Invention Grant
- Patent Title: Magnetic toner and method for manufacturing magnetic toner
-
Application No.: US16438611Application Date: 2019-06-12
-
Publication No.: US10969704B2Publication Date: 2021-04-06
- Inventor: Hiroki Kagawa , Shuntaro Watanabe , Hiroki Akiyama , Tatsuya Saeki , Takashi Matsui
- 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: JPJP2018-113107 20180613,JPJP2019-074994 20190410
- Main IPC: G03G9/087
- IPC: G03G9/087 ; G03G9/083 ; C08F212/10 ; C08F220/46 ; C08F220/68 ; G03G9/08 ; G03G9/107 ; G03G9/113

Abstract:
Provided is a magnetic toner having a toner particle containing a binder resin and a magnetic body, wherein the binder resin contains a polymer A having a first monomer unit and a second monomer unit, the first polymerizable monomer is at least one selected from the group consisting of the (meth)acrylic acid esters having C18-36 alkyl groups, a content of the first monomer unit and a content of the second monomer unit based on the total moles of all monomer units in the polymer A are respectively 5.0 to 60.0 mol % and 20.0 to 95.0 mol %, and assuming that an SP value of the first monomer unit and the second monomer unit are taken as SP11 (J/cm3)0.5 and SP21(J/cm3)0.5, respectively, 3.00≤(SP21−SP11)≤25.00 is satisfied, and an oil absorption of the magnetic body is 5 to 40 ml/100 g.
Public/Granted literature
- US20190384192A1 MAGNETIC TONER AND METHOD FOR MANUFACTURING MAGNETIC TONER Public/Granted day:2019-12-19
Information query