Invention Application
US20050227070A1 Magnetic iron oxide particles and magnetic toner using the same
有权
磁性氧化铁颗粒和使用其的磁性调色剂
- Patent Title: Magnetic iron oxide particles and magnetic toner using the same
- Patent Title (中): 磁性氧化铁颗粒和使用其的磁性调色剂
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Application No.: US11097377Application Date: 2005-04-04
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Publication No.: US20050227070A1Publication Date: 2005-10-13
- Inventor: Hiroshi Akai , Koso Aoki , Hiromitsu Misawa , Naoki Uchida , Ryo Iwai
- Applicant: Hiroshi Akai , Koso Aoki , Hiromitsu Misawa , Naoki Uchida , Ryo Iwai
- Applicant Address: JP Hiroshima-shi
- Assignee: TODA KOGYO CORPORATION
- Current Assignee: TODA KOGYO CORPORATION
- Current Assignee Address: JP Hiroshima-shi
- Priority: JP2004-115883 20040409
- Main IPC: C01G49/02
- IPC: C01G49/02 ; G03G9/083 ; H01F1/34 ; B32B5/16
Abstract:
There are provided magnetic iron oxide particles having an average particle diameter (Dp50) of primary particles of 0.05 to 0.3 μm, an average particle diameter (Da50) of secondary particles of 0.055 to 0.9 μm, and a ratio of the average particle diameter (Da50) of the secondary particles to the average particle diameter (Dp50) of the secondary particles (Da50/Dp50) of 1.1 to 3.0, as well as a magnetic toner containing the magnetic iron oxide particles. The magnetic iron oxide particles of the present invention are in the form of small agglomerated particles and exhibit an excellent dispersibility, and the magnetic toner using the magnetic iron oxide particles is excellent in electrification stability.
Public/Granted literature
- US07144626B2 Magnetic iron oxide particles and magnetic toner using the same Public/Granted day:2006-12-05
Information query
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