Invention Publication
- Patent Title: TONER, DEVELOPER, TONER HOUSING UNIT, IMAGE FORMING APPARATUS, AND METHOD OF FORMING IMAGE
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Application No.: US18175757Application Date: 2023-02-28
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Publication No.: US20230280670A1Publication Date: 2023-09-07
- Inventor: Tsukiko TAKAHASHI , Mitsuaki Hirose , Yohichi Kitagawa , Suzuka Karato , Hiroshi Yamada
- Applicant: Tsukiko TAKAHASHI , Mitsuaki Hirose , Yohichi Kitagawa , Suzuka Karato , Hiroshi Yamada
- Applicant Address: JP Shizuoka
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Priority: JP 22032922 2022.03.03
- Main IPC: G03G9/097
- IPC: G03G9/097 ; G03G15/08 ; G03G9/08 ; C08G63/16 ; G03G9/087

Abstract:
[Summary] An object of the present invention is to provide a toner that has both low-temperature fixability and heat-resistant storage stability, suppresses contamination of cleaning parts and photoconductors, and has excellent charging stability.
[Tasks] A toner includes toner based particles containing a binder resin, a colorant, and a wax; and fine resin particles and an inorganic external additive that are present on a surface of the toner based particles, wherein a coverage of the fine resin particles is in a range from 30% to 70%, and wherein the inorganic external additive covers a surface of oxide of a metal element with hydroxide of a metal element.
[Tasks] A toner includes toner based particles containing a binder resin, a colorant, and a wax; and fine resin particles and an inorganic external additive that are present on a surface of the toner based particles, wherein a coverage of the fine resin particles is in a range from 30% to 70%, and wherein the inorganic external additive covers a surface of oxide of a metal element with hydroxide of a metal element.
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