Patents by Inventor David Glenn Black

David Glenn Black 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: 10761443
    Abstract: A charge transport molecule contains four radical polymerizable functional groups of the general structure exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are hydrogen atoms, and R5 and R6 contain a spacer group and a radical polymerizable functional group wherein the spacer group of R1, R2, R5 and R6 is an ethyl group and the radical polymerizable functional group of R1, R2, R5 and R6 is an acrylate group.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: September 1, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Weimei Luo, David Glenn Black, Mark Thomas Bellino
  • Patent number: 10732528
    Abstract: An overcoat layer for an organic photoconductor drum includes a curable composition having about 20 to about 80 percent by weight of a charge transport molecule containing four radical polymerizable functional groups as exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are hydrogen atoms, and R5 and R6 contain a spacer group and a radical polymerizable functional group. The curable composition may also include a non-radical polymerizable additive, such as a surfactant, and/or a curing agent.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: August 4, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Weimei Luo, David Glenn Black, Mark Thomas Bellino
  • Patent number: 10684565
    Abstract: An improved overcoat layer for an organic photoconductor drum used in an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a charge transport molecule containing four radical polymerizable hydrophilic functional groups containing an oxygen atom of the general structure shown below: wherein R1 and R2 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom, R3 and R4 are a non-radical polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom. The curable composition may also contain at least one optional curing agent. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its service life.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: June 16, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: David Glenn Black, Mark Thomas Bellino, Weimei Luo
  • Patent number: 10495991
    Abstract: A method to make an improved organic photoconductor drum of an electrophotographic image forming device is provided. The improved organic photoconductor drum is prepared using a curable composition including a charge transport molecule containing four radical polymerizable functional groups containing an oxygen atom of the general structure shown below: wherein R1 and R2 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom, R3 and R4 are a non-radical polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom. The curable composition may also contain at least one optional curing agent.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: December 3, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: David Glenn Black, Mark Thomas Bellino, Weimei Luo
  • Patent number: 10481512
    Abstract: An improved organic photoconductor drum used in an electrophotographic image forming device and method to make the same is provided. The organic photoconductor drum contains a protective overcoat. The protective overcoat is prepared from a curable composition including a charge transport molecule containing four radical polymerizable hydrophilic functional groups containing an oxygen atom of the general structure shown below: where R1 and R2 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom, R3 and R4 are a non-radical polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom. The curable composition may also contain at least one curing agent. This organic photoconductor drum has excellent wear resistance without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its service life.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: November 19, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: David Glenn Black, Mark Thomas Bellino, Weimei Luo
  • Publication number: 20190271923
    Abstract: An overcoat layer for an organic photoconductor drum includes a curable composition having about 20 to about 80 percent by weight of a charge transport molecule containing four radical polymerizable functional groups as exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are hydrogen atoms, and R5 and R6 contain a spacer group and a radical polymerizable functional group. The curable composition may also include a non-radical polymerizable additive, such as a surfactant, and/or a curing agent.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 5, 2019
    Inventors: WEIMEI LUO, DAVID GLENN BLACK, MARK THOMAS BELLINO
  • Publication number: 20190271924
    Abstract: An organic photoconductor drum includes a support element, a charge generation layer over the support element, a charge transport layer over the charge generation layer, and an overcoat layer. The overcoat layer includes a curable composition having both a non-radical polymerizable additive and a charge transport molecule containing four radical polymerizable functional groups exemplified as: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are hydrogen atoms, and R5 and R6 contain a spacer group and a radical polymerizable functional group wherein the spacer group of R1, R2, R5, and R6, is an ethyl group and the radical polymerizable functional group of R1, R2, R5 and R6 is an acrylate group. The non-radical polymerizable additive may be a surfactant. The curable composition may also include a curing agent.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 5, 2019
    Inventors: WEIMEI LUO, DAVID GLENN BLACK, MARK THOMAS BELLINO
  • Publication number: 20190271925
    Abstract: A charge transport molecule contains four radical polymerizable functional groups of the general structure exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are hydrogen atoms, and R5 and R6 contain a spacer group and a radical polymerizable functional group wherein the spacer group of R1, R2, R5 and R6 is an ethyl group and the radical polymerizable functional group of R1, R2, R5 and R6 is an acrylate group.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 5, 2019
    Inventors: WEIMEI LUO, DAVID GLENN BLACK, MARK THOMAS BELLINO
  • Patent number: 10331051
    Abstract: A charge transport molecule containing four radical polymerizable functional groups used in an overcoat for an organic photoconductor drum of an electrophotographic image forming device is provided. The charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable functional group.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: June 25, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Weimei Luo, David Glenn Black, Mark Thomas Bellino
  • Publication number: 20180364599
    Abstract: A method to make an improved organic photoconductor drum of an electrophotographic image forming device is provided. The improved organic photoconductor drum is prepared using a curable composition including a charge transport molecule containing four radical polymerizable functional groups containing an oxygen atom of the general structure shown below: wherein R1 and R2 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom, R3 and R4 are a non-radical polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom. The curable composition may also contain at least one optional curing agent.
    Type: Application
    Filed: July 31, 2018
    Publication date: December 20, 2018
    Inventors: DAVID GLENN BLACK, MARK THOMAS BELLINO, WEIMEI LUO
  • Publication number: 20180341189
    Abstract: An improved overcoat layer for an organic photoconductor drum used in an electrophotographic image forming device is provided. The overcoat layer is prepared from a curable composition including a charge transport molecule containing four radical polymerizable hydrophilic functional groups containing an oxygen atom of the general structure shown below: wherein R1 and R2 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom, R3 and R4 are a non-radical polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom. The curable composition may also contain at least one optional curing agent. This overcoat layer improves wear resistance of the organic photoconductor drum without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its service life.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 29, 2018
    Inventors: DAVID GLENN BLACK, MARK THOMAS BELLINO, WEIMEI LUO
  • Publication number: 20180335709
    Abstract: An improved organic photoconductor drum used in an electrophotographic image forming device and method to make the same is provided. The organic photoconductor drum contains a protective overcoat. The protective overcoat is prepared from a curable composition including a charge transport molecule containing four radical polymerizable hydrophilic functional groups containing an oxygen atom of the general structure shown below: where R1 and R2 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom, R3 and R4 are a non-radical polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable hydrophilic functional group containing an oxygen atom. The curable composition may also contain at least one curing agent. This organic photoconductor drum has excellent wear resistance without negatively altering the electrophotographic properties, thus protecting the organic photoconductor drum from damage and extending its service life.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 22, 2018
    Inventors: DAVID GLENN BLACK, MARK THOMAS BELLINO, WEIMEI LUO
  • Publication number: 20180173122
    Abstract: A method to make an improved organic photoconductor drum of an electrophotographic image forming device is provided. The improved organic photoconductor drum is prepared using a curable composition including a charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable functional group.
    Type: Application
    Filed: February 19, 2018
    Publication date: June 21, 2018
    Inventors: WEIMEI LUO, DAVID GLENN BLACK, MARK THOMAS BELLINO
  • Patent number: 9927727
    Abstract: A method to make an improved organic photoconductor drum of an electrophotographic image forming device is provided. The improved organic photoconductor drum is prepared using a curable composition including a charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable functional group.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: March 27, 2018
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Weimei Luo, David Glenn Black, Mark Thomas Bellino
  • Publication number: 20180009733
    Abstract: The present invention provides a simple, cost effective and time saving two step method for synthesizing triarylamines comprising two alkyl alcohols in a single vessel. The resulting triarylamines are synthesized without the need for the usual protection and the deprotection steps. The reaction proceeds in two steps in a single reaction vessel whereby a primary arylamine is reacted with two equivalents of a halogenated aryl alkyl alcohol in the presence of a catalytic amount of palladium precursor, ligand, solvent and base.
    Type: Application
    Filed: July 6, 2016
    Publication date: January 11, 2018
    Inventor: DAVID GLENN BLACK
  • Publication number: 20170192368
    Abstract: A method to make an improved organic photoconductor drum of an electrophotographic image forming device is provided. The improved organic photoconductor drum is prepared using a curable composition including a charge transport molecule containing four radical polymerizable functional groups of the general structure exemplified below: where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and R5 and R6 contain a spacer group and a radical polymerizable functional group.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 6, 2017
    Inventor: DAVID GLENN BLACK
  • Publication number: 20170184985
    Abstract: An improved organic photoconductor drum having a protective overcoat layer and method to make the same is provided. The protective overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate having at least 6 functional groups.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Inventors: DAVID GLENN BLACK, MARK THOMAS BELLINO, WEIMEI LUO
  • Publication number: 20170184987
    Abstract: An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device and method to make the same is provided. The overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate having at least 6 functional groups. This overcoat layer improves wear resistance of the photoconductor drum without negatively altering the electrophotographic properties.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Inventors: David Glenn Black, Mark Thomas Bellino, James Alan Hartman, Weimei Luo
  • Publication number: 20170184986
    Abstract: An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device and method to make the same is provided. The overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate having at least 6 functional groups. This overcoat layer improves wear resistance of the photoconductor drum without negatively altering the electrophotographic properties.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Inventors: DAVID GLENN BLACK, MARK THOMAS BELLINO, JAMES ALAN HARTMAN, WEIMEI LUO
  • Publication number: 20170184984
    Abstract: An improved organic photoconductor drum having a protective overcoat layer and method to make the same is provided. The protective overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate having at least 6 functional groups.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 29, 2017
    Inventors: DAVID GLENN BLACK, MARK THOMAS BELLINO, WEIMEI LUO