- 专利标题: MAGNETIC CARRIER, TWO-COMPONENT DEVELOPER, AND DEVELOPER FOR REPLENISHMENT
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申请号: EP22152371.5申请日: 2022-01-20
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公开(公告)号: EP4036655A2公开(公告)日: 2022-08-03
- 发明人: ONOZAKI, Yuto , MURAYAMA, Ryuji , YOSHIDA, Nobuhiro , MINAGAWA, Hironori
- 申请人: CANON KABUSHIKI KAISHA
- 申请人地址: JP OHTA-KU Tokyo 146-8501 30-2 SHIMOMARUKO 3-CHOME
- 代理机构: TBK
- 优先权: JP2021213013 20211227
- 主分类号: G03G9/107
- IPC分类号: G03G9/107 ; G03G9/113
摘要:
The magnetic carrier is a magnetic carrier including a magnetic core and a coating resin configured to coat the surface of the magnetic core, wherein the coating resin contains a graft resin A and a graft resin B, wherein the coating resin (i) contains 1.0 mass% or more and 50.0 mass% or less of the graft resin A, and (ii) contains 50.0 mass% or more and 99.0 mass% or less of the graft resin B, wherein the graft resin A has a unit Y1 represented by the following formula (1) and a unit Y2 represented by the following formula (2), and wherein the graft resin B (i) is a comb-shaped polymer having, as a branch, at least one moiety selected from, for example, a styrene-based polymer moiety and a (meth)acrylate-based polymer moiety, and (ii) contains the polysiloxane structure moiety at a content of 0.1 mass% or less.
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