Invention Grant
- Patent Title: Polymerized charge enhanced spacer particle
- Patent Title (中): 聚合电荷增强间隔物颗粒
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Application No.: US13667448Application Date: 2012-11-02
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Publication No.: US09023567B2Publication Date: 2015-05-05
- Inventor: Robert D. Bayley , Maura A. Sweeney , Grazyna E. Kmiecik-Lawrynowicz
- Applicant: Xerox Corporation
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Pillsbury Winthrop Shaw Pittman LLP
- Main IPC: G03G9/093
- IPC: G03G9/093 ; G03G9/097 ; G03G9/08

Abstract:
A toner particle has a core and a shell surrounding the core, wherein the shell contains a polymerized charge enhanced spacer particle, which is a copolymer of a charge control agent and a monomer. A method of making toner particles includes forming a slurry by mixing together a first emulsion containing a resin, optionally a wax, optionally a colorant, optionally a surfactant, optionally a coagulant, and one or more additional optional additive, heating the slurry to form aggregated particles in the slurry, forming a second emulsion containing a monomer and a charge control agent, polymerizing the second emulsion to form a copolymer of the monomer and the charge control agent, and incorporating the copolymer into the toner particles, wherein the aggregated particles form a core of the toner particles.
Public/Granted literature
- US20140127620A1 POLYMERIZED CHARGE ENHANCED SPACER PARTICLE Public/Granted day:2014-05-08
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