Patents by Inventor Guerino Sacripante

Guerino Sacripante 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: 20060216626
    Abstract: A toner having an amorphous resin, a crystalline resin, and a colorant, wherein the crystalline resin has a melting temperature of at least 70° C. and a recrystallization point of at least 47° C. exhibits improved document offset properties and improved heat cohesion. Annealing the toner further improves the heat cohesion and morphology of the toner.
    Type: Application
    Filed: March 25, 2005
    Publication date: September 28, 2006
    Applicant: Xerox Corporation
    Inventors: Guerino Sacripante, Ke Zhou, Michael Hawkins, Kimberly Nosella, Edward Zwartz, Nicoleta Mihai, Valerie Farrugia, Stephan Drappel, Paul Gerroir
  • Publication number: 20060166121
    Abstract: A toner process that includes a first heating of a colorant dispersion, a first polyester resin free latex emulsion, a second polyester latex emulsion, and a wax dispersion in the presence of a coagulant containing a metal ion; adding a third polyester free latex; adding an organic sequestering compound or a silicate salt sequestering compound, followed by a second heating.
    Type: Application
    Filed: January 27, 2005
    Publication date: July 27, 2006
    Inventors: Raj Patel, Guerino Sacripante, Edward Zwartz, Enno Agur, Allan Chen, T. Ng, Kimberly Nosella, Cuong Vong, Karen Moffat
  • Publication number: 20060160010
    Abstract: A toner is disclosed that includes a toner binder of crystalline sulfonated polyester, wherein the crystalline sulfonated polyester is 90% by weight or more of the toner binder, and a colorant. In other embodiments, the toner includes a crystalline sulfonated polyester and a linear amorphous sulfonated polyester, and a colorant. In these embodiments, the crystalline sulfonated polyester is from about 20% to about 60% by weight of the toner binder and the linear amorphous sulfonated polyester is from about 40% to about 80% by weight of the toner binder. The toners possess excellent miniumum fixing temperatures in the range of from about 80° C. to about 130° C. Processes for preparing the toners are also described.
    Type: Application
    Filed: January 19, 2005
    Publication date: July 20, 2006
    Applicant: XEROX CORPORATION
    Inventors: Raj Patel, Edward Zwartz, Guerino Sacripante, Allan Chen
  • Publication number: 20060128830
    Abstract: An ink composition includes a colorant, a reactive polymer latex such as an epoxy copolymer latex, an optional dissipatable polymer, a dispersant such as a sulfonated polyester, and a liquid vehicle such as water. The ink composition is a stable liquid at ambient temperature, but becomes a gel upon heating or removal of part of the liquid vehicle.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 15, 2006
    Applicant: XEROX CORPORATION
    Inventors: Marcel Breton, Guerino Sacripante, Christy Bedford
  • Publication number: 20060128829
    Abstract: An ink composition includes a colorant, a polymer latex such as a terpolymer latex, an optional dissipatable polymer, a dispersant such as a sulfonated polyester, and a liquid vehicle such as water. The ink composition is a stable liquid at ambient temperature, but becomes a gel upon heating or removal of part of the liquid vehicle.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 15, 2006
    Applicant: XEROX CORPORATION
    Inventors: Marcel Breton, Christy Bedford, Guerino Sacripante
  • Publication number: 20060100300
    Abstract: A composition including an initiator and an unsaturated sulfopolyester amine resin, and processes for preparing and using thereof.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 11, 2006
    Inventors: Guerino Sacripante, Ke Zhou
  • Publication number: 20060088779
    Abstract: A toner composition is provider including a branched amorphous polyester resin and a crystalline polyester resin, wherein the toner possesses rheological properties yielding desired characteristics.
    Type: Application
    Filed: October 26, 2004
    Publication date: April 27, 2006
    Inventors: Guerino Sacripante, Fatima Mayer, Edward Zwartz, Nicoleta Mihai, Valerie Farrugia
  • Publication number: 20060063086
    Abstract: A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the Tg of the emulsion resin to produce the resultant toner particles.
    Type: Application
    Filed: September 23, 2004
    Publication date: March 23, 2006
    Inventors: Guerino Sacripante, Fatima Mayer, Kimberly Nosella, Valerie Farrugia, Raj Patel, Milan Maric, Allan Chen, Edward Zwartz, T. Ng
  • Publication number: 20050186496
    Abstract: A toner containing a mixture of a sulfopolyester resin, a colorant and an alkyl amide.
    Type: Application
    Filed: February 12, 2004
    Publication date: August 25, 2005
    Inventors: Fatima Mayer, Guerino Sacripante, Edward Zwartz, Nicoleta Mihai, Enno Agur
  • Publication number: 20050181296
    Abstract: A toner process comprising the aggregation and coalescence of a sulfonated polyester and a colorant, and wherein said polyester possesses a degree of sulfonation or a sulfonation percentage of from about 0.5 to about 3 mol percent.
    Type: Application
    Filed: February 13, 2004
    Publication date: August 18, 2005
    Inventors: Sarah Robinson, Thomas Enright, Alan Toth, Milan Maric, Michael Hawkins, Marko Saban, Guerino Sacripante, George Liebermann
  • Publication number: 20050165133
    Abstract: A process for forming curable powder comprises providing an aqueous dispersion of particles of curable resin and optionally particles comprising at least one curing agent; aggregating the particles optionally with the curing agent to form aggregated particles; coalescing the aggregated particles to form fused particles; and removing the fused particles from the aqueous dispersion. By the process, a curable powder is formed. The curable powder may be used in powder coating.
    Type: Application
    Filed: January 28, 2004
    Publication date: July 28, 2005
    Applicant: XEROX CORPORATION
    Inventors: Guerino Sacripante, Hadi Mahabadi, Patricia Burns, Dan Hays, Kip Jugle
  • Publication number: 20050163925
    Abstract: A process for forming curable powder comprises providing an aqueous dispersion of particles of curable resin and optionally particles comprising at least one curing agent; aggregating the particles optionally with the curing agent to form aggregated particles; coalescing the aggregated particles to form fused particles; and removing the fused particles from the aqueous dispersion. By this process, a curable powder is formed. The curable powder may be used in powder coating.
    Type: Application
    Filed: January 28, 2004
    Publication date: July 28, 2005
    Applicant: XEROX CORPORATION
    Inventors: Guerino Sacripante, Hadi Mahabadi, Patricia Burns, Dan Hays, Kip Jugle
  • Patent number: 5548059
    Abstract: Unsaturated linear polymers have repeating units of a reaction product of a first monomer, a second monomer, a third monomer and optionally a fourth monomer. The linear polymers have a glass transition temperature ranging from about 52.degree. C. to about 61.degree. C. The first monomer should have a weight average molecular weight less than 200. The second monomer may be a dicarboxylic acid or diester which is different than the third monomer. A concentration of second residues of the polymer, derived from the second monomer, ranges from about 3 wt. % to about 15 wt. %, based on the total weight of the polymer. The third monomer is an aromatic dicarboxylic acid or an ester thereof. In the polymer, a concentration of third residues, derived from the third monomer, ranges from about 40 wt. % to about 55 wt. %, based on the total weight of the polymer. The fourth monomer is a diol having a higher molecular weight than the first monomer.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: August 20, 1996
    Assignee: Xerox Corporation
    Inventors: Robert D. Bayley, Carol A. Fox, Thomas R. Hoffend, Hadi K. Mahabadi, Enno E. Agur, Guerino Sacripante, Michael S. Hawkins
  • Patent number: 5407772
    Abstract: Unsaturated linear polymers have repeating units of a reaction product of a first monomer, a second monomer, a third monomer and optionally a fourth monomer. The linear polymers have a glass transition temperature ranging from about 52.degree. C. to about 61.degree. C. The first monomer should have a weight average molecular weight less than 200. The second monomer may be a dicarboxylic acid or diester which is different than the third monomer. A concentration of second residues of the polymer, derived from the second monomer, ranges from about 3 wt. % to about 15 wt. %, based on the total weight of the polymer. The third monomer is an aromatic dicarboxylic acid or an ester thereof. In the polymer, a concentration of third residues, derived from the third monomer, ranges from about 40 wt. % to about 55 wt. %, based on the total weight of the polymer. The fourth monomer is a diol having a higher molecular weight than the first monomer.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: April 18, 1995
    Assignee: Xerox Corporation
    Inventors: Robert D. Bayley, Carol A. Fox, Thomas R. Hoffend, Hadi K. Mahabadi, Enno E. Agur, Guerino Sacripante, Michael S. Hawkins
  • Patent number: 5213934
    Abstract: Microcapsule toners comprise a polymeric shell and a core containing colorants and a polymer binder. Part of the polymer binder is chemically grafted to the shell polymer. A process of preparing the microcapsule toners involves a shell forming interfacial polycondensation and a core binder forming free radical polymerization. The grafting of core binder to the shell is accomplished via the involvement of a polyfunctional reagent capable of reacting with both the shell and core monomers, or involvement of a shell monomer bearing a core monomer functionality.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: May 25, 1993
    Assignee: Xerox Corporation
    Inventors: Guerino Sacripante, Beng S. Ong, Bing R. Hsieh, Robert McNamara
  • Patent number: 5194356
    Abstract: A colored magnetic toner composition comprised of a polymer resin or resins, an optional waxy, lubricating or low surface energy substance, a colorless or light colored magnetic material, a color pigment, dye or mixture thereof, excluding black, and a whitening agent; and wherein the surface of the toner contains a conductive metal oxide.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: March 16, 1993
    Assignee: Xerox Corporation
    Inventors: Guerino Sacripante, Beng S. Ong, Michael J. Levy, Richard B. Lewis
  • Patent number: 5135832
    Abstract: A colored magnetic encapsulated toner composition comprised of a core comprised of a polymer binder, a colorless or light colored magnetic material, a color pigment, dye or mixture thereof excluding black, and a whitening agent; and which core is encapsulated in a polymeric shell containing a metal oxide.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: August 4, 1992
    Assignee: Xerox Corporation
    Inventors: Guerino Sacripante, Beng S. Ong, Michael J. Levy, Richard B. Lewis
  • Patent number: 5114819
    Abstract: An encapsulated toner composition comprised of a core comprised of a polymer binder, a nonvolatile organic liquid, and magnetite; and wherein the core is encapsulated in a polyether-urea polymer shell.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: May 19, 1992
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Guerino Sacripante, Grazyna Kmiecik-Lawrynowicz, T. Brian McAneney
  • Patent number: 5082919
    Abstract: A toner composition comprised of a crosslinked thermotropic liquid crystalline polymer, a branched liquid crystalline polymer, or mixtures thereof.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: January 21, 1992
    Assignee: Xerox Corporation
    Inventors: Guerino Sacripante, T. Brian McAneney, Stephan Drappel, Sheau Van Kao, Lupu Alexandru
  • Patent number: 5045428
    Abstract: An encapsulated toner composition comprised of a core comprised of a resin binder formed by the hydrosilylation reaction of an olefin, pigment, dyes, or mixtures thereof; and a polymeric shell.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: September 3, 1991
    Assignee: Xerox Corporation
    Inventors: Guerino Sacripante, Barkev Keoshkerian, Beng S. Ong