Title:
MAGNETIC IRON OXIDE PARTICLE POWDER, MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND TWO-COMPONENT SYSTEM DEVELOPER
Document Type and Number:
WIPO Patent Application WO/2012/133645
Kind Code:
A1
Abstract:
Provided are a magnetic iron oxide particle powder having high binding property with resin, and a magnetic carrier for an electrophotographic developer in which durability is improved by increasing adhesiveness between a magnetic carrier core and a coating resin. This magnetic iron oxide particle powder in which a plurality of granules are bound has an average particle size of 0.5-30 μm, and this magnetic carrier for an electrophotographic developer comprises spherical magnetic complex particles composed of magnetic iron oxide particles dispersed in a binder resin, and uses at least the magnetic iron oxide particle powder in which a plurality of granules are bound and which has an average particle size of 0.5-30 μm.
Inventors:
HARADA SHIGENORI (JP)
UEMOTO SHINJI (JP)
MISAWA HIROMITSU (JP)
KURITA EIICHI (JP)
AOKI KOSO (JP)
UEMOTO SHINJI (JP)
MISAWA HIROMITSU (JP)
KURITA EIICHI (JP)
AOKI KOSO (JP)
Application Number:
PCT/JP2012/058351
Publication Date:
October 04, 2012
Filing Date:
March 29, 2012
Export Citation:
Assignee:
TODA KOGYO CORP (JP)
HARADA SHIGENORI (JP)
UEMOTO SHINJI (JP)
MISAWA HIROMITSU (JP)
KURITA EIICHI (JP)
AOKI KOSO (JP)
HARADA SHIGENORI (JP)
UEMOTO SHINJI (JP)
MISAWA HIROMITSU (JP)
KURITA EIICHI (JP)
AOKI KOSO (JP)
International Classes:
C01G49/08; G03G9/107; G03G9/113
Foreign References:
JP2003192351A | 2003-07-09 | |||
JP2011013676A | 2011-01-20 | |||
JP2009230090A | 2009-10-08 | |||
JPH02220068A | 1990-09-03 | |||
JP2009167032A | 2009-07-30 | |||
JP2009230090A | 2009-10-08 | |||
JPH08259238A | 1996-10-08 | |||
JP2003192351A | 2003-07-09 | |||
JP2003323007A | 2003-11-14 | |||
JP2011013676A | 2011-01-20 |
Other References:
See also references of EP 2692692A4
Attorney, Agent or Firm:
OKADA, KAZUHIKO (JP)
Kazuhiko Okada (JP)
Kazuhiko Okada (JP)
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Claims: