Patents by Inventor Thomas J. Dannhauser
Thomas J. Dannhauser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9434201Abstract: An inkjet receiving medium including a substrate and having a topmost layer coated thereon at solid content of from 0.1 to 25 g/m2, wherein the topmost layer comprises from 30-70 wt % of one or more aqueous soluble salts of multivalent metal cations and at least 0.05 g/m2 of a cross-linked hydrophilic polymer binder. Improved optical density, reduced mottle and improved wet abrasion resistance are provided when the receiver is printed with an aqueous pigment-based ink. In further embodiments, the topmost layer may further comprise a latex dispersion for improved image durability.Type: GrantFiled: May 17, 2010Date of Patent: September 6, 2016Assignee: EASTMAN KODAK COMPANYInventors: Thomas J. Dannhauser, Gerald A. Campbell
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Publication number: 20110279554Abstract: An inkjet receiving medium including a substrate and having a topmost layer coated thereon at solid content of from 0.1 to 25 g/m2, wherein the topmost layer comprises from 30-70 wt % of one or more aqueous soluble salts of multivalent metal cations and at least 0.05 g/m2 of a cross-linked hydrophilic polymer binder. Improved optical density, reduced mottle and improved wet abrasion resistance are provided when the receiver is printed with an aqueous pigment-based ink. In further embodiments, the topmost layer may further comprise a latex dispersion for improved image durability.Type: ApplicationFiled: May 17, 2010Publication date: November 17, 2011Inventors: Thomas J. Dannhauser, Gerald A. Campbell
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Patent number: 8034422Abstract: A manufacturing an ink-receiving medium comprising the steps of providing a support, treating the support with a salt of a multivalent metal cation, and coating upon one or each side of the support at least one porous ink-receiving top layer from an aqueous coating composition consisting of non-cationic components, wherein the non-cationic components comprise a binder and anionic particles of average particle size less than 2.5 microns, wherein the ink-receiving top layer comprises at least 50% of the total solids by weight, such that the water-soluble salt of a multivalent metal cation is able to diffuse into the ink-receiving top layer, the method further comprising drying the coating and optionally calendering the coating. Also disclosed is inkjet media made from such method and a method of printing using such inkjet media.Type: GrantFiled: May 7, 2009Date of Patent: October 11, 2011Assignee: Eastman Kodak CompanyInventors: Thomas J. Dannhauser, Douglas E. Bugner, Sharon R. Girolmo
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Publication number: 20090213151Abstract: A manufacturing an ink-receiving medium comprising the steps of providing a support, treating the support with a salt of a multivalent metal cation, and coating upon one or each side of the support at least one porous ink-receiving top layer from an aqueous coating composition consisting of non-cationic components, wherein the non-cationic components comprise a binder and anionic particles of average particle size less than 2.5 microns, wherein the ink-receiving top layer comprises at least 50% of the total solids by weight, such that the water-soluble salt of a multivalent metal cation is able to diffuse into the ink-receiving top layer, the method further comprising drying the coating and optionally calendering the coating. Also disclosed is inkjet media made from such method and a method of printing using such inkjet media.Type: ApplicationFiled: May 7, 2009Publication date: August 27, 2009Inventors: Thomas J. Dannhauser, Douglas E. Bugner, Sharon R. Girolmo
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Patent number: 7569255Abstract: A method of manufacturing an ink-receiving medium comprising the steps of providing a support, treating the support with a salt of a multivalent metal cation, and coating upon one or each side of the support at least one porous ink-receiving top layer from an aqueous coating composition consisting of non-cationic components, wherein the non-cationic components comprise a binder and anionic particles of average particle size less than 2.5 microns, wherein the ink-receiving top layer comprises at least 50% of the total solids by weight, such that the water-soluble salt of a multivalent metal cation is able to diffuse into the ink-receiving top layer, the method further comprising drying the coating and optionally calendering the coating. Also disclosed is inkjet media made from such method and a method of printing using such inkjet media.Type: GrantFiled: September 14, 2007Date of Patent: August 4, 2009Assignee: Eastman Kodak CompanyInventors: Thomas J. Dannhauser, Douglas E. Bugner, Sharon R. Girolmo
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Publication number: 20090074995Abstract: A method of manufacturing an ink-receiving medium comprising the steps of providing a support, treating the support with a salt of a multivalent metal cation, and coating upon one or each side of the support at least one porous ink-receiving top layer from an aqueous coating composition consisting of non-cationic components, wherein the non-cationic components comprise a binder and anionic particles of average particle size less than 2.5 microns, wherein the ink-receiving top layer comprises at least 50% of the total solids by weight, such that the water-soluble salt of a multivalent metal cation is able to diffuse into the ink-receiving top layer, the method further comprising drying the coating and optionally calendering the coating. Also disclosed is inkjet media made from such method and a method of printing using such inkjet media.Type: ApplicationFiled: September 14, 2007Publication date: March 19, 2009Inventors: Thomas J. Dannhauser, Douglas E. Bugner, Sharon R. Girolmo
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Patent number: 6737229Abstract: A reversal photographic element comprising a support and, coated on said support, at least one image recording emulsion layer comprised of: a) a light sensitive silver halide imaging emulsion; and b) a non-image forming silver halide emulsion having an average grain size less than 0.3 &mgr;m and which comprises at least 13 percent of the total silver in the image recording layer, wherein the non-image forming silver halide emulsion comprises at least 1 mole percent iodide, and the iodide mole percentage of the non-image forming silver halide emulsion is equal to or higher than that of the imaging emulsion. The combination of the imaging emulsion and a higher iodide concentration non-imaging emulsion in an imaging layer gives an increase in interlayer interimage effects, increasing the color of the film.Type: GrantFiled: July 18, 2002Date of Patent: May 18, 2004Assignee: Eastman Kodak CompanyInventors: Thomas J. Dannhauser, Keath T. Chen
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Publication number: 20040013986Abstract: A reversal photographic element comprising a support and, coated on said support, at least one image recording emulsion layer comprised of: a) a light sensitive silver halide imaging emulsion; and b) a non-image forming silver halide emulsion having an average grain size less than 0.3 &mgr;m and which comprises at least 13 percent of the total silver in the image recording layer, wherein the non-image forming silver halide emulsion comprises at least 1 mole percent iodide, and the iodide mole percentage of the non-image forming silver halide emulsion is equal to or higher than that of the imaging emulsion. The combination of the imaging emulsion and a higher iodide concentration non-imaging emulsion in an imaging layer gives an increase in interlayer interimage effects, increasing the color of the film.Type: ApplicationFiled: July 18, 2002Publication date: January 22, 2004Applicant: Eastman Kodak CompanyInventors: Thomas J. Dannhauser, Keath T. Chen
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Patent number: 6521400Abstract: A multilayer color reversal photographic film element is described containing at least two silver halide photographic emulsion layers and a compound of the formula F-1: wherein A, B, C, and D are independently substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic substituents, which may where structurally possible together form a ring or rings; where at least one of A, B, C, and D is of the formula F-2: wherein R1 and R2 are independently either hydrogen or substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic substituents, which may where structurally possible form a ring with other substituents; R3 is a substituted or unsubstituted aliphatic, alicyclic, aromatic or heterocyclic substituent which may where structurally possible form a ring with other substituents, L is a bivalent linking or timing group attached to the carbonyl moiety via a heteroatom, n varies from 0-2; and INH is a silver development inhibitor attached either tType: GrantFiled: June 8, 2000Date of Patent: February 18, 2003Assignee: Eastman Kodak CompanyInventors: Thomas J. Dannhauser, Phillip D. Knight, Thomas R. Welter
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Patent number: 5620837Abstract: This invention provides a color silver halide photographic element comprising a support having situated thereon a red light-sensitive, cyan dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; a green light-sensitive, magenta dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; and a blue light-sensitive, yellow dye-forming unit comprising a photosensitive silver halide emulsion layer and an image dye-forming coupler; wherein at least one of the dye-forming units comprises two or more emulsion layers spectrally sensitized to the same region of the visible spectrum, but exhibiting different photographic sensitivities, each such emulsion layer containing an image dye-forming coupler wherein at least one, but not all, of the emulsion layers of the dye-forming unit contains the hydrolyzed or unhydrolyzed form of a benzazolium compound represented by formula (I): ##STR1##Type: GrantFiled: December 28, 1995Date of Patent: April 15, 1997Assignee: Eastman Kodak CompanyInventors: Sang H. Kim, Arlyce T. Bowne, Thomas J. Dannhauser
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Patent number: 5543283Abstract: The invention describes silver halide packet emulsion grains or crystals that are conventionally precipitated using gelatin of a given isoelectric pH, surrounded by a layer of gelatin-grafted-polymer particles wherein the grafted gelatin has a different isoelectric pH and the said gelatin-grafted-polymer particles are optionally chemically bonded to the gelatin surrounding the silver halide microcrystals. Such packet emulsions can form the basis for a mixed-packet color photographic system.Type: GrantFiled: November 30, 1994Date of Patent: August 6, 1996Assignee: Eastman Kodak CompanyInventors: Mark A. Whitson, John D. Lewis, Tienteh Chen, Thomas J. Dannhauser, Pranab Bagchi
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Patent number: 5503972Abstract: This invention describes the use of gelatin-grafted-polymer particles as peptizers for the preparation of silver halide photographic emulsions, whereby the gelatin-grafted-polymer particles remain attached to the AgX crystals after preparation of the emulsions. In an embodiment of this invention, the core polymer particles are loaded with photographically useful agents. When the photographic agent is a dye-forming coupler, multicolor mixed-packet systems can be constructed using the packet emulsions prepared in the manner of this invention.Type: GrantFiled: April 13, 1995Date of Patent: April 2, 1996Assignee: Eastman Kodak CompanyInventors: John D. Lewis, Mark A. Whitson, Thomas J. Dannhauser, Tienteh Chen, Pranab Bagchi
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Patent number: 5441865Abstract: This invention describes the use of gelatin-grafted-polymer particles as peptizers for the preparation of silver halide photographic emulsions, whereby the gelatin-grafted-polymer particles remain attached to the AgX crystals after preparation of the emulsions. In an embodiment of this invention, the core polymer particles are loaded with photographically useful agents. When the photographic agent is a dye-forming coupler, multicolor mixed-packet systems can be constructed using the packet emulsions prepared in the manner of this invention.Type: GrantFiled: January 7, 1993Date of Patent: August 15, 1995Assignee: Eastman Kodak CompanyInventors: John D. Lewis, Mark A. Whitson, Thomas J. Dannhauser, Tienteh Chen, Pranab Bagchi
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Patent number: 5399480Abstract: The invention describes silver halide packet emulsion grains or crystals that are conventionally precipitated using gelatin of a given isoelectric pH, surrounded by a layer of gelatin-grafted-polymer particles wherein the grafted gelatin has a different isoelectric pH and the said gelatin-grafted-polymer particles are optionally chemically bonded to the gelatin surrounding the silver halide microcrystals. Such packet emulsions can form the basis for a mixed-packet color photographic system.Type: GrantFiled: September 14, 1993Date of Patent: March 21, 1995Assignee: Eastman Kodak CompanyInventors: Mark A. Whitson, John D. Lewis, Tienteh Chen, Thomas J. Dannhauser, Pranab Bagchi