Infectious Developer Composition Patents (Class 430/268)
  • Patent number: 8372751
    Abstract: A method for fabricating a semiconductor device includes etching a substrate to form a body separated by a trench, forming liner layers that cover sidewalls of the body, forming a sacrificial layer that fills the trench and exposes an upper sidewall of each liner layer, forming a hard mask pattern that covers a first one of the liner layers having the exposed upper sidewalls, forming a barrier layer to be selectively grown over the exposed upper sidewalls of a second one of the liner layers, removing the hard mask pattern, removing a part of the sacrificial layer to expose a lower sidewall of a first one of the liner layers, and removing the lower sidewall of the first one of the liner layers to form a side contact.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: February 12, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventor: Sung-Eun Park
  • Publication number: 20030091926
    Abstract: A dry film photoresist having a glass transition temperature (Tg) above room temperature. The dry film photoresist is tack free. An artwork may be placed directly on the photoresist without concern that the artwork may stick to the dry film photoresist or become contaminated with photoresist. The dry film photoresist may be laminated on a support sheet and wound into a roll without concern that the photoresist will stick to the backside of the support sheet. The dry film photoresist also has reduced cold flow problems.
    Type: Application
    Filed: December 11, 2002
    Publication date: May 15, 2003
    Applicant: Shipley Company, L.L.C.
    Inventor: James G. Shelnut
  • Patent number: 6479198
    Abstract: A silver halide light-sensitive material comprises a support and a silver halide gelatin emulsion layer. The silver halide gelatin emulsion layer or an optionally provided hydrophilic layer contains a tanning developing agent. According to the first embodiment of the present invention, the tanning developing agent has a molecular structure in which two to six benzenediol or benzenetriol rings are connected with a linking group. According to the second embodiment of the invention, the tanning developing agent consists of a polymer having side chains containing benzenediol or benzenetriol rings. According to the third embodiment of the invention, the tanning developing agent consists of a benzenediol or benzenetriol ring having an aliphatic substituent group having 5 to 40 carbon atoms or an aromatic substituent group having 7 to 40 carbon atoms. A tanning developing solution and a lithographic printing plate are also disclosed.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: November 12, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naonori Makino, Kaku Sakata
  • Publication number: 20010051314
    Abstract: A silver halide light-sensitive material comprises a support and a silver halide gelatin emulsion layer. The silver halide gelatin emulsion layer or an optionally provided hydrophilic layer contains a tanning developing agent. According to the first embodiment of the present invention, the tanning developing agent has a molecular structure in which two to six benzenediol or benzenetriol rings are connected with a linking group. According to the second embodiment of the invention, the tanning developing agent consists of a polymer having side chains containing benzenediol or benzenetriol rings. According to the third embodiment of the invention, the tanning developing agent consists of a benzenediol or benzenetriol ring having an aliphatic substituent group having 5 to 40 carbon atoms or an aromatic substituent group having 7 to 40 carbon atoms. A tanning developing solution and a lithographic printing plate are also disclosed.
    Type: Application
    Filed: February 1, 2001
    Publication date: December 13, 2001
    Inventors: Naonori Makino, Kaku Sakata
  • Patent number: 5688635
    Abstract: There is described a photographic developing solution which comprises as an image toning agent a compound of formula I: ##STR1## where Ar is an aromatic or heteroaromatic ring which may be substituted, in a concentration of at least 0.00035 moles/liter.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: November 18, 1997
    Assignee: Ilford Limited
    Inventors: Michael John Parker, Anthony Martin Lannon
  • Patent number: 5545508
    Abstract: A process for forming a black-and-white high contrast negative photographic silver image by development of a silver halide photographic element with an aqueous alkaline photographic developer composition comprising a dihydroxybenzene developing agent, an auxiliary superadditive developing agent, an antifogging agent, an antioxidant compound, a combination of buffering agents and a sequestering agent, characterized by the fact that: a) the auxiliary developing agent is an aminophenol compound, b) the combination of buffering agents comprises at least a first buffering agent represented by carbonate compounds and at least a second buffering agent represented by phosphate compounds, the total amount of said first buffering agent and said second buffering agent being at least 35 grams per liter, band c) the pH of said aqueous alkaline photographic developer composition is in the range 9.0 to 11.0.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: August 13, 1996
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Carlo Marchesano, Elda Moizo, Filippo Faranda
  • Patent number: 5460919
    Abstract: A process of forming a super high-contrast negative image is disclosed, which comprises the steps of imagewise exposing a negative-working silver halide photographic material comprising a support having thereon one or more hydrophilic colloidal layers, at least one of the one or more hydrophilic colloidal layers being a negative-working silver halide emulsion layer, and then developing the photographic material with a developer containing an aminophenol derivative developing agent and a reductone compound in the existence of an organic compound having a negative reduction potential. A negative-working silver halide photographic material and a photographic developer being used for the image-forming process are also disclosed.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: October 24, 1995
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Naoki Obi, Yasuhiko Kojima, Yasuo Shigemitsu, Jun Takeuchi, Kiyoshi Suematsu
  • Patent number: 5389502
    Abstract: An alkaline, aqueous black-and-white photographic developer and developing method. The developer includes hydroquinone developing agent, auxiliary developing agent, dialdehyde hardener, organic antifoggant, sulfite antioxidant, buffer, and sequestering agent selected from the group consisting of oligomeric carboxylic acid substituted hydrocarbons.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: February 14, 1995
    Assignee: Eastman Kodak Company
    Inventors: Alan S. Fitterman, Jean M. Buongiorne
  • Patent number: 5372911
    Abstract: A process of forming a super high-contrast negative image is disclosed, which comprises the steps of imagewise exposing a negative-working silver halide photographic material comprising a support having thereon one or more hydrophilic colloidal layers, at least one of the one or more hydrophilic colloidal layers being a negative-working silver halide emulsion layer, and then developing the photographic material with a developer containing an aminophenol derivative developing agent and a reductone compound in the existence of an organic compound having a negative reduction potential. A negative-working silver halide photographic material and a photographic developer being used for the image-forming process are also disclosed.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: December 13, 1994
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Naoki Obi, Yasuhiko Kojima, Yasuo Shigemitsu, Jun Takeuchi, Kiyoshi Suematsu
  • Patent number: 5275915
    Abstract: A developer for light-sensitive material capable of processing in common a negative-working light-sensitive lithographic printing plate and a positive-working light-sensitive printing plate as well as a developing agent-containing type silver halide photographic material, is disclosed. The developer comprises an alkali agent, an anionic surface active agent, an antifoggant for a silver halide photographic material, and an alkylene oxide addition product (molecular weight of from 130 to 1200) of an aromatic amine or an aralkyl amine, and has pH of the range of from 11.5 to 13.5.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: January 4, 1994
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Yasuhiko Kojima, Yasuo Shigemitsu
  • Patent number: 5266442
    Abstract: A method for the production of a silver image with improved contrast by the development of an image-wise exposed photographic silver halide emulsion layer material with a developer liquid containing a hydroquinone in the presence of an auxiliary developing agent, wherein said developer liquid is applied to said photographic material containing silver halide grains that have been chemically sensitized with organic thiosulphonic acid anions in combination with a gold sensitizer in the absence of thiosulphate ions.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: November 30, 1993
    Assignee: Agfa-Gevaert N.V.
    Inventor: Richard A. Ooms
  • Patent number: 5254436
    Abstract: The present invention provides a method for image formation which is free from the problems such as uneven development and pepper fog and can give photographic characteristics of extremely high contrast negative tone using a stable developer and which comprises developing a silver halide photographic light-sensitive material in the presence of a compound represented by the following formula (I): ##STR1## wherein R.sub.1 represents an alkyl group of 1-8 carbon atoms or a cycloalkyl group having 4-8 carbon atoms in the ring, R.sub.2, R.sub.3 and R.sub.4 may be identical or different and each represents a hydrogen atom, an alkyl group, an aralkyl group, an aryl group or a heterocyclic group with a proviso that they cannot be simultaneously hydrogen atoms, R.sub.2 and R.sub.3 may link to each other to form a ring structure, and at least one hydroxy group is present in the substituents R.sub.2, R.sub.3 and R.sub.4.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: October 19, 1993
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Masao Koga, Minoru Ohashi
  • Patent number: 5147767
    Abstract: An environmentally-safe, non-toxic non-hydroquinone and non-alkali metal hydroxide containing photographic developer composition is provided comprising a developer selected from the group consisting of 2-keto gluconic acid and derivatives thereof, together with a sulfite, an alkali metal carbonate, and a 3-pyrzaolidone developer compound.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: September 15, 1992
    Inventor: Audenried W. Knapp
  • Patent number: 5141843
    Abstract: A developer liquid suited for use in development of photographic silver halide emulsion layer materials which liquid contains:1) hydroquinone or a substituted hydroquinone as sole developing agent or said hydroquinone as main developing agent in combination with an auxiliary developing agent in an amount less than 10 mole % with respect to the main developing agent,2) an inorganic compound yielding free sulphite ions in an amount of at least 5 grams per liter,3) an organic anti-fogging agent corresponding to the following general formula (Z): ##STR1## wherein: X.sup.2 represents an alkyl group or an aryl group including said groups in substituted form or an amino group including said group in substituted form;the amount of anti-fogging agent being in the range of 50 mg to 1 g per liter,4) a polymer containing a plurality of alkylene oxide units, and5) the necessary alkaline material to have in said liquid a pH of at least 10.5. Optional additives can also be present in the developing liquid.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: August 25, 1992
    Assignee: AGFA-Gevaert N. V.
    Inventors: Richard A. Ooms, Piet Kok, Jean-Marie O. Dewanckele
  • Patent number: 5118583
    Abstract: The present invention provides a processing composition which is used for lithographic printing plate where silver image is used as ink receptive area for enhancing ink receptivity of the silver image. This composition contains an organic compound having two or more mercapto groups or thion groups and, in combination therewith, an aromatic sulfonic acid formalin condensate, an anionic surfactant having a polyoxyethylene group, an aromatic carboxylic acid, a hydrosulfite compound, a water-soluble polymer having a carboxyl group and having a number-average molecular weight of about 20,000 or less, a hydroxyaryl fatty acid, or an organic disulfide compound. If this composition additionally contains an oxidizing agent, it can further improve printing endurance of the printing plate.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: June 2, 1992
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Toshiro Kondo, Hidetoshi Miura, Kyonosuki Yamamoto, Sukeaki Date
  • Patent number: 5066571
    Abstract: A method for processing a silver halide color photosensitive material is disclosed.The method comprises developing a color photographic light-sensitive material composed of a support having thereon at least one light-sensitive silver halide emulsion layer containing a silver halide comprising at least 98 mol % silver chloride;in a color developer solution comprising a primary amine color developing agent, and having a chloride ion concentration of from 4.times.10.sup.-2 to 1.times.10.sup.-1 mol/l, and a bromide ion concentration of from 5.times.10.sup.-5 to 5.times.10.sup.-4 mol/l.When used in rapid processing methods, the method according to the invention prevents fogging streaks, and provides high maximum density and low minimum density images.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: November 19, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuaki Yoshida, Takatoshi Ishikawa
  • Patent number: 5013633
    Abstract: A method of preparing a color proof from a silver halide color photographic light-sensitive material and a black-and-white halftone dot image is disclosed, wherein said light-sensitive material has on a support the photographic component layers including silver halide emulsion layers each having different spectral sensitivities, and one of said silver halide emulsion layers comprises a magenta coupler represented by Formula M-I; ##STR1## wherein Z represents a group of non-metal atoms necessary to form a nitrogen-containing heterocyclic ring including a substituted one; X represents one selected from the group consisting of a hydrogen atom and a group capable of splitting off upon a reaction with an oxidized product of a developer; and R represents one selected from the group consisting of a hydrogen atom and a substituent.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: May 7, 1991
    Assignee: Konica Corporation
    Inventors: Tomomi Yoshizawa, Keiji Ogi, Nariko Kimura
  • Patent number: 5004670
    Abstract: A high-contract development process is disclosed, which comprises developing a silver halide photographic material containing at least a hydrazine derivative with a developer having a pH of from 10.0 to 12.3 and containing(a) a dihydroxybenzene developing agent,(b) at least 0.3 mol/liter of a sulfite, and(c) at least one of compounds represented by formulae (I-1), (I-2), (I-3) or I-4); ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 each represents an alkyl group having from 1 to 5 carbon atoms or a hydroxyalkyl group, provided that R.sub.1 and R.sub.2, or R.sub.3 R.sub.4 may combine with each other to form a nitrogen-containing heterocyclic ring; and A and D each represents a substituted or unsubstituted alkylene group, ##STR2## wherein R.sub.6, R.sub.7, R.sub.8, and R.sub.9 =each represents an alkyl group having from 1 to 5 carbon atoms or a hydroxyalkyl group, provided that R.sub.6 and R.sub.7, or R.sub.8 and R.sub.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: April 2, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Eiichi Okutsu, Mitsunori Hirano, Morio Yagihara
  • Patent number: 4994345
    Abstract: A method for making a color proof in a photo-mechanical process. The method comprises a step for exposing a silver halide color photographic light-sensitive material to light through a black-and-white halftone dot image, and a step for developing said silver halide color photographic light-sensitive material with a color developer. The photographic material is comprised of at least three silver halide emulsion layers which are different from each other in spectral sensitivity thereof, and at least one of these silver halide emulsion layers contains a specific yellow coupler and the color developer contains a specific color developing agent. A halftone color image having a color tone similar to that of image printed with printing inks can be obtained by the simplified process.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: February 19, 1991
    Assignee: Konica Corporation
    Inventors: Tomomi Yoshizawa, Keiji Ogi, Nariko Kimura
  • Patent number: 4988603
    Abstract: A processing method for silver halide photographic material is disclosed, which stably provides images having high contrast and high dot quality with little degradation in sensitivity by rapid processing.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: January 29, 1991
    Assignee: Konica Corporation
    Inventors: Yasuhiko Takamuki, Takeshi Habu, Junichi Fukawa
  • Patent number: 4965169
    Abstract: A method for forming a high contrast negative image comprising the steps of:(a) imagewise exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, said emulsion layer or other hydrophilic colloid layer containing at least one hydrazine derivative; and(b) developing said exposed silver halide photographic material in an developer solution containing:(1) a dihydroxybenzene developing agent;(2) at least one auxiliary developing agent selected from a 1-phenyl-3-pyrazolidone auxiliary developing agent and a p-aminophenol auxiliary developing agent;(3) at least 0.3 mol per liter of a sulfite; and(4) at least one compound represented by formula (I): ##STR1## wherein Y represents a group capable of adsorbing to silver halide; A represents a divalent linking group; B represents an amino group, an ammonium group or a nitrogen containing heterocyclic group; m is 1, 2 or 3; and n is 0 or 1; to form a high contrast negative image.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: October 23, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mitsunori Hirano, Masato Hirano, Morio Yagihara, Hisashi Okada
  • Patent number: 4929535
    Abstract: This invention is a process of quickly forming high contrast negative images, which are useful for photomechanical process, by development-processing a silver halide photographic material containing a hydrazine derivative in at least one of silver halide emulsion layer(s) and other hydrophilic colloid layer(s) after imagewise exposure in the existence of a compound represented by general formula (A); ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each represents an alkyl group, a cycloalkyl group, an aryl group, an alkenyl group, a cycloalkenyl group, or a heterocyclic ring residue, these groups may have a substituent; m represents an integer; L represents an m-valent organic group bonded to the P atom through a carbon atom; n represents an integer of 1 to 3; and X represents an n-valent anion; said X may be bonded to L; using a stable processing solution.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: May 29, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiro Takahashi, Kimitaka Kameoka, Yoshio Inagaki
  • Patent number: 4925832
    Abstract: A silver halide photographic light sensitive emulsion containing a hydrazine of the general formulaR.sup.3 -NR.sup.4 -NR.sup.5 -G-X (I)in whichR.sup.3 represents an aryl group,one of R.sup.4 and R.sup.5 is a hydrogen and the other is selected from hydrogen, aryl sulphonyl and trifluoroacetyl,G represents carbonyl, sulphonyl, sulphoxy, phosphoryl or an N-substituted or unsubstituted imino group and X is a moiety such that at a pH in the range of 9.5 to 12.5 in the presence of an oxidized hydroquinone a cyclization reaction takes place cleaving the moiety -G-X from the remainder of the molecule and forming a cyclic structure comprising atoms of the moiety -G-X.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: May 15, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kevin P. Hall, Andrew W. Mott
  • 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: 4859567
    Abstract: A method of forming a high contrast negative image is disclosed, comprising developing an imagewise exposed substantially surface latent image-type silver halide photographic material in the presence of a hydrazine derivative with a developer, said developer having a pH of 10.5 to 12.3 and containing(1) a developing agent,(2) not less than 0.25 mol/liter of a sulfite,(3) a compound represented by formula (I):Ar--R.sub.1)n (I),wherein Ar represents an aryl group, and R.sub.1 represents an alkyl group or an alkoxy group and n is an integer of from 1 to 3, and(4) a compound represented by formula (II):R.sub.2 --SO.sub.3 M (II),or a compound represented by formula (III):R.sub.3 --COOM (III),wherein M represents a hydrogen atom, Na, K or NH.sub.4, and R.sub.2 and R.sub.3 each represents an alkyl group having at least 3 carbon atoms, an aryl group or a heterocyclic group.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: August 22, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Eiichi Okutsu, Mitsunori Hirano
  • Patent number: 4851321
    Abstract: A superhigh contrast negative type silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer, the emulsion layer or at least one other hydrophilic colloid layer containing at least one hydrazine derivative and at least one compound of formula (I):Y[(X).sub.n A-B].sub.m (I)wherein Y represents a group capable of adsorbing to silver halide; X represents a divalent linking group comprising an atom or atoms selected from a hydrogen atom, a carbon atom, a nitrogen atom, an oxygen atom and a sulfur atom or an atomic group comprised of the atoms; A represents a divalent linking group; B represents a substituted or unsubstituted amino group, an ammonium group or a nitrogen-containing heterocyclic group; m represents 1, 2 or 3; and n represents 0 or 1. The photographic material may contain an organic desensitizer and a water-soluble rhodium salt, and the material has a low sensitivity and can be handled in a bright room.
    Type: Grant
    Filed: November 6, 1987
    Date of Patent: July 25, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiro Takagi, Hisashi Okada, Morio Yagihara, Kazunobu Katoh
  • Patent number: 4816373
    Abstract: Disclosed is a method for producing images which comprises imagewise exposing a silver halide photographic light-sensitive material and then developing the exposed light-sensitive material in the presence of a compound represented by the following general formula [I], [II] or [III]: ##STR1## wherein Ar represents an aryl group, R represents a hydrogen atom, an alkyl group, an alkenyl group, an unsaturated hetero ring group or an aryl group and R.sub.1 and R.sub.2 each represent a hydrogen atom or a group represented by the general formula (i): ##STR2## wherein R.sub.0 represents an alkyl group, an alkenyl group, an aryl group, an alkoxy group or an aryloxy group and n is an integer of 1 or 2. ##STR3## wherein Ar, R.sub.1 and R.sub.2 are as defined in the general formula [I] and R.sub.3 and R.sub.4 each represent a hydrogen atom, an alkyl group, an aryl group, an unsaturated hetero ring group or a substituted amino group and R.sub.3 and R.sub.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: March 28, 1989
    Assignee: Mitsubishi Paper Mills, Ltd.
    Inventors: Minoru Ohashi, Shoichi Horii, Satoshi Kaneko
  • Patent number: 4798780
    Abstract: A silver halide photographic light sensitive emulsion containing a hydrazine of the general formulaR.sup.3 -NR.sup.4 -NR.sup.5 -G-X (I)in which:R.sup.3 represents an aryl group,one of R.sup.4 and R.sup.5 is a hydrogen and the other is selected from hydrogen, aryl sulphonyl and trifluoroacetyl,G represents carbonyl, sulphonyl, sulphoxy, phosphoryl or an N-substituted or unsubstituted imino group andX is a moiety such that at a pH in the range of 9.5 to 12.5 in the presence of an oxidized hydroquinone a cyclization reaction takes place cleaving the moiety -G-X from the remainder of the molecule and forming a cyclic structure comprising atoms of the moiety -G-X.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: January 17, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kevin P. Hall, Andrew W. Mott
  • Patent number: 4786584
    Abstract: A method of supplying a replenishing solution to the processing tank incorporated in an automatic developing machine in which a photosensitive material is processed. In the method, a less active replenishing solution is first supplied to the processing tank at the commencement of the present processing operation of the automatic developing machine prior to our in the course of the processing of the photosensitive material, the less active replenishing solution compensating for the deterioration of a developer due to air during the preceding operating period and the subsequent stop period of the automatic developing machine. A normally active replenishing solution is then supplied to the processing tank after completion of the supply of the less active replenishing solution, the normally active replenishing solution compensating for the deterioration of the developer due to the processing of the photosensitive material.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: November 22, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yoichi Endo
  • Patent number: 4777118
    Abstract: High contrast negative images are obtained by developing a silver halide photographic element, in the presence of a hydrazine compound, with an alkali aqueous developing solution which contains a combination of developing agent comprising hydroquinone or substituted hydroquinone and a superadditive developing agent and an antioxidant, wherein the developing solution has a pH lower than about 12 and wherein the silver halide photographic element comprises an emulsion layer including surface latent image negative type silver halide grains in reactive association with a contrast promoting agent, preferably a diarylcarbinol compound, more preferably a diarylmethanol compound in a quantity useful to increase contrast.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: October 11, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jonathan P. Kitchin, Carlo Marchesano
  • 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: 4756990
    Abstract: A method of effecting high contrast development of an image-wise exposed photographic silver halide emulsion layer material wherein the developing proceeds in an aqueous medium having a pH of 10 to 12 and containing:(a)(i) hydroquinone or a substituted hydroquinone,(ii) an auxiliary developing agent having a developing activity of such degree as to give when utilized in the Standard Development Test defined in the specification a relative development rate (f.sub.x) in the range of about 1-2(b) free sulphite ions in an amount of at least 5 grams per liter of the medium,(c) an organic anti-fogging agent, and(d) a polymer containing a plurality of alkylene oxide units having a molecular weight of at least about 1500.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: July 12, 1988
    Assignee: AGFA-Gevaert N.V.
    Inventors: Richard A. Ooms, Robert J. Pollet
  • 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: 4735887
    Abstract: Sharper edges are obtained in silver halide wash-off films for tanning development when from 5 to 60% of the unhardened gelatin binder in one or more layers is replaced with a synthetic amphoteric polymer consisting essentially of at least one of each of three constituents: (a) carboxylic acid, (b) alkyl primary amine, and (c) secondary and/or tertiary amine, the amphoteric polymer having an isoelectric point of from 4 to 8.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: April 5, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert P. Foss, Daniel R. Fruge
  • 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: 4693956
    Abstract: A process is disclosed for forming a high-contrast photographic image by developing a silver halide photographic element, including at least a silver halide emulsion layer, with an aqueous alkaline developing solution containing a dihydroxybenzene developing agent, a superadditive developing agent and an antioxidant at a pH of less than 12 in the presence of a hydrazine compound, an organic antifogging and contrast promoting agent selected within the class including a benzotriazole compound and a benzimidazole compound and a non polymeric hydroxymethylidyne group containing compound of formula: ##STR1## wherein R.sub.1 and R.sub.2 each independently represent a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, or R.sub.1 and R.sub.2 together complete a non aromatic cyclic group.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: September 15, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Carlo Marchesano
  • Patent number: 4686167
    Abstract: Disclosed are novel compounds of the formula: ##STR1## wherein: X=--NR.sub.5 R.sub.6, or --OR.sub.7 ;R.sub.1 and R.sub.2 are independently hydrogen, substituted or unsubstituted alkyl, haloalkyl, hydroxyalkyl alkoxyalkyl, alkylaminoalkyl or arylalkyl having up to 18 carbons; cycloalkyl; phenyl or naphthyl; alkylphenyl, cyanophenyl, halophenyl or alkoxyphenyl substituents.R.sub.3 is hydrogen, benzyl, alkoxybenzyl, halobenzyl or alkylbenzyl, provided that if neither R.sub.1 nor R.sub.2 is hydrogen, then R.sub.3 is hydrogen.R.sub.4 is a divalent aromatic group which is substituted or unsubstituted.R.sub.5, R.sub.6, and R.sub.7 are independently hydrogen, alkyl, hydroxyalkyl, haloalkyl, alkoxyalkyl, alkylaminoalkyl, acylaminoalkyl, aminoalkyl or phenylalkyl having up to 12 carbons; a cycloalkyl substituent; phenyl or naphthyl; an alkylphenyl, cyanophenyl, halophenyl or alkoxyphenyl substituent.Furthermore, either R.sub.1 and R.sub.3 or R.sub.1 and R.sub.
    Type: Grant
    Filed: September 26, 1985
    Date of Patent: August 11, 1987
    Assignee: Anitec Image Corporation
    Inventors: Bruce M. Resnick, Allan J. Wexler
  • Patent number: 4668605
    Abstract: A silver halide photographic material containing a hydrazine derivative of the general formula (I):R.sub.1 --NHNHCHO (I)wherein R.sub.1 is a substituted or unsubstituted aryl group, is developed with high contrast by the use of an aqueous alkaline developer having a pH value of 10.5 to 12.3 and comprising the following components (1) through (5):(1) a dihydroxybenzene type developing agent;(2) a p-aminophenol type developing agent;(3) at least 0.3 mol/l of a sulfite preservative;(4) 0.05 to 0.30 mol/l of an alkanolamine of the general formula (II):(C.sub.2 H.sub.5).sub.2 N--R.sub.2 (II)wherein R.sub.2 is a hydroxyalkyl group having 2 to 10 carbon atoms; and(5) 10.sup.-4 to 10.sup.-2 mol/l of a mercapto compound of the general formula (III); ##STR1## where M.sub.1 and M.sub.2 are the same or different and each is a hydrogen atom, an alkali metal atom or an ammonium group;whereby a negative image of high contrast may be formed on said photographic material.
    Type: Grant
    Filed: June 5, 1985
    Date of Patent: May 26, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Eiichi Okutsu, Mitsunori Hirano
  • Patent number: 4619886
    Abstract: A process for forming a high contrast negative image by developing an exposed substantial surface latent image type silver halide photographic light-sensitive material in the presence of hydrazines, which comprises using a developing solution having a pH value of 10.5 to 12.3 and containing at least(1) a developing agent,(2) 0.25 mol/l or more of sulfite, and(3) a compound represented by the following general formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5, which may be the same or different, each represents a hydrogen atom, a hydroxyl group, an alkyl group, an alkoxy group or a substituted alkyl group. According to the process, the development processing time required is shortened in the case of forming a high contrast negative image with a stable developing solution using hydrazines.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: October 28, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Eiichi Okutsu
  • 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: 4569904
    Abstract: A method for developing an exposed negative silver halide photographic light-sensitive material is described, in the presence of a hydrazind derivative, comprising treating the material with a developer containing at least components (a) a developing agent, (b) not less than 0.25 mol/liter of a sulfite, and (c) not less than 0.1 mol/liter of a compound having an acid dissociation constant of from 1.times.10.sup.-11 to 3.times.10.sup.-13, and having a pH value of from 10.5 to 12.3.
    Type: Grant
    Filed: October 23, 1984
    Date of Patent: February 11, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Eiich Okutsu, Kazumi Watase, Yoshio Inagaki, Shigeo Hirano
  • Patent number: 4292391
    Abstract: Pyrazolo [3,4-d] pyrimidine, and derivatives thereof, can be added to either a silver halide emulsion, or to a hydroquinone (litho) developer to accelerate development and reduce the induction period.
    Type: Grant
    Filed: February 6, 1980
    Date of Patent: September 29, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Joseph D. Overman
  • Patent number: 4286044
    Abstract: A lith-type silver halide photographic material having high sensitivity and providing good dot quality images comprising a support having coated thereon a silver halide emulsion containing a sensitizing dye of dimethine merocyanine type represented by formula (I) and a sensitizing dye represented by formula (II): ##STR1## wherein R.sub.1 represents a sulfoalkyl group, a carboxyalkyl group, a sulfoaralkyl group, or a carboxyaralkyl group; the alkyl moiety of each alkyl group contains up to 4 carbon atoms; R.sub.2 represents a substituted or unsubstituted alkyl group or an aryl group; R.sub.3 represents --(CH.sub.2).sub.n.sbsb.1 CONH(CH.sub.2).sub.m.sbsb.1 OH or --(CH.sub.2).sub.n.sbsb.2 O(CH.sub.2).sub.m.sbsb.2 OH (wherein m.sub.1, m.sub.2, n.sub.1, and n.sub.2 each is 1 to 7; m.sub.1 +n.sub.1 and m.sub.2 +n.sub.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: August 25, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yuji Mihara, Haruo Takei, Noriyuki Inoue, Tadashi Ikeda, Kenichi Kuwabara
  • 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: 4266003
    Abstract: A silver halide photographic emulsion which comprises at least one compound represented by the formula (I): ##STR1## where Z represents an atomic group necessary to complete an oxazole nucleus, a benzoxazole nucleus or a naphthoxazole nucleus, R.sub.1 represents a substituted or unsubstituted alkyl group, R.sub.2 represents an alkoxycarbonylalkyl group, a hydroxyalkyl group, a hydroxyalkoxyalkyl group, a carbamoylalkyl group, a hydroxyphenyl group or a hydroxyalkylphenyl group, and R.sub.3 and R.sub.4 which may be the same or different each represents a hydrogen atom, an alkyl group, an alkoxy group, a chlorine atom or a carboxyl group, and a lithographic silver halide material containing the same.
    Type: Grant
    Filed: September 25, 1979
    Date of Patent: May 5, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Ikeda, Takeo Sakai, Haruo Takei, Noriyuki Inoue
  • Patent number: 4228234
    Abstract: A method for processing silver halide lithographic photosensitive materials with a lithographic developer using an automatic developing machine, the improvement comprising maintaining constant the development activity of the lithographic developer by adding supplemental amounts of two kinds of replenishers to the lithographic developer with a replenisher (RD) being employed to compensate for the decrease in the development activity of the lithographic developer resulting from the development-processing of lithographic photosensitive materials and a replenisher (RO) being employed to compensate for the decrease in the development activity of the lithographic developer resulting from the passage of time, where replenishers (RD) and (RO) differ in free sulfite ion concentrations, bromide ion concentrations and pH, wherein the method comprises adding a supplemental amount of replenisher (RD) during the development-processing operation as herein defined and, prior to the start of each development-processing operat
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: October 14, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Eiichi Okutsu, Katsumi Hayashi
  • Patent number: H1608
    Abstract: 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: Grant
    Filed: September 27, 1994
    Date of Patent: November 5, 1996
    Assignee: Konica Corp.
    Inventors: Shoji Nishio, Hideki Komatsu