Carrier compositions
AssigneeXerox Corporation
InventorsDeepak R. Maniar, Thomas C. Dombroski, Victor Berko-Boateng, Christopher M. Pattison, Angela Schnuerch
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Abstract
Coated carrier particles are provided for use in developer compositions for electrophotographic imaging. The coated carrier particles include a carrier core and a resin coating that includes first and second polymer components. The coated carrier particles exhibit stable triboelectric charging during aging, decreased coating hardness, higher coating coverage, and an improved resilience to toner impaction.
Claims6
Coated carrier particles comprising a solid core and a polymeric coating over the core, the polymeric coating comprising at least a first polymer component and a second polymer component,
- wherein the first polymer component is selected from the group consisting of acrylate polymers, methacrylate polymers, acrylate copolymers and methacrylate copolymers, and the second polymer component is selected from the group consisting of styrene-butadiene-styrene copolymers, styrene-isoprene-styrene copolymers, styrene-ethylene-butylene-styrene copolymers, styrene-ethylene-propylene copolymers, styrene-ethylene-butylene copolymers, hydrogenated and non-hydrogenated polyisoprene copolymers, hydrogenated and non-hydrogenated polyisoprene/butadiene copolymers, hydrogenated and non-hydrogenated polybutadiene copolymers and hydrogenated styrenic block copolymers, and
- wherein the polymeric coating comprises about 90 to about 95 percent by weight of the first polymer component, and from about 5 to about 10 percent by weight of the second polymer component, based on the total weight of the polymeric coating.
A developer composition comprising toner and coated carrier particles that comprise a solid core and a polymeric coating over the core;
- the polymeric coating comprising at least a first polymer component and a second polymer component;
- wherein the first polymer component is selected from the group consisting of acrylate polymers, methacrylate polymers, acrylate copolymers and methacrylate copolymers, and the second polymer component is selected from the group consisting of styrene-butadiene-styrene copolymers, styrene-isoprene-styrene copolymers, styrene-ethylene-butylene-styrene copolymers, styrene-ethylene-propylene copolymers, styrene-ethylene-butylene copolymers, hydrogenated and non-hydrogenated polyisoprene copolymers, hydrogenated and non-hydrogenated polyisoprene/butadiene copolymers, hydrogenated and non-hydrogenated polybutadiene copolymers and hydrogenated styrenic block copolymers, and
- wherein the polymeric coating comprises about 90 to about 95 percent by weight of the first polymer component, and from about 5 to about 10 percent by weight of the second polymer component, based on the total weight of the polymeric coating.
Dependencies are inferred from the claim text.