Toner Containing Patents (Class 430/965)
  • Patent number: 7229753
    Abstract: A photothermographic material comprising at least (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a reducing compound represented by the following general formula (1), and (d) a binder: Q1—NHNH—R1: ??Formula (1) wherein, in the general formula (1), Q1 represents a 5- to 7-membered unsaturated ring bonding to NHNH—R1 at a carbon atom, and R1 represents a carbamoyl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfonyl group or a sulfamoyl group, provided that when R1 is propylcarbamoyl group, Q1 is not 2,3,5,6-tetrachloro-4-cyanophenyl group. According to the present invention, there is provided a novel photothermographic materials showing high sensitivity, high development speed and little fluctuation of performance due to heat development temperature variation.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: June 12, 2007
    Assignee: Fujifilm Corporation
    Inventors: Toyohisa Oya, Kouta Fukui, Yasuhiro Yoshioka, Kazunobu Katoh
  • Patent number: 7172852
    Abstract: A black and white thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, a binder and optionally photosensitive silver halide, characterized in that the thermosensitive element further contains deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of the at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10?6:1; and the use for the purpose of increasing the ratio of Dmax to the quantity of said substantially light-insensitive organic silver salts per unit area of the above-mentioned thermographic recording material.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: February 6, 2007
    Assignee: AGFA Gevaert
    Inventors: Ingrid Geuens, Luc Verberckt, Ivan Hoogmartens, Frank De Voeght, Iris Vanwelkenhuysen
  • Patent number: 7112399
    Abstract: Photothermographic materials are coated with thermally developable imaging layers on both sides of the support. Such materials can be arranged in association with one or more phosphor intensifying screens capable of providing emission at a predetermined wavelength in imaging assemblies. These imaging assemblies can be exposed to X-radiation and thereby form a latent image in the photothermographic material that can eventually be heat developed and used for medical diagnosis. The photothermographic materials contain an opaque material that acts as a crossover control agent that absorbs radiation at the predetermined wavelength, for example at 300 to 450 nm, and has limited absorption at higher wavelengths. When the photothermographic material is heated, the opaque material loses its opacity. Additional crossover control agents, such as UV-absorbing compounds, can also be added to the support or to an antihalation layer.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: September 26, 2006
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Alphonse D. Camp
  • Patent number: 7097961
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, said thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, at least one binder and at least one stabilizer represented by formula (I): wherein R1, R2, R3 and R4 are independently selected from the group consisting of a hydrogen atom, halogen atoms and aliphatic, alkoxy, nitro, acyl, sulfonyl, nitrile, alkaryl, aryl, amino, thioalkyl, aldehyde, urea, —O—(C?O)-alkyl, —O—(C?O)-aryl, —O—(C?O)—O-alkyl, —O—(C?O)—O-aryl, —NH—(C?O)-alkyl, —NH—(C?O)-aryl, —(C?O)—NH-alkyl, —(C?O)—NH-aryl, —NH—(SO2)-alkyl, —NH—(SO2)-aryl, —(SO2)—NH-alkyl, —(SO2)—NH-aryl groups; X is represented by -A(-M)n or is selected from the group consisting of substituted aliphatic groups, unsubstituted aliphatic groups, substituted cycloaliphatic groups, unsubstituted cycloaliphatic groups
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: August 29, 2006
    Assignee: Agfa Gevaert
    Inventors: Frank Louwet, Johan Loccufier
  • Patent number: 7063941
    Abstract: A photothermographic emulsion is prepared by chemically sensitizing silver halide grains by oxidative decomposition of an organic sulfur-containing compound on or around the silver halide grains. This procedure uses a unique sequence of steps and provides increased photographic speed and manufacturing reproducibility. The resulting photothermographic emulsion can be used to prepare photothermographic materials.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: June 20, 2006
    Assignee: Eastman Kodak Company
    Inventors: Lilia P. Burleva, Mark C. Skinner, Kumars Sakizadeh, Sharon M. Simpson
  • Patent number: 7033743
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material has a support and on one side of the support comprises a thermosensitive element, a barrier layer and an outermost protective layer, the thermosensitive element being exclusive of a high contrast agent and containing at least one substantially light-insensitive silver salt of a carboxylic acid, at least one reducing agent therefor in thermal working relationship therewith, at least one toning agent and at least one binder, wherein the at least one reducing agent is an ortho-dihydroxy-benzene derivative and the barrier layer comprises a copolymer comprising vinyl chloride units and vinyl acetate and/or vinyl alcohol units, a copolymer comprising styrene units and acrylonitrile units, a copolymer comprising cationic units and/or a copolymer comprising styrene units and maleic acid units.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: April 25, 2006
    Assignee: Agfa Gevaert
    Inventors: Ingrid Geuens, Frank Loewet, Peter Michiels
  • Patent number: 7026104
    Abstract: A heat-developable photosensitive material comprising on a support light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent and a binder, wherein at least 30 mole % of the total light-sensitive silver halide is silver halide of high silver iodide content having an average ?-phase proportion of from 5 to 70 mole %, and a method of forming images on the heat-developable photosensitive material with a semiconductor laser.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: April 11, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumito Nariyuki
  • Patent number: 7018786
    Abstract: A black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, wherein the at least one toning agent is represented by formula (I): wherein R1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; with the proviso that R1 may not be a hydrogen atom if both R2 and R3 are both hydrogen atoms; R2 and R3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonate, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R2 and R3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrog
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: March 28, 2006
    Assignee: AGFA Gevaert
    Inventors: Ingrid Geuens, Johan Loccufier, Vera Drieghe
  • Patent number: 7008748
    Abstract: Thermally developable materials such as thermographic and photothermographic materials include a co-precipitate comprising first and second organic silver salts, the first organic silver salt comprising a silver salt of a nitrogen-containing heterocyclic compound containing an imino group, and the second organic silver salt comprising a silver salt of a mercaptotriazole. The first organic silver salt can be used in the imaging process as a source of reducible silver ions, and the second organic silver salt can be a source of a toning agent. The co-precipitate can be prepared using double-jet precipitation techniques to provide an aqueous dispersion that can be used in imaging formulations.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: March 7, 2006
    Assignee: Eastman Kodak Company
    Inventors: Dirk J. Hasberg, Doreen C. Lynch, Kui Chen-Ho, Chaofeng Zou
  • Patent number: 6962773
    Abstract: A black and white thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing at least one substantially light-insensitive organic silver salt, a binder and optionally photosensitive silver halide, characterized in that the thermosensitive element further contains deliberately added metal nano-particles in a molar ratio with respect to the total molar concentration of the at least one substantially light-insensitive organic silver salt in the range of 0.05:1 to 10?6:1; and the use for the purpose of increasing the ratio of Dmax to the quantity of said substantially light-insensitive organic silver salts per unit area of the above-mentioned thermographic recording material.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: November 8, 2005
    Assignee: Agfa Gevaert
    Inventors: Ingrid Geuens, Luc Verberckt, Ivan Hoogmartens, Frank De Voeght, Iris Vanwelkenhuysen
  • Patent number: 6942960
    Abstract: Aqueous-based thermally sensitive emulsions and photothermographic imaging materials include photosensitive silver halide grains that comprise at least 15 mol % iodide based on total silver in the grains and are doped with bismuth (+3). These materials have increased photographic speed especially in the infrared region of the electromagnetic spectrum.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: September 13, 2005
    Assignee: Eastman Kodak Company
    Inventors: Joe E. Maskasky, David A. Dickinson, Victor P. Scaccia, Richard L. Gaines
  • Patent number: 6919171
    Abstract: The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: July 19, 2005
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Patent number: 6916599
    Abstract: A photothermographic material comprising: a support; and a photosensitive silver halide, a nonphotosensitive organic silver salt, a reducing agent and a binder, wherein the photosensitive silver halide comprises 90% by mole or more of a silver iodide and has a silver iodobromide structure having an average silver iodide content of 35% by mole or less in vicinity of a surface thereof.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: July 12, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumito Nariyuki
  • Patent number: 6908731
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one stabilizer selected from the group consisting of 1-phenyl-5-mercaptotetrazole compounds in which the phenyl group is substituted with a substituent containing an optionally substituted aryl group; and
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: June 21, 2005
    Assignee: Agfa-Gevaert
    Inventors: Ingrid Geuens, Carlo Uyttendaele, Ivan Hoogmartens, Johan Loccufier
  • Patent number: 6902880
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one stabilizer selected from the group consisting of 1-(5-mercapto-1-tetrazolyl)-acetyl compounds represented by formula (I): wherein R1 is —NR2R3, —OR4 or an optionally substituted aryl or heteroaryl group; R2 is hydrogen or an optionally substituted alkyl, aryl or heteroaryl group; R3 is an optionally substituted aryl or heteroaryl group; and R4 is an optionally substituted aryl group; and compounds with two or more groups represented by formula (II): where Q comprises the necessary atoms to form a 5- or 6-membered unsaturated heterocyclic ring, A is hydrogen, a counterion to compensate the negative charge of the thiolate group or two or more A groups provide a linki
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: June 7, 2005
    Assignee: AGFA-Gevaert
    Inventors: Ingrid Geuens, Johan Loccufier
  • Patent number: 6844145
    Abstract: High-speed black-and-white photothermographic materials can be imaged in any suitable fashion using ultraviolet, visible, infrared, or X-radiation. They can have one or more thermally developable imaging layers on either or both sides of the support and can be imaged with or without a phosphor intensifying screen in an imaging assembly. The photothermographic emulsions and materials have a net Dmin less than 0.25, and require less than 1 erg/cm2 to achieve a density of 1.00 above net Dmin.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: January 18, 2005
    Assignee: Eastman Kodak Company
    Inventors: Chaofeng Zou, Doreen C. Lynch
  • Patent number: 6808872
    Abstract: A silver salt photothermographic material exhibiting enhanced image quality and superior uniformity without causing uneven density is disclosed, comprising on a support a light-sensitive layer comprising a light-sensitive emulsion containing organic silver salt grains and light-sensitive silver halide grains, a reducing agent and a binder and a conductive layer, wherein the conductive layer contains at least one of compounds represented by the following general formulas: (Rf2)—(A2)s LiO3S—(CF2)m—SO3Li MO3S—(CF2)t—SO3M L[O3S—(CF2)u—SO3]
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: October 26, 2004
    Assignee: Konica Corporation
    Inventor: Shinji Kudo
  • Patent number: 6783927
    Abstract: A photothermographic material is described which comprises a support having provided on one surface thereof at least one kind of a light-sensitive silver halide, a light-insensitive organic silver salt, a reducing agent for silver ions, and a binder, wherein the photothermographic material comprises the surface active agent represented by the following formula (F): wherein Rf represents a perfluoroalkyl group, Rc represents an alkylene group, Z represents a group having an anionic group, a cationic group, a betaine-series group, or a nonionic polar group necessary for imparting a surface activity, n represents an integer of 0 or 1, and m represents an integer of 1, 2 or 3. The photothermographic material can remarkably prevent attaching of dust, etc., which become the case of forming white spots after heat development.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: August 31, 2004
    Assignee: Fuji Photo Film, Co., Ltd.
    Inventor: Yasuhiro Yoshioka
  • Publication number: 20040161714
    Abstract: A photothermographic material contains a support having thereon an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and a non-photosensitive outermost layer on a side of the support where the image forming layer is provided, The photosensitive silver halide contains silver iodide in an amount of from 40 to 100% by mole, and a binder contained in the outermost layer contains at least one of a latex polymer and a water soluble polymer that is not derived from an animal protein in an amount of 50% by mass or more.
    Type: Application
    Filed: December 30, 2003
    Publication date: August 19, 2004
    Inventor: Keiichi Suzuki
  • Publication number: 20040157177
    Abstract: The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.
    Type: Application
    Filed: December 23, 2003
    Publication date: August 12, 2004
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Publication number: 20040152027
    Abstract: A black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, wherein the at least one toning agent is represented by formula (I): 1
    Type: Application
    Filed: December 16, 2003
    Publication date: August 5, 2004
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Johan Loccufier, Vera Drieghe
  • Patent number: 6762013
    Abstract: Nonpolymeric fluorochemicals defined as by the following Structure I are useful in thermally developable materials. The fluorochemicals are defined as follows: Rf—R—N(R1)(R2)(R3)+X−  (I) wherein Rf is a straight or branched chain perfluoroalkyl group having 4 to 18 carbon atoms, R is a divalent linking group comprising at least 4 carbon atoms and a sulfide group in the chain, R1, R2, R3 are independently hydrogen or alkyl groups or any two of R1, R2, and R3 taken together can represent the carbon and nitrogen atoms necessary to provide a 5- to 7-membered heterocyclic ring with the cationic nitrogen atom, and X− is a monovalent anion.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: July 13, 2004
    Assignee: Eastman Kodak Company
    Inventors: Kumars Sakizadeh, Gary E. LaBelle, Aparna V. Bhave
  • Publication number: 20040131983
    Abstract: The invention provides a photothermographic material including: a support and an image-forming layer including a non-photosenisitive silver salt, a photosensitive silver halide, a binder, and a reduction agent disposed on the support, wherein a silver iodide content in the photosensitive silver halide is in a range from 40 mol % to 100 mol %; and an average sphere-equivalent diameter of the photosensitive silver halide is in a range from 0.3 &mgr;m to 5.0 &mgr;m. The photothermographic material may further include a silver iodide complex forming agent as a compound which substantially reduces visible light absorption caused by the photosenisitive silver halide after thermal development. At least 50%, in terms of a projected area, of the photosensitive silver halide may be occupied by tabular silver halide grains having an aspect ratio of from 2 to 50 and being deposited with a silver salt in an epitaxial growth manner.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 8, 2004
    Inventors: Tomoyuki Ohzeki, Eiichi Okutsu
  • Publication number: 20040126722
    Abstract: The present invention provides a photothermographic material comprising a substrate, and a photosensitive silver halide, a non-photosensitive organic silver salt, reducing agents for thermal development and a binder which are provided on the substrate, wherein: the reducing agents for thermal development include a reducing agent which does not form a dye during thermal development and a reducing agent which forms a dye during thermal development; and the reducing agent which forms a dye has higher activity than that of the reducing agent which does not form a dye. It is preferable that the reducing agent which forms a dye at thermal development and has a specific chemical structure is contained in an amount of 40% by mol or less relative to a total amount of the reducing agents.
    Type: Application
    Filed: July 21, 2003
    Publication date: July 1, 2004
    Inventors: Yasuhiro Yoshioka, Toyohisa Oya
  • Publication number: 20040126719
    Abstract: A substantially light-insensitive black and white monosheet thermographic recording material has a support and on one side of the support comprises a thermosensitive element, a barrier layer and an outermost protective layer, the thermosensitive element being exclusive of a high contrast agent and containing at least one substantially light-insensitive silver salt of a carboxylic acid, at least one reducing agent therefor in thermal working relationship therewith, at least one toning agent and at least one binder, wherein the at least one reducing agent is an ortho-dihydroxy-benzene derivative and the barrier layer comprises a copolymer comprising vinyl chloride units and vinyl acetate and/or vinyl alcohol units, a copolymer comprising styrene units and acrylonitrile units, a copolymer comprising cationic units and/or a copolymer comprising styrene units and maleic acid units.
    Type: Application
    Filed: December 16, 2003
    Publication date: July 1, 2004
    Applicant: AGFA-GEVAERT
    Inventors: Ingrid Geuens, Frank Louwet, Peter Michiels
  • Publication number: 20040115573
    Abstract: A photothermographic material containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, and a binder on at least one surface of a support, wherein silver iodide is contained in the photosensitive silver halide in an amount of 40% to 100% by mole, and the reducing agent contains a compound represented by the following formula (R-1).
    Type: Application
    Filed: December 9, 2003
    Publication date: June 17, 2004
    Inventor: Kouta Fukui
  • Patent number: 6737228
    Abstract: A black-and-white silver halide photographic film material has been provided, wherein said material has first and second major surfaces, at least one of which is coated with at least one light-sensitive silver halide emulsion layer, overcoated with a protective antistress layer, wherein said emulsion layer(s) have chemically and spectrally sensitized {111} tabular hexagonal emulsion grains or crystals rich in silver bromide in an amount covering at least 50% of the total projective grain surface of all grains, wherein said grains further have an average equivalent volume diameter in the range from 0.3 &mgr;m up to 1.5 &mgr;m and an average grain thickness of less than 0.30 &mgr;m, and an average amount of iodide from 0.05 mole % up to 0.5 mole % based on silver over the whole grain volume, characterized in that said material comprises, in an amount of at least 0.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: May 18, 2004
    Assignee: AGFA-Gevaert
    Inventors: Kathy Elst, Johan Loccufier
  • Publication number: 20040058281
    Abstract: An image forming method using a photothermographic material comprising, on at least one side of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, wherein the photothermographic material: 1) having a gamma value of 2.0 to 4.0 is developed in a thermal development device configured such that a distance between an exposing section and a developing section is not more than 50 cm; 2) having a silver salt of fatty acid at an application amount of 5 mmol/m2 to 18 mmol/m2 is developed in a thermal development device configured such that a distance between an exposing section and a developing section is not more than 50 cm; 3) is discharged from a thermal development device within 35 seconds after heating for thermal development is ceased.
    Type: Application
    Filed: August 21, 2003
    Publication date: March 25, 2004
    Inventors: Katsutoshi Yamane, Sumito Yamada, Eiichi Okutsu, Tomoyuki Ohzeki, Yutaka Oka
  • Patent number: 6703191
    Abstract: Thermally developable compositions such thermographic and photothermographic emulsions include certain triazine-thione compounds. These emulsions can be used in thermally developable materials such as thermographic and photothermographic materials to provide increased image density and shortened development time, and to allow development at lower temperatures. Such materials can have imaging layers on one or both sides of the support.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: March 9, 2004
    Assignee: Eastman Kodak Company
    Inventors: Doreen C. Lynch, Stacy M. Ulrich, Paul G. Skoug
  • Patent number: 6699647
    Abstract: Photothermographic imaging materials having increased photospeed are provided by certain tellurium chemical sensitizers that are added during the formulation of a photothermographic emulsion.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: March 2, 2004
    Assignee: Eastman Kodak Company
    Inventors: Doreen C. Lynch, Andrea L. Opatz, Steven M. Shor, Sharon M. Simpson, Brian C. Willett, Henry J. Gysling
  • Patent number: 6699648
    Abstract: Antistatic compositions include a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with an amine wherein Rf comprises 4 or more fully fluorinated carbon atoms. These antistatic compositions can be formulated in organic solvent-based conductive coating compositions, with or without hydrophobic binders, that can be used to form conductive layers in thermally developable materials including thermographic and photothermographic materials.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: March 2, 2004
    Assignee: Eastman Kodak Company
    Inventors: Kumars Sakizadeh, Gary E. LaBelle, Michael W. Orem, Aparna V. Bhave
  • Patent number: 6692906
    Abstract: The present disclosure relates to aqueous dispersions of silver (carboxylate-azine toner) particles wherein the azine content of the particles is from about 0.01 to 10% by weight relative to silver carboxylate. The carboxylates are typically silver salts of long chain fatty acids and the azine toners are the compounds that function as development accelerators and toning agents such as phthalazine. These silver (carboxylate-azine) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: February 17, 2004
    Assignee: Eastman Kodak Company
    Inventors: Mark Lelental, Peter J. Ghyzel, John W. Boettcher, James L. Wakley, David A. Dickinson, Joe E. Maskasky, Roger L. Klaus, Victor P. Scaccia, Thomas Blanton
  • Publication number: 20040018458
    Abstract: The present invention provides a photothermographic material including a support having disposed on one surface of the support, at least one image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent, a development accelerator and a binder, and at least one protective layer on the identical surface, wherein 50% by mass or more of the binder contained in the image forming layer is a water soluble binder, and the reducing agent is contained in the form of a solid dispersion.
    Type: Application
    Filed: May 15, 2003
    Publication date: January 29, 2004
    Inventor: Hajime Nakagawa
  • Publication number: 20040005521
    Abstract: A silver salt photothermographic material exhibiting enhanced image quality and superior uniformity without causing uneven density is disclosed, comprising on a support a light-sensitive layer comprising a light-sensitive emulsion containing organic silver salt grains and light-sensitive silver halide grains, a reducing agent and a binder and a conductive layer, wherein the conductive layer contains at least one of compounds represented by the following general formulas: 1 (Rf2)—(A2)s LiO3S—(CF2)m—SO3Li MO3S—(CF2)t—SO3M L[O3S—(CF2)u—SO3]
    Type: Application
    Filed: June 10, 2003
    Publication date: January 8, 2004
    Inventor: Shinji Kudo
  • Patent number: 6649329
    Abstract: The present application relates to a photothermographic material comprising, on a side of a support, (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a phenol derivative having the specific structure as reducing compound, (d) a binder, (e) a coupler compound, and (f) a compound represented by Q1—NHNH—V6 wherein Q1 is a 5- to 7-membered unsaturated ring and V6 is a carbamoyl group, etc.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: November 18, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toyohisa Oya, Kazunobu Katoh
  • Patent number: 6645714
    Abstract: A photothermographic material comprising at least (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a reducing agent represented by the following formula (1), (d) a binder, and (e) a phenol compound represented by the following formula (2) on the same side of a support: wherein, in the formula (1), V1 to V8 each independently represent hydrogen atom or a substituent, L represents a bridging group consisting of —CH(V9)— or —S—, and V9 represents hydrogen atom or a substituent; wherein, in the formula (2), R1 and R2 each independently represent hydrogen atom or a substituent, X1 to X3 each independently represent hydrogen atom or a substituent, provided that the substituents represented by X1 to X3 do not represent hydroxy group, and when the substituents represented by X1 to X3 are bonded to the phenol ring via nitrogen atoms, X1 to X3 represent a nitrogen-containing heterocyclic group or a group represented as —NH—C(&bo
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: November 11, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toyohisa Oya, Kazunobu Katoh
  • Publication number: 20030207216
    Abstract: The present invention provides a photothermographic material comprising a support and an image forming layer provided thereon, the image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, the photothermographic material meets at least one of the following conditions of (i) and (ii):
    Type: Application
    Filed: April 1, 2003
    Publication date: November 6, 2003
    Inventors: Kouta Fukui, Eiichi Okutsu, Fumito Nariyuki
  • Patent number: 6605418
    Abstract: Thermally developable compositions such thermographic and photothermographic emulsions include certain quaternary phthalazine compounds. These emulsions can be used in thermally developable materials such as thermographic and photothermographic materials to provide improved sensitometric and post processing properties. Such materials can have imaging layers on one or both sides of the support.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: August 12, 2003
    Assignee: Eastman Kodak Company
    Inventors: William D. Ramsden, Chaofeng Zou
  • Patent number: 6599685
    Abstract: Thermally developable photothermographic materials comprise a backside layer that includes a toner as a backside stabilizer. Useful backside stabilizers include pyridazine, phthalazine, phthalazinone, benzoxazine dione, benzthiazine dione, or quinazoline dione compounds, or derivatives of any of these compounds to provide improved shelf stability. These backside stabilizers can be provided particularly in non-photosensitive compositions that include an antihalation composition.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: July 29, 2003
    Assignee: Eastman Kodak Company
    Inventor: Steven H. Kong
  • Patent number: 6593069
    Abstract: A photothermographic material comprising at least (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a reducing compound represented by the following formula (1) or (2), (d) a binder and (e) a coupler compound on the same side of a support: wherein, in the formula (1), V1 to V4 each independently represent hydrogen atom or a substituent, and V5 represents a substituted or unsubstituted alkyl group, aryl group or heterocyclic group: Q1—NHNH—V6  (2) wherein, in the formula (2), Q1 represents a 5- to 7-membered unsaturated ring bonding to NHNH—V6 at a carbon atom, and V6 represents a carbamoyl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfonyl group or a sulfamoyl group.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: July 15, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toyohisa Oya, Kazunobu Katoh, Shigeo Hirano
  • Patent number: 6582892
    Abstract: A black-and-white photothermographic material that is sensitive at a wavelength greater than 700 nm, and comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, and a reducing composition for the non-photosensitive source reducible silver ions. The thermally-developable layers further comprises one or more indolenine dyes as post-processing stabilizing compounds and one or more merocyanine dyes or cyanine spectral sensitizing dyes that comprise one or more thioalkyl, thioaryl, or thioether groups.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: June 24, 2003
    Assignee: Eastman Kodak Company
    Inventors: Steven H. Kong, Bryan V. Hunt, William D. Ramsden
  • Patent number: 6576410
    Abstract: High-speed black-and-white photothermographic emulsions and materials comprise chemically sensitized photosensitive silver halide grains, at least 70% of the total photosensitive silver halide projected area being provided by tabular silver halide grains comprising at least 70 mole % bromide (based on total silver halide). The tabular grains have an average thickness of at least 0.02 &mgr;m and up to and including 0.10 &mgr;m, an equivalent circular diameter of at least 0.5 &mgr;m and up to and including 8 &mgr;m, and an aspect ratio of at least 5:1. These high-speed materials can be imaged in any suitable fashion using ultraviolet, visible, infrared, or X-radiation. In one embodiment, they have one or more thermally developable layers on both sides of the support and can be imaged using X-radiation with or without a phosphor intensifying screen in an imaging assembly.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: June 10, 2003
    Assignee: Eastman Kodak Company
    Inventors: Chaofeng Zou, Robert D. Wilson, Richard L. Daubendiek, Timothy R. Gersey
  • Patent number: 6573033
    Abstract: Aqueous-based photothermographic materials that are sensitive to visible or X-radiation contain X-radiation sensitive phosphors in association with specific chemically sensitized tabular silver halide grains. The silver halide grains comprise at least 70 mol % bromide, based on total silver halide, have an average thickness of at least 0.02 &mgr;m and up to and including 0.10 &mgr;m, an equivalent circular diameter (ECD) of at least 0.5 &mgr;m and up to and including 8 &mgr;m, and an aspect ratio of at least 5:1. These materials can be imaged in any suitable fashion but preferably they have one or more photothermographic layers on both sides of the support and can be imaged using X-radiation with or without an associated phosphor intensifying screen.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: June 3, 2003
    Assignee: Eastman Kodak Company
    Inventors: Sharon M. Simpson, William E. Moore
  • Patent number: 6555309
    Abstract: In the case where multiple slide hopper is used for simultaneous multilayer bead coating of photosensitive material, streak defect is occasionally cause, particularly in the case of coating photothermographic material, especially when the outermost layer includes materials capable of increasing optical density such as toner it more frequently happens. It is found that streak defect is restrained when meniscus curvature of upper side bead becomes less than 7.2 mm−1. This condition can be kept by selecting a proper value of clearance between the web surface and the lip of the slide hopper, that is from 0.10 mm to 0.40 mm, and a proper value of pressure in a lower side of the bead, that is from −100 Pa to −700 Pa.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: April 29, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Akifumi Kato
  • Patent number: 6548233
    Abstract: Aqueous-based thermally sensitive emulsions and imaging materials include two or more hindered phenol silver ion reducing agents in a non-crystalline reducing agent composition. Such compositions can be provided as evaporated dispersions and can be formulated in aqueous coating compositions to provide thermally developable materials such as thermographic and photothermographic materials.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: April 15, 2003
    Assignee: Eastman Kodak Company
    Inventors: John W. Boettcher, Paul L. Zengerle, Roger L. Klaus
  • Patent number: 6524781
    Abstract: A photothermographic material is disclosed, comprising a support provide thereon an image forming layer containing a light sensitive silver halide, an organic silver salt and a reducing agent and at least a component a layer, wherein the component layer contains a compound capable of trapping a material causing odor and is provided farther from the support than image forming layer.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: February 25, 2003
    Assignee: Konica Corporation
    Inventor: Yasunori Wada
  • Patent number: 6521384
    Abstract: The present invention is directed to a photothermographic element in which the density formed in a thermally processed photothermographic element is limited for the purpose of scanning the element prior to removal of silver halide, metallic silver, and/or any organic silver salts. In one embodiment of the invention, this is accomplished by employing limited quantities of sensitized silver halide in a photothermographic element.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: February 18, 2003
    Assignee: Eastman Kodak Company
    Inventor: Richard P. Szajewski
  • Publication number: 20020197569
    Abstract: A black-and-white silver halide photographic film material has been provided, wherein said material has first and second major surfaces, at least one of which is coated with at least one light-sensitive silver halide emulsion layer, overcoated with a protective antistress layer, wherein said emulsion layer(s) have chemically and spectrally sensitized {111} tabular hexagonal emulsion grains or crystals rich in silver bromide in an amount covering at least 50% of the total projective grain surface of all grains, wherein said grains further have an average equivalent volume diameter in the range from 0.3 &mgr;m up to 1.5 &mgr;m and an average grain thickness of less than 0.30 &mgr;m, and an average amount of iodide from 0.05 mole % up to 0.5 mole % based on silver over the whole grain volume, characterized in that said material comprises, in an amount of at least 0.
    Type: Application
    Filed: May 16, 2002
    Publication date: December 26, 2002
    Applicant: AGFA-GEVAERT
    Inventors: Kathy Elst, Johan Loccufier
  • Patent number: 6455221
    Abstract: The present invention uses a thermal transfer film in combination with a thermally sensitive color developing paper. The hue of the thermal transfer ink layer or the hue of the developed color of the color developing paper can be recorded on the color developing paper when the applied energy is low, and a plurality of colors can be recorded on the color developing paper by color mixture of the transfer from the thermal transfer ink layer and the developed color of the color developing paper when the applied energy is high.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: September 24, 2002
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Masafumi Hayashi
  • Patent number: 6436621
    Abstract: A multilayer light-sensitive silver halide photographic negative image type material and a method to prepare said material has been described, said material comprising on at least one side of a support a multilayer composition of at least two layers of negative image type silver halide emulsions adjacent to each other, wherein the emulsion layer closest to the said support comprises tabular emulsion crystals selected from the group consisting of silver chloride, silver chlorobromide, silver chloroiodide and silver chlorobromoiodide having a {111} crystal habit and silver chloride, silver chlorobromide, silver chloroiodide and silver chlorobromoiodide having a {100} crystal habit and wherein the adjacent layer(s) farther from the said support comprise(s) essentially cubic emulsion crystals selected from the group consisting of silver chloride, silver chlorobromide and silver bromide, wherein the essentially cubic grains are less sensitive than the tabular grains and wherein the said tabular
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: August 20, 2002
    Assignee: Agfa-Gevaert
    Inventors: Hieronymus Andriessen, Freddy Henderickx