Patents by Inventor Dinesh Tyagi

Dinesh Tyagi 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).

  • Publication number: 20070218195
    Abstract: The present invention provides a method of printing which includes providing a substrate having an inked surface. The inked surface is typically achieved using an offset lithographic printing press. A thermoplastic polymer powder is applied to the inked surface. The surface is then fused. An advantage of the prepared substrate is that there is reduced contamination of electrostatographic fusing systems when fused by heat and pressure fixing. Another aspect of the invention further provides a method of fusing a substrate having an inked surface wherein a thermoplastic powder has been applied to the inked surface prior to stacking the uncured offset prints.
    Type: Application
    Filed: March 16, 2006
    Publication date: September 20, 2007
    Inventors: Jerry Pickering, Xin Jin, Dinesh Tyagi, Kurt Jones
  • Publication number: 20070196151
    Abstract: The present invention is an electrostatographic reproduction apparatus which includes a primary imaging member for producing an electrostatic latent image on a receiver, a development station for applying toner particles to said latent image which forms a developed toner image on the receiver. A fuser assembly is included for fixing the developed toner image, to form a fused toner image on the receiver. A transport member is provided for transporting the receiver to or from the fuser assembly, the transport member having a substrate bearing an oil-absorbing layer that includes transparent aluminum inorganic particles of pseudo-boehmite, dispersed in an organic binder, and a wax having a melting point less the 100° C.
    Type: Application
    Filed: February 22, 2006
    Publication date: August 23, 2007
    Inventors: Wayne Ferrar, Douglas Garman, Dinesh Tyagi, Gary Bertram, Francisco Ziegelmuller
  • Publication number: 20070099103
    Abstract: The present invention is directed to an electrostatographic toner having a sulfone charge control agent having the structure X—SO2—Y wherein X is an alkyl or aromatic group and Y is an alkyl or aromatic group. The present invention is also directed to an electorstatographic developer containing the electrostatographic toner having a sulfone charge control agent having the structure X—SO2—Y wherein X is an alkyl or aromatic group and Y is an alkyl or aromatic group and carrier particles.
    Type: Application
    Filed: November 1, 2005
    Publication date: May 3, 2007
    Inventors: Robert Guistina, Dinesh Tyagi, Jason Morgan
  • Publication number: 20070039518
    Abstract: The smell of the printing medium and/or the printing format is at least influenced. At least one toner that contains at least one aromatic substance, or one ink, that contains at least one aromatic substance is applied to a printing medium. For this purpose, appropriate toners or inks and processes for their manufacture, as well as a printing machine for implementing an appropriate printing process, are introduced.
    Type: Application
    Filed: August 12, 2004
    Publication date: February 22, 2007
    Applicant: EASTMAN KODAK COMPANY
    Inventors: Detlef Schulze-hagenest, Frank-Michael Morgenweck, Domingo Rohde, Lars Seimetz, Dinesh Tyagi, Udo Draeger
  • Publication number: 20070031615
    Abstract: The invention relates to a printing media comprising a first side comprising a first exposed layer comprising a mixture of polyolefin and at least one member selected from the group consisting of polyolefin copolymers, amide containing polymers, and ester containing polymers, wherein a measured Tg of said exposed layer comprises a Tg of less than 5° C. and a second side comprising an a second exposed layer having an advancing contact angle with water of less than 90°.
    Type: Application
    Filed: August 4, 2005
    Publication date: February 8, 2007
    Inventors: Mridula Nair, Narasimharao Dontula, Michael Brickey, Terry Heath, Joseph Hoff, Tamara Jones, Daniel Leusch, Joseph Sedita, Cumar Sreekumar, Dinesh Tyagi
  • Patent number: 7169528
    Abstract: A process for the preparation of colored polymeric toner particles includes: forming an organic phase by dissolving an organic polymer and, optionally, one or more additives in a water-immiscible organic solvent; forming a dispersion by combining the organic phase with an aqueous phase comprising a particulate stabilizer, a colorant, and, optionally, a promoter, with the proviso that when the colorant is carbon black, it is an acidic carbon black having a pH less than 7; homogenizing the dispersion to form droplets containing the organic solvent, organic polymer, and colorant; removing the organic solvent from the droplets to form colored polymeric toner particles; and separating and drying the toner particles.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: January 30, 2007
    Assignee: Eastman Kodak Company
    Inventors: Hichang Yoon, Bret Martin Johnston, Dinesh Tyagi, Michael Thomas Regan
  • Publication number: 20060188801
    Abstract: The present invention is an electrostatographic toner that includes an organometallic complex of dimethyl sulfoxide with a metal salt as a charge control agent having the structure; (M+n)x ((CH3)2SO2)y (A?q)z where n, q, x and z are integers between 1 and 6, and y is an integer between 2 and 12. The present invention also includes a developer having a toner, an organometallic complex of dimethyl sulfoxide with a metal salt as a charge control agent having the structure; (M+n)x ((CH3)2SO2)y (A?q)z where n, q, x and z are integers between 1 and 6, and y is an integer between 2 and 12, and a carrier particle.
    Type: Application
    Filed: February 17, 2006
    Publication date: August 24, 2006
    Inventors: Robert Guistina, Jason Morgan, Dinesh Tyagi
  • Patent number: 7087355
    Abstract: Toner particles having at least one toner resin and at least one polyalkylene wax or a wax having a percent crystallinity of 80% or more are described. The wax that is present in the toner particles has a polydispersity of 2.0 or higher or a percent crystallinity of 80% or more, and also preferably has a number average molecular weight of about 2,000 or higher and/or a melting temperature onset of from about 115° C. to about 130° C. Development systems using the toner particles of the present invention are further described. Also, improvements in various properties associated with development systems are further described such as reduced toner dust levels as well as improved toner image abrasion resistance.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: August 8, 2006
    Assignee: Eastman Kodak Company
    Inventors: Robert D. Fields, Dinesh Tyagi
  • Patent number: 7088946
    Abstract: Adjusting a gloss for a print image by adjusting the cooling of the print image. Further, a toner for a printing press adjusting gloss by adjusting cooling includes 1% to 30% aliphatic hydrocarbons, aliphatic acids, aliphatic alcohols or their salts, or olefinic hydrocarbons.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: August 8, 2006
    Assignee: Eastman Kodak Company
    Inventors: Knut Behnke, Hans-Otto Krause, Frank-Michael Morgenweck, Domingo Rohde, Detlef Schulze-Hagenest, Lars Seimetz, Dinesh Tyagi
  • Patent number: 7074488
    Abstract: Branched monofunctional polysiloxanes are disclosed having the general formula: X-(Da)-(DbTc), wherein X-(Da) is a linear moiety and (DbTc) is a branched moiety; X a substituted or unsubstituted, monovalent or divalent hydrocarbon having a functional group; R5 and R6 are independently halogenated or unhalogenated monovalent hydrocarbon or substituted or unsubstituted divalent hydrocarbon; T is (R7)dSiO(4-d)/2 R7 is a substituted or unsubstituted monovalent hydrocarbon; wherein the branched polysiloxane is end-capped by R8 is a substituted or unsubstituted monovalent hydrocarbon; a is 1 to 300, b is 25 to 5000, c is 1 to 100, d is 0 or 1; and Tc is randomly distributed in the branched polysiloxane. Additionally, processes for preparing such polysiloxanes, and coating compositions comprising the same is provided. A fuser member and substrate comprising a branched monofunctional polysiloxane of the above formula are also disclosed.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: July 11, 2006
    Assignee: Eastman Kodak Company
    Inventors: Jerry A. Pickering, Dinesh Tyagi, David F. Cahill
  • Publication number: 20060147830
    Abstract: Toner particles having at least one toner resin and at least one polyalkylene wax or a wax having a percent crystallinity of 80% or more are described. The wax that is present in the toner particles has a polydispersity of 2.0 or higher or a percent crystallinity of 80% or more, and also preferably has a number average molecular weight of about 2,000 or higher and/or a melting temperature onset of from about 115° C. to about 130° C. Development systems using the toner particles of the present invention are further described. Also, improvements in various properties associated with development systems are further described such as reduced toner dust levels as well as improved toner image abrasion resistance.
    Type: Application
    Filed: March 6, 2006
    Publication date: July 6, 2006
    Inventors: Robert Fields, Dinesh Tyagi
  • Publication number: 20060127791
    Abstract: The use of a clear toner with a viscosity in the range of 6.2 Pa·s to 1.5 Pa·s at a temperature of 120° C. for creating a higher gloss value in the range of 28 to 47 at an angle of 60°.
    Type: Application
    Filed: February 8, 2006
    Publication date: June 15, 2006
    Inventors: Domingo Rohde, Detlef Schulze-Hagenest, Dinesh Tyagi
  • Publication number: 20060127784
    Abstract: Producing at least partially translucent packaging materials that contain natural dyes or pseudo-natural dyes, chlorophyll in particular. Natural dyes or pseudo-natural dyes are added to a toner and are applied to the packaging material in a printing step, preferably in an electrophotographic printing machine.
    Type: Application
    Filed: February 9, 2006
    Publication date: June 15, 2006
    Inventors: Detlef Schulze-Hagenest, Dinesh Tyagi, Udo Draeger
  • Publication number: 20060127151
    Abstract: At least one physical characteristic of a printed format on a printing medium and/or at least one physical characteristic of the printing medium is improved. At least one essentially colorless toner containing at least one substance that affects at least one physical characteristic, is applied to the printing medium and/or the printed format.
    Type: Application
    Filed: February 9, 2006
    Publication date: June 15, 2006
    Inventors: Detlef Schulze-Hagenest, Dinesh Tyagi, Udo Draeger
  • Patent number: 7058348
    Abstract: Producing an enhanced gloss electrophotographic toner image on a substrate by coating colored fusible toner particles supported on a substrate with a layer of clear toner containing an offset preventing wax, transporting the substrate bearing clear toner coated colored fusible toner particles through a fuser zone to fuse the fusible toner particles and produce a substrate bearing a fused clear coated toner image, and transporting the substrate bearing the clear coated fused toner image through downstream glossing device to re-fuse the fused toner image to increase the gloss of the previously fused toner image.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: June 6, 2006
    Assignee: Eastman Kodak Company
    Inventors: Muhammed Aslam, Dinesh Tyagi, Rodney R. Bucks
  • Patent number: 7056637
    Abstract: Toner particles are described containing at least one toner resin and at least one wax. The wax present in the toner particles has an average domain size of about 1 micron or less. Developer systems, two component and monocomponent, are further described as well development systems and methods for developing an electrostatic image.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: June 6, 2006
    Assignee: Eastman Kodak Company
    Inventors: Robert D. Fields, Dinesh Tyagi
  • Publication number: 20050266332
    Abstract: An oil-free process for forming a fused toner image on a receiver includes forming on a receiver, an image including toner particles that contain a non-crosslinked linear polymeric binder, a wax, and a colorant; and contacting the receiver bearing the toner particle image with a fuser member containing a support, a cushion layer overlying the support, and a release layer overlying the cushion layer. The release layer includes a cured fluorocarbon thermoplastic random copolymer, a cured aminosiloxane copolymer, and a zinc oxide particulate filler. The cured fluorocarbon thermoplastics random copolymer contains —(CH2CF2)x—, —(CF2CF(CF3)y—, and —(CF2CF2)z— subunits, wherein x is from 1 to 40 or 60 to 80 mole percent, y is from 10 to 90 mole percent, z is from 10 to 90 mole percent, and x+y+z equals 100 mole percent. The receiver in contact with the fuser member is subjected to conditions effective in the absence of a release oil for fixing the toner particle image to the receiver.
    Type: Application
    Filed: May 28, 2004
    Publication date: December 1, 2005
    Inventors: Joseph Pavlisko, Jiann-Hsing Chen, Dinesh Tyagi, Muhammed Aslam
  • Publication number: 20050244201
    Abstract: A method for producing an enhanced gloss electrophotographic toner image on a substrate by passing a substrate bearing a fusible toner particle image through a fusing zone to produce a substrate bearing a fused toner image, passing the substrate bearing the fused toner image through a cooling zone to produce a cooled substrate bearing the fused toner mage and passing the cooled substrate bearing the fused toner image to a release zone where a cooled substrate bearing an enhanced gloss image is released, wherein the fusible toner particle image is covered by a clear toner layer.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 3, 2005
    Inventors: Muhammed Aslam, Dinesh Tyagi, Rodney Bucks
  • Publication number: 20050244738
    Abstract: A process for the preparation of colored polymeric toner particles includes: forming an organic phase by dissolving an organic polymer and, optionally, one or more additives in a water-immiscible organic solvent; forming a dispersion by combining the organic phase with an aqueous phase comprising a particulate stabilizer, a colorant, and, optionally, a promoter, with the proviso that when the colorant is carbon black, it is an acidic carbon black having a pH less than 7; homogenizing the dispersion to form droplets containing the organic solvent, organic polymer, and colorant; removing the organic solvent from the droplets to form colored polymeric toner particles; and separating and drying the toner particles.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 3, 2005
    Inventors: Hichang Yoon, Bret Johnston, Dinesh Tyagi, Michael Regan
  • Publication number: 20050244202
    Abstract: Producing an enhanced gloss electrophotographic toner image on a substrate by coating colored fusible toner particles supported on a substrate with a layer of clear toner containing an offset preventing wax, transporting the substrate bearing clear toner coated colored fusible toner particles through a fuser zone to fuse the fusible toner particles and produce a substrate bearing a fused clear coated toner image, and transporting the substrate bearing the clear coated fused toner image through downstream glossing device to re-fuse the fused toner image to increase the gloss of the previously fused toner image.
    Type: Application
    Filed: July 22, 2004
    Publication date: November 3, 2005
    Inventors: Muhammed Aslam, Dinesh Tyagi, Rodney Bucks