Patents by Inventor James Craig Minor

James Craig Minor 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: 20220373917
    Abstract: A toner composition having improved toner usage efficiency, wherein toner particles having an average size range of 1-25 ?m may be mixed with an extra particulate additive package including a first small silica surface treated with both a silane and an aminosilane having a primary particle size of about 5 nm-20 nm, a second fumed silica having a primary particle size of 30 nm-60 nm, a third silica having a primary particle size of about 70 nm-120 nm, an electro-conductive titania having a primary particle size of 30 nm-60 nm and an acicular titania having a size of about 1.6 ?m to 1.7 ?m in length and about 130 nm in diameter. An alternative embodiment of the extra particulate additive package does not include a third silica having a primary particle size of about 70 nm-120 nm.
    Type: Application
    Filed: August 3, 2022
    Publication date: November 24, 2022
    Inventors: KASTURI RANGAN SRINIVASAN, RUDOLPH WAYNE HROBSKY, JAMES CRAIG MINOR, DINESH TYAGI
  • Publication number: 20220317585
    Abstract: Provided is a toner blend composition comprising a first pigmented toner and a second toner that is devoid of any pigment additive, i.e., a ‘non-pigmented or clear toner’. The non-pigmented or clear toner is about 1% to about 15% by weight of the toner blend composition. The resulting inventive toner blend composition surprisingly exhibits similar print density on a page compared to a fully pigmented toner. Moreover, this toner blend composition exhibits improvement in toner usage per page, thus lowering toner cost compared to a fully pigmented toner. The non-pigmented or clear toner may be used in combination with either a monochrome or conventional toner using a carbon black pigment, or a chemically processed toners (‘CPT”) toners using a black pigment, magenta pigment, yellow pigment or a cyan pigment.
    Type: Application
    Filed: March 31, 2021
    Publication date: October 6, 2022
    Inventors: KASTURI RANGAN SRINIVASAN, JAMES CRAIG MINOR
  • Publication number: 20220317587
    Abstract: Provided is a toner blend composition comprising a first pigmented toner and a second toner that is devoid of any pigment additive, i.e., a ‘non-pigmented or clear toner’. The non-pigmented or clear toner is about 1% to about 15% by weight of the toner blend composition. The resulting inventive toner blend composition surprisingly exhibits similar print density on a page compared to a fully pigmented toner. Moreover, this toner blend composition exhibits improvement in toner usage per page, thus lowering toner cost compared to a fully pigmented toner. The non-pigmented or clear toner may be used in combination with either a monochrome or conventional toner using a carbon black pigment, or a chemically processed toners (‘CPT”) toners using a black pigment, magenta pigment, yellow pigment or a cyan pigment.
    Type: Application
    Filed: March 16, 2022
    Publication date: October 6, 2022
    Inventors: KASTURI RANGAN SRINIVASAN, JAMES CRAIG MINOR
  • Publication number: 20220317586
    Abstract: Provided is a toner blend composition comprising a first pigmented toner and a second toner that is devoid of any pigment additive, i.e., a ‘non-pigmented or clear toner’. The non-pigmented or clear toner is about 1% to about 15% by weight of the toner blend composition. The resulting inventive toner blend composition surprisingly exhibits similar print density on a page compared to a fully pigmented toner. Moreover, this toner blend composition exhibits improvement in toner usage per page, thus lowering toner cost compared to a fully pigmented toner. The non-pigmented or clear toner may be used in combination with either a monochrome or conventional toner using a carbon black pigment, or a chemically processed toners (‘CPT”) toners using a black pigment, magenta pigment, yellow pigment or a cyan pigment.
    Type: Application
    Filed: March 31, 2021
    Publication date: October 6, 2022
    Inventors: KASTURI RANGAN SRINIVASAN, JAMES CRAIG MINOR
  • Publication number: 20220197173
    Abstract: A toner composition having improved toner usage efficiency, wherein toner particles having an average size range of 1-25 ?m may be mixed with an extra particulate additive package including a first small silica surface treated with both a silane and an aminosilane having a primary particle size of about 5 nm-20 nm, a second fumed silica having a primary particle size of 30 nm-60 nm, a third silica having a primary particle size of about 70 nm-120 nm, an electro-conductive titania having a primary particle size of 30 nm-60 nm and an acicular titania having a size of about 1.6 ?m to 1.7 ?m in length and about 130 nm in diameter. An alternative embodiment of the extra particulate additive package does not include a third silica having a primary particle size of about 70 nm-120 nm.
    Type: Application
    Filed: March 16, 2021
    Publication date: June 23, 2022
    Inventors: KASTURI RANGAN SRINIVASAN, RUDOLPH WAYNE HROBSKY, JAMES CRAIG MINOR, DINESH TYAGI
  • Publication number: 20220197170
    Abstract: A toner composition having improved toner usage efficiency, wherein toner particles having an average size range of 1-25 ?m may be mixed with an extra particulate additive package including a first small silica surface treated with both a silane and an aminosilane having a primary particle size of about 5 nm-20 nm, a second fumed silica having a primary particle size of 30 nm-60 nm, a third silica having a primary particle size of about 70 nm-120 nm, an electro-conductive titania having a primary particle size of 30 nm-60 nm and an acicular titania having a size of about 1.6 ?m to 1.7 ?m in length and about 130 nm in diameter. An alternative embodiment of the extra particulate additive package does not include a third silica having a primary particle size of about 70 nm-120 nm.
    Type: Application
    Filed: December 22, 2020
    Publication date: June 23, 2022
    Inventors: KASTURI RANGAN SRINIVASAN, RUDOLPH WAYNE HROBSKY, JAMES CRAIG MINOR, DINESH TYAGI
  • Publication number: 20220197172
    Abstract: A toner composition having improved toner usage efficiency, wherein toner particles having an average size range of 1-25 ?m may be mixed with an extra particulate additive package including a first small silica surface treated with both a silane and an aminosilane having a primary particle size of about 5 nm-20 nm, a second fumed silica having a primary particle size of 30 nm-60 nm, a third silica having a primary particle size of about 70 nm-120 nm, an electro-conductive titania having a primary particle size of 30 nm-60 nm and an acicular titania having a size of about 1.6 ?m to 1.7 ?m in length and about 130 nm in diameter. An alternative embodiment of the extra particulate additive package does not include a third silica having a primary particle size of about 70 nm-120 nm.
    Type: Application
    Filed: March 16, 2021
    Publication date: June 23, 2022
    Inventors: KASTURI RANGAN SRINIVASAN, RUDOLPH WAYNE HROBSKY, JAMES CRAIG MINOR, DINESH TYAGI
  • Publication number: 20220197171
    Abstract: A toner composition having improved toner usage efficiency, wherein toner particles having an average size range of 1-25 ?m may be mixed with an extra particulate additive package including a first small silica surface treated with both a silane and an aminosilane having a primary particle size of about 5 nm-20 nm, a second fumed silica having a primary particle size of 30 nm-60 nm, a third silica having a primary particle size of about 70 nm-120 nm, an electro-conductive titania having a primary particle size of 30 nm-60 nm and an acicular titania having a size of about 1.6 ?m to 1.7 ?m in length and about 130 nm in diameter. An alternative embodiment of the extra particulate additive package does not include a third silica having a primary particle size of about 70 nm-120 nm.
    Type: Application
    Filed: March 16, 2021
    Publication date: June 23, 2022
    Inventors: KASTURI RANGAN SRINIVASAN, RUDOLPH WAYNE HROBSKY, JAMES CRAIG MINOR, DINESH TYAGI
  • Publication number: 20190384199
    Abstract: A toner composition includes low and high molecular weight polyester resins. It also includes a release agent, such as a polyolefin wax, and a tri-block copolymer having a structure of the form A-b-B-b-A, wherein A is a hard block and B is a soft block. The hard block is styrene, while the soft block is butadiene/butylene. Upon partial hydrogenation, the copolymer provides improved dispersion, mobility control, and domain size of the release agent.
    Type: Application
    Filed: June 14, 2019
    Publication date: December 19, 2019
    Inventors: Ann P. Holloway, Rudolph Wayne Hrobsky, Michael Gordon Miller, James Craig Minor, Dinesh Tyagi
  • Publication number: 20170075246
    Abstract: A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system typically is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the magnetic carrier particles with surface additives before the magnetic carrier particles are mixed with the toner particles. Surface additives include but are not limited to silica, titania and alumina.
    Type: Application
    Filed: November 3, 2016
    Publication date: March 16, 2017
    Inventors: KASTURI RANGAN SRINIVASAN, LIGIA AURA BEJAT, MICHAEL ANTHONY BLASSINGAME, RICK OWEN JONES, BRANDON MICHAEL LIN, JAMES CRAIG MINOR
  • Publication number: 20170068179
    Abstract: A developer mix formulation having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by using magnetic carrier particles having surface additives on its surface. Surface additives include but are not limited to silica, titania and alumina.
    Type: Application
    Filed: November 21, 2016
    Publication date: March 9, 2017
    Inventors: KASTURI RANGAN SRINIVASAN, LIGIA AURA BEJAT, MICHAEL ANTHONY BLASSINGAME, RICK OWEN JONES, BRANDON MICHAEL LIN, JAMES CRAIG MINOR
  • Patent number: 9535353
    Abstract: A developer mix formulation having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by using magnetic carrier particles having surface additives on its surface. Surface additives include but are not limited to silica, titania and alumina.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 3, 2017
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Ligia Aura Bejat, Michael Anthony Blassingame, Rick Owen Jones, Brandon Michael Lin, James Craig Minor
  • Patent number: 9523932
    Abstract: A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system typically is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the magnetic carrier particles with surface additives before the magnetic carrier particles are mixed with the toner particles. Surface additives include but are not limited to silica, titania and alumina.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: December 20, 2016
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Ligia Aura Bejat, Michael Anthony Blassingame, Rick Owen Jones, Brandon Michael Lin, James Craig Minor
  • Publication number: 20160179026
    Abstract: A developer mix formulation having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by using magnetic carrier particles having surface additives on its surface. Surface additives include but are not limited to silica, titania and alumina.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 23, 2016
    Inventors: Kasturi Rangan Srinivasan, Ligia Aura Bejat, Michael Anthony Blassingame, Rick Owen Jones, Brandon Michael Lin, James Craig Minor
  • Publication number: 20160179022
    Abstract: A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system typically is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the magnetic carrier particles with surface additives before the magnetic carrier particles are mixed with the toner particles. Surface additives include but are not limited to silica, titania and alumina.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 23, 2016
    Inventors: Kasturi Rangan Srinivasan, Ligia Aura Bejat, Michael Anthony Blassingame, Rick Owen Jones, Brandon Michael Lin, James Craig Minor
  • Publication number: 20150370186
    Abstract: Wax dispersion and domain size can be effectively controlled by incorporating a small amount of a hybrid resin binder and or a wax compatibilizer in the toner formulation. Such toners show smaller wax domain size and improved fusing offset window, fusegrade and filming resistance, and therefore improved print quality and reliability. The hybrid resin contains a polyester unit via condensation reaction and a vinyl-based polymer unit via radical polymerization. The hybrid resin is highly compatible with the polyester resin binder, and at same time, can well accommodate low molecular weight polyolefin waxes in the vinyl polymer entity enabling a desirable smaller wax domain size. The wax compatibilizer is a thermoplastic styrenic block copolymer.
    Type: Application
    Filed: April 10, 2014
    Publication date: December 24, 2015
    Applicant: Lexmark International, Inc.
    Inventors: Yueping Fu, Lance Tisdale Hoshiko, James Craig Minor, Courtney Ann Weigel, Franklin Dilworth Zartman
  • Patent number: 7695882
    Abstract: The present invention relates to controlling the mass flow of toner in an image forming device or a toner cartridge. The toner composition includes extra particulate additives including a conductive additive. The extra particulate additives may also include relatively small silica particles or relatively large silica.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: April 13, 2010
    Assignee: Lexmark International, Inc.
    Inventors: Scott Moreland Broce, Robert Joseph Firmature, Yueping Fu, Matthew David Heid, Lance Tisdale Hoshiko, James Craig Minor, Karen Eileen Zrebiec
  • Publication number: 20080187856
    Abstract: The present invention relates to controlling the mass flow of toner in an image forming device or a toner cartridge. The toner composition includes extra particulate additives including a conductive additive. The extra particulate additives may also include relatively small silica particles or relatively large silica.
    Type: Application
    Filed: February 1, 2007
    Publication date: August 7, 2008
    Inventors: Scott Moreland Broce, Robert Joseph Firmature, Yueping Fu, Matthew David Heid, Lance Tisdale Hoshiko, James Craig Minor, Karen Eileen Zrebiec
  • Patent number: 6511709
    Abstract: A process for dip coating, particularly vertical dip coating, the topcoat layer onto fuser belts used in electrophotographic processes is disclosed. In this process, a C1-C4 alkanol, such as isopropyl alcohol is added to the solvent system for the fluorocarbon topcoat layer. The use of alcohols in this way provides an efficient and effective method and a topcoat layer which is smooth, uniform and has a good finish.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: January 28, 2003
    Assignee: Lexmark, International, Inc.
    Inventors: Johnathan Lee Barnes, Scott Moreland Broce, James Craig Minor, Jennifer Kaye Neely, Dat Quoc Nguyen, Kasturi Rangan Srinivasan, Mark Stephen Weisman, Jr.
  • Patent number: 6331372
    Abstract: Toner particulates include a first resin comprising a cross-linked copolymer; a second resin comprising a non-cross-linked copolymer; and a wax comprising an ethylene propylene copolymer. The cross-linked copolymer is a copolymer other than the wax comprising an ethylene propylene copolymer and the non-cross-linked polymer is a copolymer other than the wax comprising an ethylene propylene copolymer.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: December 18, 2001
    Assignee: Lexmark International, Inc.
    Inventors: Bryan Patrick Livengood, James Craig Minor, Michael Thomas Moore, John Melvin Olson, Minerva Piffarerio, Vincent Wen-Hwa Ting