Developer Patents (Class 430/399)
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Patent number: 5719010Abstract: The present invention relates to a treatment method for treating effluents from a photographic development process, particularly a redox amplification (RX) development process, which is operated at an alkaline pH and is buffered with a phosphate buffer, said treatment method being characterized by the addition to the effluents of a Group II or Group III metal cation which forms an aqueous insoluble or substantially insoluble phosphate salt, thereby to precipitate phosphate salt from the effluent, and to reduce the pH of the effluent.Type: GrantFiled: October 29, 1996Date of Patent: February 17, 1998Assignee: Eastman Kodak CompanyInventor: John Richard Fyson
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Patent number: 5716743Abstract: An apparatus and a process for developing radiation-sensitive, exposed printing forms into printing plates is disclosed. The apparatus has a developer pan that contains a developer bath. Individual printing form runs through the developing station of this apparatus in a running-through plane. On each side of the running-through plane there is are a first pair of transport rollers, two brushing rollers with counter-rollers and a second pair of transport rollers at the end of the developing station. Guide rollers are arranged between the first pair of transport rollers and the first brushing roller with its counter-roller, on the underside of the running-through plane. A closed vessel, filled with developing solution, is connected via a developer circuit and a pump to the developer bath. The vessel contains a temperature sensor and a measuring electrode for the electric conductivity of the developing solution.Type: GrantFiled: November 28, 1994Date of Patent: February 10, 1998Assignee: Agfa-Gevaert AGInventors: Eckehard Stein, Peter Jessen Juergensen
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Patent number: 5714307Abstract: A silver halide photographic material comprises a support, at least one silver halide emulsion layer and at least one non-light-sensitive hydrophilic colloidal layer. The silver halide emulsion layer or the hydrophilic colloidal layer contains a colorant having the absorption maximum wavelength within the infrared region of 700 to 1,100 nm. The colorant is in the form of solid particles dispersed in the silver halide emulsion layer or in the hydrophilic colloidal layer. The solid particles cannot substantially be removed by a processing solution of the silver halide photographic material. An image forming process employing the silver halide photographic material is also disclosed.Type: GrantFiled: September 22, 1995Date of Patent: February 3, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Toru Harada, Keiichi Suzuki, Shigeru Ohno, Koji Wariishi, Yoshiharu Yabuki
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Patent number: 5712081Abstract: A method of reproducing an electronically stored medical image on a hardcopy material is disclosed, said material comprising a support and on only one side thereof a silver halide emulsion layer and a hydrophilic colloid layer, wherein said emulsion layer comprises red sensitized homogeneous cubic silver chloride, silver chloroiodide, silver chlorobromide or silver chlorobromoiodide crystals having not less than 70 mole % of chloride ions and preferably not less than 90 mole %; not more than 1 mole % of iodide ions and an average crystal size of from 0.12 to 0.30 .mu.m and more preferred from 0.15 to 0.25 .mu.m; wherein said crystals are coated in an amount, expressed as an equivalent amount of silver nitrate of from 2 to 6 g per sq.m.Type: GrantFiled: March 6, 1997Date of Patent: January 27, 1998Assignee: AGFA-Gevaert, N.V.Inventors: Hieronymus Andriessen, Freddy Henderickx
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Patent number: 5707788Abstract: A method of processing a black and white silver halide photographic light sensitive material, using an automatic developing machine, the method comprising the steps of:exposing the material; anddeveloping the exposed material with developer, the developer being replenished with developer replenisher and the developer containing a dihydroxybenzene developing agent or a developing agent represented by Formula (A): ##STR1## wherein R.sub.5 and R.sub.6 independently represent an alkyl group, an amino group, an alkoxy group or an alkylthio group, or R.sub.5 and R.sub.6 combine with each other to form a ring; M represents a hydrogen atom or an alkali metal atom; k represents 0 or 1; and X represents --CO-- or --CS--,wherein the method satisfies the following inequality:1.1.ltoreq.D.sub.R /D.sub.S .ltoreq.2.5in which D.sub.S represents the developing agent concentration of a fresh developer and D.sub.R represents the developing agent concentration of a running developer in stationary state.Type: GrantFiled: October 2, 1996Date of Patent: January 13, 1998Assignee: Konica CorporationInventor: Shoji Nishio
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Patent number: 5700630Abstract: A silver halide photographic material is disclosed which comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing silver halide grains, a surface protective layer as an uppermost layer, and a hydrophilic colloid layer other than said at least one light-sensitive silver halide emulsion layer and said surface protective layer, wherein the sum of the silver amount contained in each of said at least one light-sensitive silver halide emulsion layer is from 0.8 g/m.sup.2 to 1.5 g/m.sup.Type: GrantFiled: March 1, 1996Date of Patent: December 23, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Rikio Inoue, Sumito Yamada
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Patent number: 5698381Abstract: A low volume developer tank system for the sequential processing of films that require different concentrations of bromide ions in the developer solution comprises a developer tank (2) provided with an ion exchange column (30) for removing bromide ions from solution which column can be engaged and disengaged and a plurality of reservoirs (6,8,10,12,14) arranged to feed individual replenisher components to the recirculation system (20). When processing a process C-41 compatible film the system is preferably operated with no bromide in the replenisher and removal of bromide from the developer is by overflow. When processing a film employing zero or very low bromide, the system is preferably operated with no bromide in the replenisher, substantially no overflow and removal of bromide from the developer is by ion exchange.Type: GrantFiled: September 13, 1996Date of Patent: December 16, 1997Assignee: Eastman Kodak CompanyInventor: Nigel Richard Wildman
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Patent number: 5686231Abstract: Waste developer used for the development of pigment-containing non-silver-salt photosensitive materials is disposed of by filtering through a filter which does not allow pigment particles to pass through and allows the waste developer solution to be treated to flow horizontally to the surface of the filter membrane. The solution which passed through the fiber membrane is reused as a developer. This process greatly decreases discharge of waste developer allows a long-time stabilized continuous developing process.Type: GrantFiled: September 25, 1996Date of Patent: November 11, 1997Assignee: Mitsubishi Chemical CorporationInventors: Akeo Kasakura, Takeshi Kaneda
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Patent number: 5670303Abstract: A method for altering the pH of a photographic developing solution comprises altering the hydroxide ion concentration of the solution electrolytically. The method may be employed in photographic processing apparatus comprising a photographic development stage in which a photographic material to be processed is treated with a photographic developing solution wherein the apparatus comprises means for electrolytically altering the hydroxide ion concentration of the developing solution and means for controlling the operation of electrolytically altering the hydroxide ion concentration based on the change of hydroxide ion concentration in use.Type: GrantFiled: August 28, 1995Date of Patent: September 23, 1997Assignee: Eastman Kodak CompanyInventors: Michael Ridgway, Anthony Earle
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Patent number: 5670304Abstract: A process for recycling a spent hydroquinone developer for black-and-white photographic processing which comprises the steps of determining the volume of developer, optionally filtering the developer, and reconstituting the developer, whereby the spent developer is brought back to substantially the same composition and/or level of performance as fresh developer wherein the recycled developer can be used to process black-and-white photographic materials without adverse effects.Type: GrantFiled: August 28, 1996Date of Patent: September 23, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventor: Daniel Frederick Juers
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Patent number: 5669029Abstract: A method of controlling the replenishment of a processing solution used for processing a photographic material in photographic processing apparatus, wherein replenishment chemistry is added to the processing solution and the replenishment rate is controlled using an algorithm, is characterised in that at least one of the terms of the algorithm is determined by information associated with the replenishment chemistry.Type: GrantFiled: May 3, 1996Date of Patent: September 16, 1997Assignee: Eastman Kodak CompanyInventors: John Richard Fyson, Christopher Barrie Rider, Andrew Benoy
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Patent number: 5660972Abstract: Disclosed is a method for developing silver halide photographic photosensitive materials with a developer containing a sulfite wherein said developer contains 20 mol % or more of potassium ion based on the total alkali metal ions, 0.04 mol/l or more of bromine ion or a compound represented by the following formula (I): ##STR1## wherein R.sub.1 represents a hydroxyalkyl group having 2-10 carbon atoms and R.sub.2 and R.sub.3 each represent a hydrogen atom, an alkyl group having 1-10 carbon atoms or a hydroxyalkyl group having 2-10 carbon atoms and the developer is filtered by a filter containing physical development nuclei before, during or after development of the photosensitive materials with the developer. The method is especially effective in processing using an automatic processor. According to the present method, formation of silver sludges is effectively inhibited and thus, stain of roll and belt of the processors can be prevented.Type: GrantFiled: March 14, 1995Date of Patent: August 26, 1997Assignee: Mitsubishi Paper Mills LimitedInventors: Hideto Kiyama, Tamotu Iwata, Yukinao Kawamata, Susumu Baba
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Patent number: 5658715Abstract: A silver halide color reversal photographic light-sensitive material processing method which forms a color reversal image by performing first black-and-white development, fogging process, color reversal development, and desilvering process by using a color reversal developer with a composition containing a non-dye-forming competing coupler, a silver halide fogging agent, and a carboxybenzenesulfonic acid compound and not containing hydroxylamine or its derivative.Type: GrantFiled: March 28, 1996Date of Patent: August 19, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Takashi Nakamura, Yasuhisa Ogawa
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Patent number: 5652086Abstract: Radiographic films can be processed using conventional developing agents, either in the films or in solution. The films also include from about 0.02 to about 1 mg/dm.sup.2 of thialkylene bis(ammonium salt). The solution used for development is replenished at a low rate with a chemical base as the sole developer replenishing agent. The chemical base maintains developer composition pH at from about 9 to about 11 and enables processing of films without the use of conventional developer replenishing solutions or replenishment rates.Type: GrantFiled: April 26, 1996Date of Patent: July 29, 1997Assignee: Eastman Kodak CompanyInventors: Franklin Charles Brayer, Robert Edward Dickerson, Stephen Alan Hershey, Patrick Michael Jeffries
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Patent number: 5641614Abstract: A method for continuously processing an exposed silver halide photographic light sensitive material comprises the steps of:developing said material with a developing solution, the developing solution being replenished with a first water and a solid developing composition containing a developing agent and a first sulfite according to a processing amount of said material; andfixing the developed material with a fixing solution, the fixing solution being replenished with a second water and a solid fixing composition containing a fixing agent and a second sulfite according to a processing amount of said material, and no other processing being carried out between said developing and said fixing,wherein the second sulfite is replenished in an amount of 0 to 0.05 mol per liter of the second water.Type: GrantFiled: October 30, 1995Date of Patent: June 24, 1997Assignee: Konica CorporationInventors: Akiko Yamaya, Yasunori Wada, Hirobumi Yamashita, Shoji Nishio
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Patent number: 5627005Abstract: A plurality of different materials which are required for use in a process and which are to be kept separate up to a predetermined stage in the process are supplied with each different material being encapsulated within a plurality of discrete shells, the shells serving to keep the different materials separate from each other. The shells for the different materials are distinguishable from each other so as to permit subsequent sorting of the shells into batches of shells all containing the same material.Type: GrantFiled: September 12, 1995Date of Patent: May 6, 1997Assignee: Eastman Kodak CompanyInventors: Andrew Green, Paul C. Ward
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Patent number: 5616452Abstract: A method and apparatus for processing a photosensitive material. The apparatus having at least one processing tank containing a processing solution for processing the photosensitive material, a replenishment system for replenishing the processing solution comprising a first part and a second part, the first and second parts each having independent usage rates, means for measuring the distribution of transmittance of the photosensitive material being processed by the at least one processing tank, and means for independently supplying the first and second parts to the at least one processing tank in accordance with the distribution of the transmittance of the photosensitive material being processed, the ratio of the volume of the first part to the volume of the second part to be delivered to the tank being at least 10 to 1.Type: GrantFiled: March 30, 1995Date of Patent: April 1, 1997Assignee: Eastman Kodak CompanyInventors: Ronald A. Gogle, William S. Lane
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Patent number: 5609997Abstract: There is disclosed a silver halide photographic light-sensitive material having a high sensitivity and an excellent rapid processability after exposure with a camera for a plate making. The light-sensitive material comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing silver halide grains. The sliver halide grains contain a metal compound having a cyanide ligand represented by Formula I and have been subjected to sensitization with a selenium sensitizer and spectral sensitization with a sensitizing dye represented by Formula II:[M(CN).sub.m X.sub.6-m ].sup.n (I)wherein M represents iron, rhenium, osmium, ruthenium, or iridium; X represents a bridged ligand; m is 4, 5 or 6; and n is -2, -3 or -4: ##STR1## wherein Z represents a group of atoms necessary to form an oxazole nucleus, a benzoxazole nucleus or a naphthooxazole nucleus; R.sub.1 represents an optionally substituted alkyl group; R.sub.Type: GrantFiled: July 18, 1994Date of Patent: March 11, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuhiro Okamoto, Tsutomu Arai
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Patent number: 5595860Abstract: A process for processing a silver halide color photographic material, which comprises developing in a color developer substantially free of sulfite ion and containing an aromatic primary amine color developing agent and at least one phosphorus compound selected from the group consisting of compounds represented by formula (I), formula (I-a) and formula (I-b) and internal salts thereof: ##STR1## wherein R, R' and R" each represents an aliphatic hydrocarbon group or an aryl group; A represents a divalent or trivalent linking group; M, M' and M" each represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an ammonium or a quaternary ammonium; and m represents 2 when M, M' or M" is monovalent and m is 1 when M, M' and M" is divalent.Type: GrantFiled: April 27, 1995Date of Patent: January 21, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Masakazu Yoneyama
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Patent number: 5591561Abstract: A method for processing a black-and-white silver halide photographic light-sensitive material comprising the steps of(1) developing an imagewise exposed black-and-white silver halide photographic light-sensitive material with a developing solution in the presence of a complex forming compound,(2) fixing with a fixing solution,(3) washing or stabilizing with water or a stabilizing solution, respectively, and(4) drying the washed or stabilized light-sensitive material,wherein the light-sensitive material comprises a support and at least one silver halide emulsion layer and optionally one or more non-light-sensitive hydrophilic colloid layers provided on a first side of the support, and a layer provided on the second side opposite to the fist side of the support, and at least one of the silver halide emulsion layer and the non-light sensitive hydrophilic layer adjacent to the silver halide emulsion layer provided on the first side of the support contains a hydrazine compound, at least one of the silver halide emType: GrantFiled: February 9, 1996Date of Patent: January 7, 1997Assignee: Konica CorporationInventors: Takeo Arai, Junichi Fukawa
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Patent number: 5591567Abstract: A method of processing a photographic light-sensitive material comprising a backing layer on a support opposite an emulsion layer comprises the steps of exposing the material, developing the exposed material with developer, the developer being replenished with developer replenisher in an amount of not more than 200 ml per m.sup.2 of the material, and fixing the developed material,wherein the backing layer contains in an amount of 5 to 200 mg/m.sup.Type: GrantFiled: March 29, 1995Date of Patent: January 7, 1997Assignee: Konica CorporationInventors: Hideki Komatsu, Shoji Nishio
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Patent number: 5580706Abstract: Disclosed is a method for processing a silver halide photographic material, having on one side of a support a hydrophobic polymer layer as the outermost layer and on the side opposite an emulsion layer, by means of an automatic developing apparatus. The apparatus has a drying operation part which is equipped with two or more hot rollers arranged so that the silver halide photographic material may be wrapped partly around each of the hot rollers in turn and the contact between the rollers and the material may alternate between the front surface and the back surface of the photographic material, whereby the moisture in the photographic material evaporates from the surface areas when they are not in contact with the hot rollers. This method results in improvements in the drying characteristics of the photographic material and the transportation characteristics of the automatic developing apparatus.Type: GrantFiled: July 6, 1995Date of Patent: December 3, 1996Assignee: Fuji Photo Film Co., Ltd.Inventor: Kunio Ishigaki
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Patent number: 5578430Abstract: A method of processing an imagewise exposed photographic silver halide material in a machine containing a number of non-replenished processing tanks or processing tanks that are supplied from a non-replenished source, the method wherein the silver halide comprises at least 95% by weight silver chloride and processing in each tank is carried out with sufficient agitation to avoid the need for replenishment.Type: GrantFiled: May 8, 1995Date of Patent: November 26, 1996Assignee: Eastman Kodak CompanyInventor: John R. Fyson
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Patent number: 5578429Abstract: A method of imagewise exposing and processing a photographic silver halide color material in a machine containing a number of non-replenished processing tanks or processing tanks that are supplied from a non-replenished source,the method comprising increasing the exposure time automatically by a predetermined factor related to the area of photographic material already processed and the volume of the non-replenished processing solution.Type: GrantFiled: May 8, 1995Date of Patent: November 26, 1996Assignee: Eastman Kodak CompanyInventor: John R. Fyson
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Patent number: 5578431Abstract: A method of processing an imagewise exposed photographic silver halide color material in a machine containing a number of processing tanks or processing tanks which are supplied from a non-replenished source, the method comprising increasing the temperature of at least one of the tanks automatically by a predetermined amount related to the area of photographic material already processed and optionally, the time of treatment in said at least one processing tank is increased by a predetermined factor related to the area of photographic material already processed and the volume of the non-replenished processing solution.Type: GrantFiled: May 8, 1995Date of Patent: November 26, 1996Assignee: Eastman Kodak CompanyInventor: John R. Fyson
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Patent number: 5573895Abstract: A recycling method for photographic processing waste liquid is disclosed. The photographic processing waste liquid is subjected to evaporative concentration under a reduced pressure of not higher than 700 mmHg and at a temperature of not higher than 90.degree. C. The resulting distillate is used as a solvent for photographic processing agents or as an evaporation compensator for processing tanks of an automatic processing machine.Type: GrantFiled: June 7, 1995Date of Patent: November 12, 1996Assignee: Konica CorporationInventors: Yoshimasa Komatsu, Masao Ishikawa, Moeko Hagiwara, Kenji Ishida, Hiroshi Yoshimoto, Shinsaku Nagaoka
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Patent number: 5573896Abstract: A method of processing an imagewise exposed silver halide photographic element comprising developing and desilvering the photographic element in a low volume thin tank processor wherein the processor operates at 15% or less of maximum production capacity.Type: GrantFiled: April 3, 1995Date of Patent: November 12, 1996Assignee: Eastman Kodak CompanyInventors: Jerel R. Carli, David G. Foster, Edgar P. Gates, David L. Patton, John H. Rosenburgh, Sheridan E. Vincent
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Patent number: 5571660Abstract: A method of forming an image is disclosed, comprising imagewise-exposing a silver halide photographic light sensitive material and developing the exposed photographic material to form a high contrast image, wherein said silver halide photographic material contains a spectral sensitizing dye represented by the following formula [S], and wherein said photographic material is developed with a developer having a pH of 10.9 or less, said developer being replenished by a developer-replenishing solution having a pH value of 10.9 or less in an amount of 300 ml or less per m.sup.2 of the photographic material. The photographic material further contains a hydrazine compound and a nucleation-accelerating agent.Type: GrantFiled: September 15, 1995Date of Patent: November 5, 1996Assignee: Konica CorporationInventors: Hirohide Ito, Takeo Arai
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Patent number: 5569575Abstract: A method of processing, by use of an automatic processor, a silver halide photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer comprising the steps of developing, fixing, washing and drying the photographic material, wherein a developer has a pH of 10.4 or more and is replenished at a rate of 50 to 220 ml/m.sup.2, and wherein the silver halide emulsion layer contains a spectral sensitizing dye selected from carbocyanine, dicarbocyanine and merocyanine dyes.Type: GrantFiled: February 10, 1995Date of Patent: October 29, 1996Assignee: Konica CorporationInventor: Hirobumi Yamashita
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Patent number: 5565308Abstract: A method of processing an imagewise exposed black and white silver halide photographic element comprising developing and desilvering the photographic element in a low volume thin tank processor wherein the processor operates at 15% or less of maximum production capacity.Type: GrantFiled: April 10, 1995Date of Patent: October 15, 1996Assignee: Eastman Kodak CompanyInventors: Jerel R. Carli, David G. Foster, Edgar P. Gates, David L. Patton, John H. Rosenburgh, Sheridan E. Vincent
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Patent number: 5556736Abstract: A method for processing an exposed silver halide color photographic photosensitive material is disclosed, which comprises the step of developing the exposed material with a color developer in a color development tank of an automatic developing apparatus, the developer in the developer tank being replenished with replenishing water and a solid color developing composition comprising a p-phenylenediamine color developing agent having a water-solubilizing group, wherein the replenishing amount of the water is 30 to 75 ml per m.sup.2 of the material processed and the replenishing amount of the color developing agent is 0.024 to 0.066 mol per liter of the replenishing amount of the water.Type: GrantFiled: October 19, 1994Date of Patent: September 17, 1996Assignee: Konica CorporationInventors: Tsuyoshi Haraguchi, Ichiro Tsuchiya
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Patent number: 5556737Abstract: The present invention relates to a method for forming a color image in a silver halide color photographic material comprising a reflective support having coated thereon a composition comprising a polyester resin and a white pigment mixed and dispersed in said polyester resin, at least one yellow color forming silver halide photosensitive emulsion layer, at least one magenta color forming silver halide photosensitive emulsion layer, and at least one cyan color forming silver halide photosensitive emulsion layer on said support, each of said yellow, magenta and cyan color forming silver halide photosensitive emulsion layers having silver halide grains containing 95 mol % or more of silver chloride, wherein said method comprises the steps of exposing imagewise said silver halide color photographic material to light, developing said imagewise exposed silver halide color photographic material in a color developing solution, subjecting said developed silver halide color photographic material to desilvering by bleacType: GrantFiled: November 30, 1993Date of Patent: September 17, 1996Assignee: Fuji Photo Film Co., Ltd.Inventor: Koichi Nakamura
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Patent number: 5541027Abstract: A method is disclosed in converting silver halide to silver by use of a developer containing two compounds which can be titrated in a single potentiometric titration with silver nitrate and based on the titration an additional quantity of the two compounds are added to depleted developer.Type: GrantFiled: December 14, 1994Date of Patent: July 30, 1996Assignee: E. I. Du Pont de Nemours and ComapnyInventor: Peter Wuelfing, Jr.
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Patent number: 5534389Abstract: Disclosed are a method for processing a black-and-white light-sensitive silver halide photographic material containing at least one kind of a tetrazolium compound or a hydrazine compound with a developing solution containing a polyhydroxybenzene type developing agent, wherein the developing solution is a developing solution prepared by using a solid processing agent, a solid processing agent for a black-and-white light-sensitive silver halide photographic material containing a tetrazolium compound or a hydrazine compound comprising a polyhydroxybenzene type developing agent and a solid processing agent for a black-and-white light-sensitive silver halide photographic material containing a tetrazolium compound or a hydrazine compound comprising a thiosulfate fixing agent and water in an amount of 300% or less based on an amount of the thiosulfate fixing agent.Type: GrantFiled: July 8, 1994Date of Patent: July 9, 1996Assignee: Konica CorporationInventors: Takeo Arai, Tadashi Sekiguchi, Takeshi Habu, Shiyouji Nishio, Hiroyuki Usiroyama, Kenichi Tanaka, Akira Kobayashi
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Patent number: 5523196Abstract: Disclosed is a method for developing a silver halide photographic light-sensitive material with a developer having a pH within the range of 9.5 to 10.7 through an automatic processor, wherein said silver halide photographic light-sensitive material comprises a support and thereon, at least one silver halide emulsion layer comprising silver halide grains containing at least 60 mol % of silver chloride, comprising the steps of:replenishing a first developer replenishing-solution having lower activity than a starter for a developer; andreplenishing a second developer replenishing-solution having the substantially same activity as said starter for a developer.Type: GrantFiled: October 13, 1994Date of Patent: June 4, 1996Assignee: Konica CorporationInventors: Mariko Iwashita, Takeshi Sampei
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Patent number: 5521055Abstract: In photographic processing apparatus, by-products are produced due to the chemical reactions which occur during the processing of photographic materials. It is known to remove some of these by-products in accordance with the area of photographic material processed and a knowledge of the average level of production of the by-products. This leads to inaccuracies in maintaining a fixed level of the by-products in the processing solutions. Described herein is a method of controlling a subsystem which removes by-products from the processing solutions by using data relating to the exposure given to a photographic material in the printing stage of the processing apparatus to calculate the amount of by-products produced so that they can be exactly removed from the processing solutions.Type: GrantFiled: February 1, 1994Date of Patent: May 28, 1996Assignee: Eastman Kodak CompanyInventor: Christopher B. Rider
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Patent number: 5518845Abstract: A method and apparatus for controlling the rate of replenishment of chemical solutions in a photographic processing apparatus used for copying a photographic negative having a transmittance onto photographic material includes a number of steps and an apparatus for carrying out those steps. First, light is exposed onto the photographic negative to form a latent image of the photographic negative on the photographic material. Next, the latent image formed on the photographic material is developed by placing the photographic material in chemical solutions. The photographic material reacts with the chemical solutions to form an amount of dyes on the developed photographic material. The exposure given to the photographic material is measured and then the amount of dyes on the developed photographic material is obtained from the measured exposure.Type: GrantFiled: October 20, 1994Date of Patent: May 21, 1996Assignee: Eastman Kodak CompanyInventor: Christopher B. Rider
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Patent number: 5510231Abstract: A method for processing a silver halide photographic light-sensitive material is disclosed which comprises the steps of:exposing the light-sensitive material;developing the exposed material with a developer; andreplenishing the developer with a repleniser developer in amount of 200 ml or less per m.sup.2 of the material, said developer and replenisher developer are prepared by dissolving in water a solid photographic developing composition comprising a developing agent and a compound selected from the group consisting of compounds represented by the following ##STR1## wherein R.sub.1 and R.sub.2 independently represent a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a hydroxy group, a mercapto group, a carboxyl group, a sulfo group, a phosphono group, an amino group, a nitro group, a cyano group, a halogen atom, an alkoxy group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, a sulfamoyl group or a heterocyclic group, provided that R.sub.1 and R.sub.Type: GrantFiled: April 22, 1994Date of Patent: April 23, 1996Assignee: Konica CorporationInventors: Hideki Komatsu, Shoji Nishio
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Patent number: 5506092Abstract: A method of developing with developer an exposed black and white silver halide photographic light-sensitive material is disclosed, the developer containing a compound represented by the following Formula (1a) , (1b) , (2) or (3) and a compound represented by the following Formula (4) or (5): ##STR1##Type: GrantFiled: November 30, 1994Date of Patent: April 9, 1996Assignee: Konica CorporationInventors: Wataru Ishikawa, Takeshi Sampei
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Patent number: 5503965Abstract: The present invention improves the running stability of a developer comprising an ascorbic acid instead of hydroquinone as a developing agent. The present invention provides a process for development of a black-and-white silver halide photographic material, which comprises use of a development replenisher for black-and-white silver halide photographic material comprising an ascorbic acid and/or derivative thereof which has a pH value of at least 0.5 higher than that of the development starting solution.Type: GrantFiled: September 27, 1994Date of Patent: April 2, 1996Assignee: Fuji Photo Film Co., Ltd.Inventor: Eiichi Okutsu
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Patent number: 5498511Abstract: A silver halide photographic material is disclosed, which comprises a support having thereon at least one silver halide emulsion layer, wherein the swelling amount of the hydrophilic colloid layers including the light-sensitive silver halide emulsion layer and a protective layer coated on at least one side of the support is not more than 10 .mu.m in thickness and at least 60% of the total projected area of the total silver halide grains in at least one silver halide emulsion layer includes tabular silver halide grains having a Cl.sup.- content of at least 20 mole %, a {100} plane as the major plane, a thickness of 0.35 .mu.m or less, and an aspect ratio (diameter/thickness) of at least 2, and further a developing process for developing the above silver halide photographic material with a developer containing ascorbic acid or the derivative thereof is disclosed.Type: GrantFiled: October 21, 1994Date of Patent: March 12, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Yamashita, Mitsuo Saitou, Tomoyuki Ozeki, Tatsuya Ishizaka
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Patent number: 5492796Abstract: A silver halide color photographic material having on a support at least one light-sensitive silver halide emulsion layer, wherein the color photogrphic material contains a nondiffusing coupler represented by formula (I):Cp--(LINK).sub.n --N(R.sub.1)--Ar(OR.sub.2)--X (I)wherein Cp represents a coupler residue (residual group) which can undergo coupling reaction with the oxidation product of a color developing agent to release --(LINK).sub.n --N(R.sub.1)--Ar(OR.sub.2)--X; LINK represents a group which can release --N(R.sub.1)--Ar(OR.sub.2)--X after cleavage of bond to Cp; n represents 0 or an integar of 1 or 2, Ar represents an arylene group; X represents an amino group, an alkoxy group or a hydroxyl group; R.sub.1 represents a hydrogen atom or a substituent; and R.sub.Type: GrantFiled: October 26, 1994Date of Patent: February 20, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Masashi Ogiyama, Seiji Ichijima
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Patent number: 5491048Abstract: A process for removing tin from seasoned photographic color developers containing tin as stannous or stannate complex ions, comprising the steps of:(a) collecting seasoned photographic color developer containing tin;(b) treating the collected developer with a resin having a chelating group selected from the group consisting of diphosphonic acid, amidoxime and thiol, thereby removing tin from the composition.Type: GrantFiled: February 21, 1995Date of Patent: February 13, 1996Assignee: Eastman Kodak CompanyInventors: Ernest R. Anderson, Stephen N. Lowery
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Patent number: 5480768Abstract: A method for processing an exposed silver halide photographic light-sensitive material is provided, comprisingdeveloping the photographic material with a developer,fixing the photographic material with a fixer,stabilizing the photographic material with a stabilizer, andreplenishing at least one of the developer, the fixer and the stabilizer by supplying a processing composition,wherein the processing composition is a solid composition, meeting the following requirement,2.ltoreq.S/R.ltoreq.70wherein S is a dissolving time (in minutes) of a unit by weight of the solid composition supplied and R is an amount (in m.sup.2) of the photographic material processed per unit weight of the solid composition supplied.Type: GrantFiled: February 14, 1994Date of Patent: January 2, 1996Assignee: Konica CorporationInventors: Kenji Ishida, Shigeharu Koboshi
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Patent number: 5466563Abstract: A method of processing silver halide photographic material comprises the steps of passing a belt for conveying an imagewise exposed silver halide photographic material through the processing tanks, carrying the silver halide photographic material on the belt and processing the silver halide photographic material conveyed by the belt in the processing tanks while replenishing the tanks with constant amounts of replenishing solutions respectively, wherein the method comprises detecting a level of developing solution in development tank and supplying the development tank with an additional fresh developing tank solution or overflow solution from the development tank when said level of developing solution in the tank falls to a predetermined level. This method makes it possible to reduce an amount of the processing solution waste to be drained from the processing machine.Type: GrantFiled: November 26, 1991Date of Patent: November 14, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Bryan A. I. Snelling
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Patent number: 5466562Abstract: 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 introdType: GrantFiled: July 15, 1994Date of Patent: November 14, 1995Assignee: Eastman Kodak CompanyInventor: Peter D. Marsden
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Patent number: 5464730Abstract: Disclosed is a method of developing a transmission black-and-white silver halide photographic material with an automatic processor, in which a developer having a bromide ion concentration of 0.01 mol/liter or less and having a pH value of 9.8 or less is used with replenishment of the developer being in an amount of about 200 ml or less per m.sup.2 of the material being processed. Though the amount of the replenisher to the developer used is small in the method, the photographic properties of the processed material are stable and the processed material is fogged little.Type: GrantFiled: April 22, 1994Date of Patent: November 7, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Eiichi Okutsu, Takashi Toyoda, Tadashi Ito
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Patent number: 5460926Abstract: A method for developing light-sensitive silver halide photographic materials, in a compact automatic developing machine, comprising transporting the light-sensitive silver halide photographic materials to a processing tank which contains a processing solution for processing an exposed light-sensitive silver halide photographic material. The processing tank includes a processing portion, and a receiving portion for receiving a solid processing agent. A solid processing agent is supplied to the receiving portion of the processing tank based on information on the amount of processing of the light-sensitive silver halide photographic materials. The solid processing agent is preferably in the form of tablets which contain all components necessary to process the light-sensitive silver halide photographic material. The processing solution is circulated between the processing portion and the receiving portion at a flow rate of not less than 0.5 times the processing tank volume per minute.Type: GrantFiled: July 13, 1994Date of Patent: October 24, 1995Assignee: Konica CorporationInventors: Yoshimasa Komatsu, Shigeharu Koboshi, Masao Ishikawa
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Patent number: 5457009Abstract: A method of processing a photographic material having, in the backing layer, at least one mercapto pyrimidine compound of formula (I), with an automatic developing machine, where the amount of the replenisher of the developer per unit area of the material being processed is reduced. The processed materials have stable photographic properties and few silver stains. The mercapto pyrimidine has the following structure ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a hydroxyl group, a mercapto group, a carboxyl group, a sulfo group, a phosphono group, a nitro group, a cyano group, a halogen atom, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, a sulfamoyl group or an alkoxy group. The sum of the carbon atoms contained in R.sub.1 and R.sub.2 is from 2 to 20. R.sub.1 and R.sub.2 may be bonded to each other to form a ring structure.Type: GrantFiled: March 17, 1994Date of Patent: October 10, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Takashi Toyoda, deceased, Eiichi Okutsu, Kouta Fukui
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Patent number: H1608Abstract: A method of processing with a developer a silver halide photographic light-sensitive material is disclosed, the material comprising a support and provided thereon, a silver halide emulsion layer comprising silver halide grains having not less than 90 mol % chloride, the emulsion layer or a hydrophilic colloid layer adjacent to the emulsion layer containing a tetrazolium compound, or a hydrazine derivative, and replenisher for developer being supplied to the developer in an amount of not more than 200 ml per m.sup.2 of the material processed, wherein the developer contains a carbonate salt in an amount of not less than 0.2 mol/liter.Type: GrantFiled: September 27, 1994Date of Patent: November 5, 1996Assignee: Konica Corp.Inventors: Shoji Nishio, Hideki Komatsu