Patents by Inventor Eniko Toma

Eniko Toma 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: 8142557
    Abstract: Radiation curable phase change ink comprising an ink vehicle that includes at least one curable carrier, at least one gellant, at least one curable wax and at least one photoinitiator. In a method of forming an image with the ink, the radiation curable phase change ink is melted, then jetted onto an image receiving substrate, wherein the radiation curable phase change ink forms a gel state, and exposed to ultraviolet light to cure the curable components of the radiation curable phase change ink. The wax cures into the structure of the ink, thereby generating a robust image of excellent gloss.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: March 27, 2012
    Assignee: Xerox Corporation
    Inventors: Jennifer L. Belelie, Peter G. Odell, Eniko Toma, Christopher A. Wagner, C. Geoffrey Allen, Stephan V. Drappel
  • Patent number: 7838570
    Abstract: An ink used preferably in jet ink devices includes an ink vehicle, the ink vehicle being made up either (a) a first component curable by a first polymerization route and an associated photointiator, and a second component curable by a second polymerization route and as associated photoinitiator, wherein the second polymerization route is different from the first polymerization route, or (b) a component curable by a single polymerization route with a first and a second photoinitiator system in which the first system responds to longer wavelengths. An image may be formed by such inks by jetting onto a transfer member surface, curing the first component or partially curing the single component while upon the transfer member surface, transferring the ink to an image receiving surface, and completing curing. The first component is preferably curable via cationic polymerization and the second component is preferably curable via free radical polymerization.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: November 23, 2010
    Assignee: Xerox Corporation
    Inventors: Peter G. Odell, Eniko Toma
  • Patent number: 7820731
    Abstract: A radiation curable ink includes a curable monomer or oligomer, a curable wax, a colorant, and at least one initiator.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: October 26, 2010
    Assignee: Xerox Corporation
    Inventors: Peter G. Odell, Eniko Toma, Jennifer L. Belelie, Christopher A. Wagner
  • Patent number: 7714040
    Abstract: Disclosed is a phase change ink comprising a colorant, an initiator, and a phase change ink carrier, said carrier comprising at least one radically curable monomer compound and a compound of the formula wherein R1 and R1? each, independently of the other, is an alkyl group having at least one ethylenic unsaturation, an arylalkyl group having at least one ethylenic unsaturation, or an alkylaryl group having at least one ethylenic unsaturation, R2, R2?, and R3 each, independently of the others, are alkylene groups, arylene groups, arylalkylene groups, or alkylarylene groups, and n is an integer representing the number of repeat amide units and is at least 1. Also disclosed herein is a method of printing with the phase change ink.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: May 11, 2010
    Assignee: Xerox Corporation
    Inventors: Eniko Toma, Jennifer L. Belelie, Peter G. Odell
  • Patent number: 7691920
    Abstract: An ink jet ink includes an ink vehicle, wherein the ink vehicle includes at least one wax monomer functionalized to include in the chain at least one reactive group curable upon exposure to radiation. The reactive group is preferably curable via cationic or free radical polymerization. In a preferred embodiment, the ink vehicle includes a wax monomer having a structure: wherein C represents a cationically curable group and R represents a radically curable group. The inks may be used to form an image by jetting the ink onto a transfuse member surface, increasing the viscosity of the ink upon the transfuse member surface, subsequently transferring the ink from the transfuse member surface to an image receiving substrate, and exposing the ink to radiation following the transfer to the image receiving substrate to effect reaction of the at least one reactive group.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: April 6, 2010
    Assignee: Xerox Corporation
    Inventors: Jennifer L. Belelie, Peter G. Odell, Eniko Toma, Paul F. Smith, Rina Carlini
  • Patent number: 7632546
    Abstract: A radiation curable phase change ink preferably used in piezoelectric ink jet devices includes an ink vehicle that includes at least one gellant comprised of a curable polyamide-epoxy acrylate component and a polyamide component, and at least one colorant. The use of the gellant enables the ink to form a gel state having a viscosity of at least 103 mPa·s at very low temperatures of about 25° C. to about 100° C. The ink may thus be jetted at very low jetting temperatures of, for example, about 40° C. to about 110° C. The ink may be used to form an image by heating the ink to a first temperature at which the ink may be jetted, jetting onto a member or substrate maintained at a second temperature at which the ink forms a gel state, and exposing the ink to radiation energy to polymerize curable components of the ink.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: December 15, 2009
    Assignee: Xerox Corporation
    Inventors: Peter G Odell, C Geoffrey Allen, Christopher A Wagner, Stephan V Drappel, Rina Carlini, Eniko Toma
  • Patent number: 7625956
    Abstract: Disclosed is a phase change ink comprising a colorant, an initiator, and an ink vehicle, said ink vehicle comprising (a) at least one radically curable monomer compound, and (b) a compound of the formula wherein R1 is an alkylene, arylalkylene, or alkylarylene group, R2 and R2? each, independently of the other, are alkylene, arylene, arylalkylene, or alkylarylene groups, R3 and R3? each, independently of the other, are either (a) photoinitiating groups, or (b) groups which are alkyl, aryl, arylalkyl, or alkylaryl groups, provided that at least one of R3 and R3? is a photoinitiating group, and X and X? each, independently of the other, is an oxygen atom or a group of the formula —NR4—, wherein R4 is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: December 1, 2009
    Assignee: Xerox Corporation
    Inventors: Peter G. Odell, Eniko Toma, Jennifer L. Belelie
  • Patent number: 7576235
    Abstract: Processes for preparing bis(urea-urethane) compounds wherein R1 is alkyl, aryl, arylalkyl, or alkylaryl, R2 is alkylene, arylene, arylalkylene, or alkylarylene, R3 is alkylene, arylene, arylalkylene, or alkylarylene, and R4 is hydrogen or alkyl, comprising: (1) first bring to a reaction temperature of about 20-125° C. a reaction mixture comprising monoalcohol reactant R1—OH and diisocyanate reactant OCN—R2—NCO, the monoalcohol being present in an amount of about 0.8-1.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: August 18, 2009
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, Adela Goredema, Eniko Toma, Christine E. Bedford
  • Patent number: 7563489
    Abstract: A radiation curable phase change ink preferably used in piezoelectric ink jet devices includes an ink vehicle that includes at least one curable epoxy-polyamide gellant, and at least one colorant. The use of the gellant enables the ink to form a gel state having a viscosity of at least 103 mPa·s at very low temperatures of about 25° C. to about 100° C. The ink may thus be jetted, for example onto an intermediate transfer member surface or directly to an image receiving substrate, at very low jetting temperatures of, for example, about 40° C. to about 110° C.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: July 21, 2009
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, Eniko Toma, Peter G Odell, Vaisnavi Siritharan
  • Patent number: 7560587
    Abstract: Disclosed is a bis(urea-urethane) compound of the formula wherein R1 and R1? each, independently of the other, is an alkyl group, wherein at least one of R1 and R1? has at least about 6 carbon atoms, R2 and R2? each, independently of the other, is an alkylene group, wherein at least one of R2 and R2? has at least about 3 carbon atoms, R3 is an alkylene group having at least about 2 carbon atoms, and R4 and R5 each, independently of the other, is a hydrogen atom or an alkyl group, and wherein R1 and R1? each contain no more than 2 fully fluorinated carbon atoms.
    Type: Grant
    Filed: December 4, 2004
    Date of Patent: July 14, 2009
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Rina Carlini, Christine E. Bedford, Marcel P. Breton, Eniko Toma
  • Patent number: 7556844
    Abstract: An ink that may be used in ink jet devices is a photochromic ink comprising an ink vehicle that includes at least one radiation curable component, at least one photochromic material and at least one photoinitiator. The ink is cured via exposure to radiation that cures the at least one radiation curable component of the ink. A radiation curable ink capable of exhibiting photochromatic color changes, which may be used to indicate a document's authenticity, is thus achieved.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: July 7, 2009
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Christopher A Wagner, Eniko Toma, Jennifer L Belelie, Peter G Odell
  • Patent number: 7531582
    Abstract: Ink vehicles having improved gellant solubility and ink compositions including such ink vehicles are provided. Exemplary ink vehicles include first and second co-monomers, and a gellant that includes that includes a curable epoxy-polyamide composite gellant; in which the first and second co-monomers are radiation curable are different from each other. Additional exemplary ink vehicles include at least two chemically distinct gellants. The chemically distinct gellant materials include a first gellant that includes a curable epoxy-polyamide composite gellant, and a second gellant that includes an amide gellant. Methods for making and using these ink vehicles and ink compositions are also provided.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: May 12, 2009
    Assignee: Xerox Corporation
    Inventors: Eniko Toma, Peter G. Odell, C. Geoffrey Allen, Jennifer Lynne Belelie
  • Patent number: 7501015
    Abstract: The phase change ink a viscosity of from about 4 mPa-s to about 50 mPa-s at a first temperature and has a viscosity of from 104 mPa-s to about 109 mPa-s at a second lower temperature. The second temperature may be below the first temperature by at least 10° C. but by no more than 50° C. The first temperature may be from about 60° C. to about 110° C. and the second temperature may be from about 20° C. to about 70° C. A curve of log10 viscosity of the phase change ink plotted against temperature in degrees Celsius may have a slope having an absolute value less than 0.02 at the first temperature and have a slope having an absolute value greater than 0.08 for at least a region second temperatures.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: March 10, 2009
    Assignee: Xerox Corporation
    Inventors: Peter Gordon Odell, Paul F. Smith, Jennifer Lynne Belelie, Eniko Toma, Stephan Drappel, C. Geoffrey Allen, Rina Carlini, Christopher A. Wagner
  • Patent number: 7449515
    Abstract: Disclosed is a phase change ink comprising a colorant, an initiator, and a phase change ink carrier, said carrier comprising (A) a first isocyanate-derived compound which is the reaction product of a mixture comprising (1) an isocyanate; and (2) a component comprising (a) an alcohol having at least one ethylenic unsaturation; (b) an amine having at least one ethylenic unsaturation; (c) an acid having at least one ethylenic unsaturation; or (d) mixtures thereof, (B) a second isocyanate-derived compound which is the reaction product of (1) a diisocyanate; (2) a monoalcohol having exactly one hydroxyl group and having at least one ethylenic unsaturation; and (3) a polyol having two or more hydroxyl groups, (C) an optional phase change inducing component, said phase change inducing component containing at least one hydroxyl group, said phase change inducing component having a melting point of about 40° C.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: November 11, 2008
    Assignee: Xerox Corporation
    Inventors: Jennifer L. Belelie, Rina Carlini, Eniko Toma
  • Publication number: 20080122914
    Abstract: Ink vehicles having improved gellant solubility and ink compositions including such ink vehicles are provided. Exemplary ink vehicles include first and second co-monomers, and a gellant that includes that includes a curable epoxy-polyamide composite gellant; in which the first and second co-monomers are radiation curable are different from each other. Additional exemplary ink vehicles include at least two chemically distinct gellants. The chemically distinct gellant materials include a first gellant that includes a curable epoxy-polyamide composite gellant, and a second gellant that includes an amide gellant. Methods for making and using these ink vehicles and ink compositions are also provided.
    Type: Application
    Filed: August 23, 2006
    Publication date: May 29, 2008
    Applicant: XEROX CORPORATION
    Inventors: Eniko TOMA, Peter G. ODELL, C. Geoffrey ALLEN, Jennifer Lynne BELELIE
  • Publication number: 20080098927
    Abstract: A pigmented phase change ink composition comprising an ink carrier, a dispersing agent, and pigment particles. The ink can be resistant to substantial aggregation and settling of the pigment particles in the melt and even when exposed to freeze thaw cycles.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 1, 2008
    Applicant: XEROX CORPORATION
    Inventors: C. Geoffrey ALLEN, Adela GOREDEMA, Stephan V. DRAPPEL, Neha KHARBANDA, Caroline M. Turek, Eniko TOMA, Christopher A. WAGNER
  • Patent number: 7317122
    Abstract: Curable trans-1,2-cyclohexane bis(urea-urethane) compounds of the formulae wherein R1 and R?1 each, independently of the other, are alkylene, arylene, arylalkylene, or alkylarylene groups, R2 and R?2 each, independently of the other, are alkyl, aryl, arylalkyl, or alkylaryl groups, R3 and R?3 each, independently of the other, are hydrogen atoms or alkyl groups, R4 and R?4 each, independently of the other, are hydrogen atoms, fluorine atoms, alkyl groups, or phenyl groups, n is an integer of 0, 1, 2, 3, or 4, and R5 is an alkyl, aryl, arylalkyl, or alkylaryl group, or a substituent other than an alkyl, aryl, arylalkyl, or alkylaryl group, provided that at least one of R1, R?1, R2, R?2, R3, R?3, R4, R?4, or one or more of R5 is an alkyl, alkylene, arylalkyl, arylalkylene, alkylaryl, or alkylarylene group containing an ethylenic unsaturation rendering the compound curable upon exposure to heat and/or actinic radiation.
    Type: Grant
    Filed: December 4, 2004
    Date of Patent: January 8, 2008
    Assignee: Xerox Corporation
    Inventors: Rina Carlini, Eniko Toma, Peter G. Odell, Jeffrey H. Banning
  • Publication number: 20080000384
    Abstract: Radiation curable phase change ink comprising an ink vehicle that includes at least one curable carrier, at least one gellant, at least one curable wax and at least one photoinitiator. In a method of forming an image with the ink, the radiation curable phase change ink is melted, then jetted onto an image receiving substrate, wherein the radiation curable phase change ink forms a gel state, and exposed to ultraviolet light to cure the curable components of the radiation curable phase change ink. The wax cures into the structure of the ink, thereby generating a robust image of excellent gloss.
    Type: Application
    Filed: June 28, 2006
    Publication date: January 3, 2008
    Applicant: XEROX CORPORATION
    Inventors: Jennifer L. BELELIE, Peter G. ODELL, Eniko TOMA, Christopher A. WAGNER, C. Geoffrey ALLEN, Stephan V. DRAPPEL
  • Patent number: 7314949
    Abstract: Disclosed are trans-1,2-cyclohexane bis(urea-urethane) compounds of the formulae wherein R1 and R?1 each, independently of the other, is an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, R2 and R?2 each, independently of the other, is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, R3 and R?3 each, independently of the other, is a hydrogen atom or an alkyl group, R4 and R?4 each, independently of the other, is a hydrogen atom, a fluorine atom, an alkyl group, or a phenyl group, n is an integer of 0, 1, 2, 3, or 4, and R5 is an alkyl group, an aryl group, an arylalkyl group, an alkylaryl group, or a substituent other than an alkyl, aryl, arylalkyl, or alkylaryl group.
    Type: Grant
    Filed: December 4, 2004
    Date of Patent: January 1, 2008
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Rina Carlini, Marcel P. Breton, Jeffrey H. Banning, Eniko Toma
  • Patent number: 7279587
    Abstract: Disclosed is a compound of the formula wherein R1 is an alkylene, arylene, arylalkylene, or alkylarylene group, R2 and R2? each independently of the other, are alkylene, arylene, arylalkylene, or alklarylene groups, R3 and R3? each, independently of the other, are either (a) photoinitiating groups, or (b) groups which are alkyl, aryl, arylalkyl, or alkylaryl groups, provide that at least one of R3 and R3? is a photoinitiating group, and X and X? each, independently of the other, is an oxygen atom or a group of the formula —NR4—, wherein R4 is a hydrogen atom, an alkyl group, an aryl group, or an alkylaryl group.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: October 9, 2007
    Assignee: Xerox Corporation
    Inventors: Peter G. Odell, Eniko Toma, Jennifer L. Belelie