Xerox Corporation

Mary Ryan-Hotchkiss

Donald R Titterington

Jeffery H Banning

Bo Wu

Wolfgang G Wedler

Gerard H Rousseau

Jeffrey Russell Kohne

Steven V Korol

Augustus J Rogers, Iv

Rolf K Mueller

Disclosed is a phase change ink composition comprising (a) a colorant and (b) the reaction product of (i) an isocyanate and (ii) an antioxidant or UV stabilizer molecule having thereon (A) at least one isocyanate-reactive hydroxyl group and/or (B) at least one isocyanate-reactive primary or secondary amino group.

Phase change inks with isocyanate-derived antioxidants and UV stabilizers

Disclosed is a phase change ink composition comprising (1) an ink carrier comprising (A) a first component which comprises an ester-amide material, and (B) a second component which comprises either (i) a material selected from the group consisting of urethane compounds, urea compounds, urethane-urea compounds, and mixtures thereof, (ii) a polyalkylene wax, or (iii) a mixture thereof; and (2) a colorant.

Phase change ink printing process

A method of improving automatic document feed of media printed with phase change inks coats the surface of the phase change inks on the media with fine particles. The particles may include PMMA, glass bead, silica particles, crushed glass particles, kaolin clay, micronized PE and PTFE, calcium carbonate powder, hard inks or toner powder. The particles may be applied to the surface of a transfix drum by oil transfer or electrostatically prior to jetting the phase change ink, or in the case of hard inks may be jetted onto the surface of the transfix drum (offset) with the phase change ink or onto the print media (direct) after application of the phase change ink in an overprint printing process. Also the particles may be applied by a pair of finishing rollers after the media has been printed with the phase change inks, either in a direct or offset print process, the finishing roller on the print side being coated with the fine particles.

Automatic document feed of phase change inks

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Portland, OR, United States of America

Mary Ryan-Hotchkiss