Carrier compositions
AssigneeXerox Corporation
InventorsDeepak Maniar, Thomas Dombroski, Victor Berko-Boateng, Christopher 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.
Claims20
A coated carrier particles comprising a solid core and a polymeric coating over said core;
- said polymeric coating comprising at least a first polymer component and a second polymer component;
- wherein said first polymer component is chosen from the group consisting of polymers and copolymers of acrylates and methacrylates, and said second polymer component is chosen from the group consisting of thermoplastic resin polymers, copolymers and terpolymers containing styrene and/or styrene derivative monomer units and rubber monomer units.
A developer composition comprising toner and coated carrier particles that comprise a solid core and a polymeric coating over said core;
- said polymeric coating comprising at least a first polymer component and a second polymer component;
- wherein said first polymer component is chosen from the group consisting of polymers and copolymers of acrylates and methacrylates, and said second polymer component is chosen from the group consisting of thermoplastic resin polymers, copolymers and terpolymers containing styrene and/or styrene derivative monomer units and rubber monomer units.
A method of preparing coated carrier particles, comprising:
- mixing at least a first polymer component with at least a second polymer component to form a polymer mixture;
- mixing said polymer mixture with solid core particles;
- and
- coating said polymer mixture onto said solid core particles;
- wherein said first polymer component is chosen from the group consisting of polymers and copolymers of acrylates and methacrylates, and said second polymer component is chosen from the group consisting of thermoplastic resin polymers, copolymers and terpolymers containing styrene and/or styrene derivative monomer units and rubber monomer units.
Dependencies are inferred from the claim text.