Invention Grant
US09201329B2 Porous ferrite core material for electrophotographic developer, resin-coated ferrite carrier and electrophotographic developer using the ferrite carrier
有权
用于电子照相显影剂的多孔铁氧体芯材料，树脂涂覆的铁氧体载体和使用铁氧体载体的电子照相显影剂
- Patent Title: Porous ferrite core material for electrophotographic developer, resin-coated ferrite carrier and electrophotographic developer using the ferrite carrier
- Patent Title (中): 用于电子照相显影剂的多孔铁氧体芯材料，树脂涂覆的铁氧体载体和使用铁氧体载体的电子照相显影剂
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Application No.: US13738324Application Date: 2013-01-10
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Publication No.: US09201329B2Publication Date: 2015-12-01
- Inventor: Koji Aga , Makoto Ishikawa , Masashi Aoki
- Applicant: Powdertech Co., Ltd.
- Applicant Address: JP Chiba
- Assignee: POWDERTECH CO., LTD.
- Current Assignee: POWDERTECH CO., LTD.
- Current Assignee Address: JP Chiba
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2012-005402 20120113
- Main IPC: G03G9/10
- IPC: G03G9/10 ; G03G9/107
Abstract:
A porous ferrite core material for an electrophotographic developer wherein the apparent density thereof is 1.5 to 1.9 g/cm3, the shape factor SF-2 thereof is 101 to 110 and the magnetization as measured with a VSM at 1K·1000/4π·A/m is 40 to 60 Am2/kg, a resin-coated ferrite carrier for an electrophotographic developer obtained by coating the surface of the porous ferrite core material with a resin, and an electrophotographic developer using the ferrite carrier.
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