Title:
強磁性材料粉、電子写真現像剤用キャリア及びこれらの製造方法、並びに電子写真現像剤
Document Type and Number:
Japanese Patent JP4803730
Kind Code:
B2
Abstract:
A ferromagnetic material powder comprising a magnetic oxide which is a complex of a magnetite phase and a ferrite phase, wherein the ferromagnetic material powder has a spinel crystal structure and a magnetoplumbite crystal structure, and in the spinel crystal structure, the content of Fe 3+ in site A is 35 to 50% and the content of Fe 2+ in site B is 30 to 45%, a carrier for an electrophotographic developer, a process for producing them and an electrophotographic developer.
More Like This:
Inventors:
Takao Sugiura
Kayamoto Kino
Kayamoto Kino
Application Number:
JP2006093674A
Publication Date:
October 26, 2011
Filing Date:
March 30, 2006
Export Citation:
Assignee:
Powdertech Co., Ltd.
International Classes:
H01F1/34; C01G49/00; G03G9/10; G03G9/107; G03G9/113; H01F1/00
Domestic Patent References:
| JP2003034533A | ||||
| JP2001042573A | ||||
| JP9134036A | ||||
| JP2088429A |
Attorney, Agent or Firm:
Katsuhiro Yoshimura