Lexmark International, Inc.

Brian William Baird

George P Marshall

Bryan Patrick Livengood

Michael G Miller

Jerry J Abbott

James Craig Minor

William Harve Dickstein

Art Fred Diaz

Charles Mark Seymour

A toner composition comprising a primary resin and at least one additional polymeric component is improved by reactive compatibilization of the additional polymeric component and the resin. For example, effective amounts of a functional secondary resin and a functional silicone oil having functionality reactive therewith are included and mixed by extrusion so as to reduce or eliminate speckling in printing with the toner and the improve toner powder flow.

Reactive compatibilization of polymeric components such as siloxane polymers with toner resins

A toner composition comprising a primary resin and at least one additional polymeric component is improved by reactive compatibilization of the additional polymeric component and the resin. For example, effective amounts of a functional secondary resin and a functional silicone oil having functionality reactive therewith are included and mixed by extrusion so as to reduce or eliminate speckling in printing with the toner and to improve toner powder flow.

A toner particularly suited for flash fusing comprising a resin binder which is a bisphenol-A polyester containing an aliphatic diacid and sometimes also containing a hydroxyarenecarboxylic acid.

Flash fusible toner resins

A toner for a two component developer used in a high speed computer output printer has about 20 parts gelled styrene/acrylic resin, 40 parts acrylate resin, about 13 parts hydrogenated wood rosin ester with pentaerythritol, and about 18 parts rosin ester of pentaerythritol, as well as carbon black and a charge control agent. Exceptional improvement is noted in carrier deterioration, fuser roller life and photoconductor filming.

Dry toner with gelled resin for high speed printer

A dry toner having Zapon Yellow 141 as a charge control agent, dispersed moderately in the toner. Zapon Yellow 141 is about 95% by weight Solvent Yellow 81 and about 5% by weight Solvent Orange 56.

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Louisville, CO, United States of America

Brian William Baird