard Fyson, Gareth Bryn Evans
  • Patent number: 5667947
    Abstract: An aqueous redox amplifier solution having a pH in the range 10.0 to 13.5 comprises:a color developing agent and/or auxiliary developing agent,hydrogen peroxide or a compound that provides hydrogen peroxide in a concentration equivalent to 0.1 to 50.0 ml/l of 30% w/w solution, anda borate or other complexing compound capable of reversibly forming a complex with hydrogen peroxide, the complexing compound being in a concentration of from 1.0 to 100.0 g/l, andwherein the relative amounts of complexing compound and hydrogen peroxide are such as to provide an amount of hydrogen peroxide effective for redox amplification and buffer the hydrogen peroxide and thereby reduce the decline in the rate of redox amplification. This solution is useful for processing color photographic elements.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: September 16, 1997
    Assignee: Eastman Kodak Company
    Inventors: Peter Jeffery Twist, Christopher John Winscom
  • Patent number: 5629139
    Abstract: Photographic elements, especially color papers, can be processed with developer, redox amplification or bleaching solutions that contain hydrogen peroxide or other oxidants. These solutions include a dissolved compound that has a hydrophobic hydrocarbon group and an additional group that enables the compound to adsorb to silver or stainless steel. The dissolved compound inhibits the catalytic effect of the metal on decomposition of the hydrogen peroxide so the processing solutions are more stable.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: May 13, 1997
    Assignee: Eastman Kodak Company
    Inventor: Peter J. Twist
  • Patent number: 5466562
    Abstract: A method of processing an imagewise exposed photographic silver halide colour material by a redox amplification method in which the colour material is treated with a colour developing agent in the presence of an oxidantin which a processor is used which comprises means for applying a relatively small volume of processing solution to an imagewise exposed silver halide material and in which the relatively small volume of solution is supplied from a reservoir of relatively large volume and, while processing, the processing solution being used is isolatable from said reservoir and,wherein either a colour developer solution without oxidant or an oxidant solution without colour developing agent is held in the reservoir andwherein the additional oxidant (or colour developing agent) respectively needed for amplification is introduced into the processing solution while it is isolated from said reservoir andwherein the used developer/amplifier so-formed is discarded into said reservoir after use where any unused introd
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: November 14, 1995
    Assignee: Eastman Kodak Company
    Inventor: Peter D. Marsden
  • Patent number: 5445925
    Abstract: A color image can be obtained from a color photographic element by multiple color development steps. The first color development is carried out in the usual manner after imagewise exposure. The second color development step is carried out after bleaching with a rehalogenating bleaching agent, and is used to develop only rehalogenated silver halide. This specific development is possible by either using a chloride rehalogenating agent in the bleaching solution, using a sulfite fixing agent before bleaching, or by fogging the element between bleaching and the second color development step.
    Type: Grant
    Filed: April 7, 1994
    Date of Patent: August 29, 1995
    Assignee: Eastman Kodak Company
    Inventors: Peter D. Marsden, Gareth B. Evans
  • Patent number: 5441853
    Abstract: A method of making a photographic color print using a photographic color material containing low levels of silver halide characterized in that,(a) after image formation and washing and/or stop bath treatment and(b) before non-uniform exposure to adventitious light,the print is uniformly exposed to a light source so that undeveloped silver halide is caused to print out uniformly. Such a uniform density is much more acceptable than a non-uniform density caused by uneven light in normal conditions.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: August 15, 1995
    Assignee: Eastman Kodak Company
    Inventors: John R. Fyson, Roland G. Willis
  • Patent number: 5439784
    Abstract: A method for replenishing an unstable photographic processing solution is disclosed, including the following replenisher solutions:(1) a color developer replenisher,(2) an oxidizing agent replenisher, and(3) a halide-containing seasoning replenisher (starter solution).The oxidizing agent is not removed from the developer/amplifier after use.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: August 8, 1995
    Assignee: Eastman Kodak Company
    Inventors: Andrew D. Grimsey, David M. Henson, Peter D. Marsden, Peter J. Twist
  • Patent number: 5418117
    Abstract: A method of processing an imagewise exposed photographic silver halide colour material by a redox amplification method in wherein colour developing solution is applied to the material in the presence of atmospheric oxygen and a hydroxylamine compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are each an alkyl or aryl groups either of which may be substituted, andwherein the colour developer solution is agitated sufficiently for redox amplification to occur.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: May 23, 1995
    Assignee: Eastman Kodak Company
    Inventor: Peter D. Marsden
  • Patent number: 5387499
    Abstract: A method of processing an imagewise exposed photographic material in a processing solution which is unstable to the extent that it deteriorates without external reaction in which the photographic material is passed through a tank containing the solution characterized in that the solution is circulated through the tank at a rate of from 0.1 to 10 tank volumes per minute.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: February 7, 1995
    Assignee: Eastman Kodak Company
    Inventors: Anthony Earle, James I. Dunlop, Edward C. T. S. Glover, Peter D. Marsden, Roger Baretll