Invention Grant
- Patent Title: Toner, and external additive for toner
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Application No.: US15969192Application Date: 2018-05-02
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Publication No.: US10241430B2Publication Date: 2019-03-26
- Inventor: Sho Kimura , Shuhei Moribe , Takashi Matsui , Hiroyuki Tomono , Shotaro Nomura , Atsuhiko Ohmori , Takuya Mizuguchi , Tatsuya Saeki , Katsuhisa Yamazaki
- 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: JP2017-094209 20170510; JP2018-082313 20180423
- Main IPC: G03G9/09
- IPC: G03G9/09 ; G03G9/08 ; G03G9/083 ; G03G9/087

Abstract:
A toner comprising: a toner particle containing a binder resin and a colorant; and an external additive, wherein the external additive is a composite particle having an organic substance and an organosilicon polymer coating layer on the surface of the organic substance, and when a curve for the variation (dE′/dT) in the storage elastic modulus E′ of the toner with respect to temperature T [° C.] is obtained on the basis of a curve of the temperature T—the storage elastic modulus E′ [Pa] of the toner, as determined by powder dynamic viscoelasticity measurements of the toner, the relative minimum value on the lowest temperature side between the onset temperature and 90° C. is −1.35×108 or less.
Public/Granted literature
- US20180329323A1 TONER, AND EXTERNAL ADDITIVE FOR TONER Public/Granted day:2018-11-15
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