Invention Grant
- Patent Title: Electrostatic latent image developing core-shell type toner, method for manufacturing same, and image forming method using same
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Application No.: US15270664Application Date: 2016-09-20
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Publication No.: US09964886B2Publication Date: 2018-05-08
- Inventor: Kaori Matsushima , Tomomi Oshiba
- Applicant: Konica Minolta, Inc.
- Applicant Address: JP Tokyo
- Assignee: KONICA MINOLTA, INC.
- Current Assignee: KONICA MINOLTA, INC.
- Current Assignee Address: JP Tokyo
- Agency: Lucas & Mercanti, LLP
- Priority: JP2016-053025 20160316
- Main IPC: G03G9/093
- IPC: G03G9/093

Abstract:
Provided is an electrostatic latent image developing toner that, while ensuring low temperature fixability, can ensure image quality stability even during high-speed continuous printing. The toner is an electrostatic latent image developing core-shell type toner containing at least a binder resin. The binder resin includes a crystalline polyester resin, an amorphous polyester resin, and a hybrid amorphous vinyl resin in which a vinyl polymerization segment is chemically bonded to a polymerization segment other than the vinyl polymerization segment, in which a core portion of the toner contains the crystalline polyester resin and the amorphous polyester resin, whereas a shell portion of the toner contains the hybrid amorphous vinyl resin, and the hybrid amorphous vinyl resin has a vinyl polymerization segment content of from 51 to 99% by mass.
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