Patents by Inventor C. Geoffrey Allen

C. Geoffrey Allen 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).

  • Patent number: 10563079
    Abstract: An ink composition including a metal nanoparticle; at least one aromatic hydrocarbon solvent, wherein the at least one aromatic hydrocarbon solvent is compatible with the metal nanoparticles; at least one aliphatic hydrocarbon solvent, wherein the at least one aliphatic hydrocarbon solvent is compatible with the metal nanoparticles; wherein the ink composition has a metal content of greater than about 45 percent by weight, based upon the total weight of the ink composition; wherein the ink composition has a viscosity of from about 5 to about 30 centipoise at a temperature of about 20 to about 30° C. A process for preparing the ink composition. A process for printing the ink composition comprising pneumatic aerosol printing.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: February 18, 2020
    Assignee: Xerox Corporation
    Inventors: Pedram Salami, Ping Liu, C. Geoffrey Allen, Naveen Chopra, Kurt I. Halfyard
  • Publication number: 20190390073
    Abstract: A composition including at least one component selected from the group consisting of a curable monomer and a curable oligomer; at least one photoinitiator that absorbs at an ultraviolet light-emitting diode wavelength; and at least one photoinitiator that does not absorb radiation at the ultraviolet light-emitting diode wavelength. A process of digital offset printing including applying a composition onto a re-imageable imaging member surface at an ink take up temperature, the re-imageable imaging member having dampening fluid disposed thereon; forming an ink image; transferring the ink image from the re-imageable surface of the imaging member to a printable substrate at an ink transfer temperature.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 26, 2019
    Inventors: C. Geoffrey Allen, Carolyn Moorlag, Aurelian Valeriu Magdalinis, Biby Esther Abraham, Jonathan Siu-Chung Lee
  • Publication number: 20190390072
    Abstract: An ink composition including at least one component selected from the group consisting of a curable monomer and a curable oligomer; at least one non-radiation curable poly-alpha-olefin; at least one photoinitiator that absorbs at an ultraviolet light-emitting diode wavelength; and an optional colorant. A process of digital offset printing including applying an ink composition onto a re-imageable imaging member surface at an ink take up temperature, the re-imageable imaging member having dampening fluid disposed thereon; forming an ink image; transferring the ink image from the re-imageable surface of the imaging member to a printable substrate at an ink transfer temperature; wherein the ink composition comprises at least one component selected from the group consisting of a curable monomer and a curable oligomer; at least one non-radiation curable poly-alpha-olefin; at least one photoinitiator that absorbs at an ultraviolet light-emitting diode wavelength; and an optional colorant.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 26, 2019
    Inventors: C. Geoffrey Allen, Carolyn Moorlag, Aurelian Valeriu Magdalinis, Biby Esther Abraham, Jonathan Siu-Chung Lee
  • Publication number: 20190283395
    Abstract: An ink composition for use in digital offset printing including at least one component selected from the group consisting of a curable monomer and a curable oligomer; an optional dispersant; an optional photoinitiator; and at least one non-radiation curable additive, wherein the non-radiation curable additive is a detergent or an emulsifying agent, or wherein the non-radiation curable additive functions as a detergent or emulsifying agent when in the presence of a cleaning fluid, and wherein the non-radiation curable additive is a solid at a temperature of from about 20° C. to about 40° C.
    Type: Application
    Filed: March 14, 2018
    Publication date: September 19, 2019
    Inventors: C. Geoffrey Allen, Carolyn Moorlag, Aurelian Valeriu Magdalinis, Biby Esther Abraham, Jonathan Siu-Chung Lee
  • Publication number: 20190270897
    Abstract: An ink composition for use in digital offset printing including at least one component selected from the group consisting of a curable monomer and a curable oligomer; an optional colorant; an optional dispersant; an optional photoinitiator; and at least one non-radiation curable additive, wherein the non-radiation curable additive is a solid at a temperature of from about 20° C. to about 40° C. A process of digital offset printing including applying the ink composition onto a re-imageable imaging member surface at an ink take up temperature, the re-imageable imaging member having dampening fluid disposed thereon; forming an ink image; transferring the ink image from the re-imageable surface of the imaging member to a printable substrate at an ink transfer temperature.
    Type: Application
    Filed: March 2, 2018
    Publication date: September 5, 2019
    Inventors: C. Geoffrey Allen, Carolyn Moorlag, Aurelian Valeriu Magdalinis, Biby Esther Abraham, Jonathan Siu-Chung Lee
  • Patent number: 10323154
    Abstract: The present disclosure is directed to a white ink composition for use in digital offset printing, including a first white colorant including a first plurality of white pigment particles, wherein an average diameter of at least about 40% of the first plurality of white pigment particles is in a range of about 250 nanometers to about 350 nanometers, a second white colorant including a second plurality of white pigment particles, wherein an average diameter of at least about 40% of the second plurality of white pigment particles is in a range of about 350 nanometers to about 550 nanometers, at least one dispersant, at least one component selected from a curable monomer or a curable oligomer, and a photo-initiator. Also provided is a method of digital offset printing using the white ink composition of the present disclosure.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: June 18, 2019
    Assignee: XEROX CORPORATION
    Inventors: Mihaela Maria Birau, C. Geoffrey Allen, Aurelian Valeriu Magdalinis
  • Patent number: 10308827
    Abstract: A curable ink including at least one monomer, oligomer, or prepolymer; an optional photoinitiator; an optional colorant; and amide gellant having a molecular weight of from about 800 to about 2,500 g/mole; wherein the ink has an onset of gelation defined by the glass transition of the low molecular weight amide gellant according to the relationship Onset of Gelation (K)=(Constant) Tg of gellant (K); wherein the Constant is less than 1.5. A process for printing a three-dimensional article including providing a curable ink; depositing the curable ink in one or more layers; and curing the deposited ink to form the three-dimensional object.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: June 4, 2019
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Barkev Keoshkerian, Carolyn Moorlag, C. Geoffrey Allen, Marcel P. Breton, Gordon Sisler
  • Patent number: 10259956
    Abstract: A curable ink composition for forming a three-dimensional (3D) object via a digital additive manufacturing system is provided. The composition may comprise greater than about 30 weight % of one or more oligomers, at least two monomers comprising a lowest viscosity monomer and a highest viscosity monomer, one or more photoinitiators, and optionally, one or more additives. The ratio of the weight % of the total amount of oligomers to the weight % of the total amount of monomers may be at least about 0.5 and the ratio of the weight % of the lowest viscosity monomer to the weight % of the highest viscosity monomer may be at least about 5.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: April 16, 2019
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Gordon Sisler, Saleh Jiddawi, C. Geoffrey Allen, Carolyn Moorlag
  • Patent number: 10214655
    Abstract: A metal nanoparticle ink dispersion is made by mixing ingredients comprising: a first solvent being nonpolar and having a boiling point above 160° C. at 1 atmosphere pressure; a second solvent having a boiling point above 230° C. at 1 atmosphere pressure, the second organic solvent being an aromatic hydrocarbon and having a higher boiling point than the first hydrocarbon solvent; and a plurality of metal nanoparticles. A method of printing the metal nanoparticle ink dispersion is also disclosed.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: February 26, 2019
    Assignee: XEROX CORPORATION
    Inventors: Ping Liu, Michelle Chrétien, Biby Esther Abraham, Cuong Vong, C. Geoffrey Allen, Pedram Salami
  • Patent number: 10113076
    Abstract: The disclosed embodiments are directed to a composition of an inverse emulsion acrylate ink for use in variable data digital lithographic image forming devices and methods for preparing and using the ink. The disclosed inverse emulsion acrylate ink includes an acrylate monomer, oligomer, polymer, or mixtures thereof that is a continuous phase, and water dispersed as an emulsion in the continuous acrylate phase. The disclosed inverse emulsion acrylate ink includes one or more of a color pigment component, a rheology modifying agent, a stabilizing agent, and a photoinitiator component. The water may be supplemented with a surfactant to lower a surface tension of the water.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: October 30, 2018
    Assignee: XEROX CORPORATION
    Inventors: Carolyn Moorlag, Marcel Breton, C. Geoffrey Allen, Jenny Eliyahu
  • Publication number: 20180215135
    Abstract: Compatible acrylate ink sets include an acrylate ink composition having 30% or less by weight pigment, 10% or less dispersant, between 40% and 80% acrylate, 12% or less photoinitiator, a viscosity between 5×105 and 3×107 cps at 35° C., and a 60 second tack between 25 and 50 g-m at 35° C.
    Type: Application
    Filed: March 26, 2018
    Publication date: August 2, 2018
    Inventors: C. Geoffrey Allen, Mihaela Maria Birau, Carolyn Moorlag, Aurelian Valeriu Magdalinis
  • Patent number: 9956757
    Abstract: Compatible acrylate ink sets include acrylate ink composition having 30% or less by weight pigment, 10% or less dispersant, between 40% and 80% acrylate, 12% or less photoinitiator, a viscosity between 5×105 and 3×107 cps at 35° C., and a 60 second tack between 25 and 50 g-m at 35° C.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: May 1, 2018
    Assignee: XEROX CORPORATION
    Inventors: C. Geoffrey Allen, Mihaela Maria Birau, Carolyn Moorlag, Aurelian Valeriu Magdalinis
  • Publication number: 20180104913
    Abstract: A support material for use in additive manufacturing includes greater than about 30 weight percent up to about 70 weight percent of a C12 to C18 fatty alcohol ethoxylate and about 30 weight percent to about 70 weight percent of a C16 to C22 fatty alcohol, a transition temperature measured as the temperature immediately before phase change, based on viscosity measurement, is less than about 65° C. A system for additive manufacturing includes such a support material and a build material, the ratio of C12 to C18 fatty alcohol ethoxylate to C16 to C22 fatty alcohol is selected for property matching of the support material to the build material. A method of additive manufacturing includes providing such a system and printing via an inkjet printer the support material and the build material to provide a precursor to a three-dimensional printed article.
    Type: Application
    Filed: October 13, 2016
    Publication date: April 19, 2018
    Inventors: Naveen Chopra, Baharak Bakhshaei, Marcel P. Breton, Gordon Sisler, Carolyn Moorlag, Saleh Jiddawi, Jonathan Siu-Chung Lee, C. Geoffrey Allen
  • Publication number: 20180105705
    Abstract: A support material for use in additive manufacturing includes greater than about 30 weight percent up to about 70 weight percent of a C12 to C18 fatty alcohol ethoxylate, about 30 weight percent to about 70 weight percent of a C16 to C22 fatty alcohol, and a tackifier, a transition temperature measured as the temperature immediately before phase change, based on viscosity measurement, is less than about 65° C. A system for additive manufacturing includes such a support material and a build material, the ratio of C12 to C18 fatty alcohol ethoxylate to C16 to C22 fatty alcohol is selected for property matching of the support material to the build material. A method of additive manufacturing includes providing such a system and printing via an inkjet printer the support material and the build material to provide a precursor to a three-dimensional printed article.
    Type: Application
    Filed: October 13, 2016
    Publication date: April 19, 2018
    Inventors: Naveen Chopra, Baharak Bakhshaei, Carolyn Moorlag, C. Geoffrey Allen, Mandakini Kanungo, Santokh S. Badesha, Seemit Praharaj
  • Publication number: 20180100073
    Abstract: An ink for use in 3D printing including at least one monomer, and an optional oligomer, and a photoinitiator, and the ink has a high glass transition temperature (Tg) and wide range of viscosity. The 3D ink composition, and embodiments, maintains a homogeneous and easily processed consistency when used in a multi-jet modeling printing process.
    Type: Application
    Filed: October 11, 2016
    Publication date: April 12, 2018
    Inventors: NAVEEN CHOPRA, Baharak Bakhshaei, MARCEL P. BRETON, GORDON SISLER, CAROLYN MOORLAG, SALEH JIDDAWI, JONATHAN SIU-CHUNG LEE, C GEOFFREY ALLEN
  • Publication number: 20180100075
    Abstract: A curable ink composition for forming a three-dimensional (3D) object via a digital additive manufacturing system is provided. The composition may comprise greater than about 30 weight % of one or more oligomers, at least two monomers comprising a lowest viscosity monomer and a highest viscosity monomer, one or more photoinitiators, and optionally, one or more additives. The ratio of the weight % of the total amount of oligomers to the weight % of the total amount of monomers may be at least about 0.5 and the ratio of the weight % of the lowest viscosity monomer to the weight % of the highest viscosity monomer may be at least about 5.
    Type: Application
    Filed: October 11, 2016
    Publication date: April 12, 2018
    Inventors: Naveen Chopra, Gordon Sisler, Saleh Jiddawi, C. Geoffrey Allen, Carolyn Moorlag
  • Publication number: 20180100074
    Abstract: An ink for use in 3D printing including at least one monomer, and an optional oligomer, and a photoinitiator, and the ink has a high glass transition temperature (Tg) and wide range of viscosity. The 3D ink composition, and embodiments, maintains a homogeneous and easily processed consistency when used in a multi-jet modeling printing process.
    Type: Application
    Filed: October 11, 2016
    Publication date: April 12, 2018
    Inventors: Naveen Chopra, Baharak Bakhshaei, MARCEL P. BRETON, GORDON SISLER, CAROLYN MOORLAG, SALEH JIDDAWI, JONATHAN SIU-CHUNG LEE, C GEOFFREY ALLEN
  • Publication number: 20180074399
    Abstract: An ink composition useful for digital offset printing applications includes a colorant and a high viscosity thickening agent. A process for variable data lithographic printing includes applying a dampening fluid to an imaging member surface; forming a latent image by evaporating the dampening fluid from selective locations on the imaging member surface to form hydrophobic non-image areas and hydrophilic image areas; developing the latent image by applying an ink composition comprising an ink component to the hydrophilic image areas, the ink composition comprising a high viscosity thickening agent to raise the viscosity of the composition from about 1.05 to about 2 times higher while maintaining excellent transfer to a substrate at low temperatures.
    Type: Application
    Filed: September 12, 2016
    Publication date: March 15, 2018
    Inventors: Marcel P. BRETON, James D. MAYO, Biby E. ABRAHAM, Aurelian Valeriu MAGDALINIS, C. Geoffrey ALLEN, Carolyn MOORLAG, Jonathan Siu-Chung LEE
  • Publication number: 20180074398
    Abstract: An ink composition useful for digital offset printing applications includes a colorant and a high viscosity thickening agent. A process for variable data lithographic printing includes applying a dampening fluid to an imaging member surface; forming a latent image by evaporating the dampening fluid from selective locations on the imaging member surface to form hydrophobic non-image areas and hydrophilic image areas; developing the latent image by applying an ink composition comprising an ink component to the hydrophilic image areas, the ink composition comprising a high viscosity thickening agent to raise the viscosity of the composition from about 1.05 to about 2 times higher while maintaining excellent transfer to a substrate at low temperatures.
    Type: Application
    Filed: September 12, 2016
    Publication date: March 15, 2018
    Inventors: James D. MAYO, Aurelian Valeriu MAGDALINIS, Timothy D. STOWE, C. Geoffrey ALLEN, Biby E. ABRAHAM, Marcel P. BRETON, Jonathan Siu-Chung LEE
  • Publication number: 20180072899
    Abstract: An ink composition useful for digital offset printing applications includes a colorant and a high viscosity thickening agent. The ink is formulated to incorporate a gellant into the ink set to help meet the requirement of two different viscosity or temperature pairs at two different stages of the ink delivery process. In lithography imaging a bulk ink is first transferred onto an anilox roll and then onto the imaging cylinder blanket. The first transfer from bulk ink to anilox roll requires the ink to have a low viscosity while the transfer from roll to imaging blanket requires a high viscosity. The addition of the gellant will increase the viscosity difference within the allowable temperature range thus increasing process latitude and robustness.
    Type: Application
    Filed: September 12, 2016
    Publication date: March 15, 2018
    Inventors: C. Geoffrey ALLEN, Marcel P. BRETON, Naveen CHOPRA, Aurelian Valeriu MAGDALINIS, Jonathan Siu-Chung LEE, Biby E. ABRAHAM, James D. MAYO