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Michael B Meinhardt: Chiral shaped ink sticks. Tektronix, Ralph D Alessandro, Francis I Gray, November 23, 1999: US05988805 (25 worldwide citation)

An ink stick shape for use in a printer ink stick feed chute is disclosed wherein the opposing sides of the ink stick are tapered or angled from the horizontal so that at least one area intermediate the top and the bottom of the ink stick is a greater distance from the horizontal than the junction o ...


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Michael B Meinhardt, Clifford R King: Hot melt phase change ink containing Diels-Alder polymerization precursor. Xerox Corporation, Ralph D Alessandro, March 28, 2000: US06042227 (24 worldwide citation)

A phase change ink carrier composition is disclosed which includes a Diels-Alder polymerization precursor wherein the composition forms a low viscosity liquid at temperatures in the range from about 90.degree. C. to at least about 160.degree. C., and forms a malleable material at temperatures from a ...


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Jeffrey H Banning, Donald R Titterington, Clifford R King, Michael B Meinhardt: Phase change ink formulation containing a combination of a urethane resin, a mixed urethane/urea resin, a mono-amide and a polyethylene wax. Tektronix, William A Simons, Ralph D Alessandro, Francis I Gray, November 30, 1999: US05994453 (19 worldwide citation)

Phase change carrier compositions made from the combination of at least one urethane resin; at least one urethane/urea resin; at least one mono-amide; and at least one polyethylene wax are disclosed. The order of addition of the reactants to form the reactant product urethane resin and urethane/urea ...


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Bo Wu, Michael B Meinhardt, Jeffery H Banning, Donald R Titterington: Process for preparing tetra-amide compounds. Xerox Corporation, September 20, 2005: US06946025 (11 worldwide citation)

Disclosed is a process for preparing a tetra-amide which comprises carrying out a condensation reaction between a diacid, a monoacid, and a diisocyanate, thereby forming a tetra-amide. Also disclosed is a process for preparing a phase change ink composition which comprises (a) carrying out a condens ...


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Donald R Titterington, Michael B Meinhardt, Jeffery H Banning, Clifford R King: Magenta phase change ink formulation containing organic sulfonic acid. Tektronix, Ralph D Alessandro, William A Simons, Charles F Moore, January 18, 2000: US06015847 (10 worldwide citation)

A phase change ink composition comprising a phase change carrier composition, at least one compatible phase change magenta colorant material, and at least one organic sulfonic acid compound is disclosed. The sulfonic acid stabilizes the magenta dye.


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Michael B Meinhardt, Randall R Bridgeman: System for printing and detecting a photochromic phase change ink composition. Xerox Corporation, Wells St John Roberts Gregory & Matkin, December 11, 2001: US06329453 (8 worldwide citation)

A photochromic phase change ink composition that contains (A) at least one selected polymeric and photochromic yellow phase change colorant and (B) a phase change ink carrier composition comprising (1) a resin selected from the group consisting of a urethane resin, a mixed urethane/urea resin and mi ...