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William M Schwarz: Ink compositions. Xerox Corporation, Eugene O Palazzo, Judith L Byorick, June 20, 1989: US04840674 (100 worldwide citation)

An improved ink composition comprised of a major amount of water; an organic solvent selected from the group consisting of tetramethylene sulfone; 1,1,3,3-tetramethyl urea; 3-methyl sulfolane; and 1,3-dimethyl-2-imidazolidone; which solvent has permanently dissolved therein spirit soluble dyes such ...


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Jeffery H Banning, C Wayne Jaeger: Colorant compounds. Xerox Corporation, Judith L Byorick, October 25, 2005: US06958406 (99 worldwide citation)

Disclosed are compounds of the formula wherein Y is a hydrogen atom or a bromine atom, n is an integer of 0, 1, 2, 3, or 4, R1 is an alkylene group or an arylalkylene group, and X is (a) a hydrogen atom, (b) a group of the formula wherein R2 is an alkyl group, an aryl group, an arylalkyl group, or a ...


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Bo Wu, Rina Carlini, James M Duff, Jeffrey H Banning, James D Mayo: Phase change inks containing dimeric azo pyridone colorants. Xerox Corporation, Judith L Byorick, January 6, 2004: US06673139 (99 worldwide citation)

Disclosed is a phase change ink composition comprising a phase change ink carrier and a colorant compound of the formula


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Jeffrey H Banning, Bo Wu, James D Mayo, James M Duff, Rina Carlini, Jule W Thomas Jr, Paul F Smith: Phase change inks containing azo pyridone colorants. Xerox Corporation, Judith L Byorick, June 29, 2004: US06755902 (97 worldwide citation)

Disclosed is a phase change ink composition comprising a phase change ink carrier and a colorant compound of the formula


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