Invention Grant
- Patent Title: Magnetic carrier and two-component developer
-
Application No.: US14129493Application Date: 2012-06-21
-
Publication No.: US09811019B2Publication Date: 2017-11-07
- Inventor: Kentaro Kamae , Nozomu Komatsu , Koh Ishigami , Yoshinobu Baba
- Applicant: Kentaro Kamae , Nozomu Komatsu , Koh Ishigami , Yoshinobu Baba
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JP2011-144644 20110629
- International Application: PCT/JP2012/066463 WO 20120621
- International Announcement: WO2013/002296 WO 20130103
- Main IPC: G03G9/10
- IPC: G03G9/10 ; G03G9/113 ; G03G9/107

Abstract:
A magnetic carrier is provided which can suppress a decrease in glossiness even in a long term use for POD which requires high glossiness. A magnetic carrier includes a filled core particle in which a silicone resin is filled in pores of a porous magnetic core particle and a vinyl resin coating a surface of the filled core particle. In a pore distribution of the porous magnetic core particle measured by a mercury intrusion method, a cumulative pore volume in a pore diameter range of 0.1 to 3.0 μm is 35.0 to 95.0 mm3/g, and in a pore distribution of the filled core particle measured by a mercury intrusion method, a cumulative pore volume in a pore diameter range of 0.1 to 3.0 μm is 3.0 to 15.0 mm3/g. The magnetic carrier includes 1.2 to 3.0 parts by mass of the vinyl resin to 100.0 parts by mass of the filled core particle.
Public/Granted literature
- US20140220487A1 MAGNETIC CARRIER AND TWO-COMPONENT DEVELOPER Public/Granted day:2014-08-07
Information query