Invention Grant
- Patent Title: Electrostatic image developer
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Application No.: US16399408Application Date: 2019-04-30
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Publication No.: US10698329B2Publication Date: 2020-06-30
- Inventor: Futoshi Kadonome , Keiji Arai , Junichi Furukawa , Ikuko Sakurada
- 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
- Main IPC: G03G9/113
- IPC: G03G9/113 ; G03G9/097 ; G03G9/08 ; G03G9/087

Abstract:
Provided is an electrostatic charge image developer containing toner particles and carrier particles, wherein the toner particles contain at least silica particles or alumina particles as an external additive; the carrier particles contain core material particles and a coating resin layer covering a surface of the core particles; the coating resin layer contains metal oxide particles; an element measured by XPS (photoelectron spectroscopy) of the carrier particle is at least Si or Al; and a content of Si or Al in the carrier particle is in the range of 1 to 6 at % with respect to the total elements constituting the carrier particles.
Public/Granted literature
- US20190384201A1 ELECTROSTATIC IMAGE DEVELOPER Public/Granted day:2019-12-19
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