Invention Grant
- Patent Title: Toner with an external additive of an organosilicon polymer particle having a hydroxyl group
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Application No.: US16728050Application Date: 2019-12-27
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Publication No.: US10942466B2Publication Date: 2021-03-09
- Inventor: Tsuneyoshi Tominaga , Masatake Tanaka , Taiji Katsura , Masamichi Sato , Shohei Kototani , Kentaro Yamawaki
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JPJP2018-246983 20181228
- Main IPC: G03G9/08
- IPC: G03G9/08 ; G03G9/097 ; G03G9/087

Abstract:
A toner including a toner particle containing a binder resin and an external additive, wherein the toner particle contains a polyvalent metal compound, the polyvalent metal compound is at least one selected from the group consisting of aluminum compounds, iron compounds and magnesium compounds, a content of a metal element derived from the polyvalent metal compound in the toner particle is from 0.080 to 20.000 μmol/g, the external additive contains an organosilicon polymer particle having a hydroxyl group, a ratio of a number-average particle diameter of the organosilicon polymer particle to a number-average particle diameter of the toner particle is from 0.0160 to 0.0650, and a content of the organosilicon polymer particle is at least 0.10 mass parts per 100.00 mass parts of the toner particle.
Public/Granted literature
- US20200209773A1 TONER Public/Granted day:2020-07-02
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