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Title:
MAGNETIC CARRIER, TWO-COMPONENT DEVELOPER AND IMAGE-FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/016605
Kind Code:
A1
Abstract:
A magnetic carrier which can be developed at low electric field intensity using a toner having high coloring power, while maintaining gradation properties, thereby enabling formation of a high-quality image.  The magnetic carrier comprises magnetic carrier particles each having at least a porous magnetic core particle and a resin.  The electric field intensity right before the breakdown of the magnetic carrier is not less than 1300 V/cm but not more than 5000 V/cm.

Inventors:
BABA YOSHINOBU (JP)
ISHIGAMI KOH (JP)
ENDO TOMOKO (JP)
FUJIKAWA HIROYUKI (JP)
NAKAMURA KUNIHIKO (JP)
KOMATSU NOZOMU (JP)
INOUE CHIKA (JP)
ITAKURA TAKAYUKI (JP)
Application Number:
PCT/JP2009/064093
Publication Date:
February 11, 2010
Filing Date:
August 04, 2009
Export Citation:
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Assignee:
CANON KK (JP)
BABA YOSHINOBU (JP)
ISHIGAMI KOH (JP)
ENDO TOMOKO (JP)
FUJIKAWA HIROYUKI (JP)
NAKAMURA KUNIHIKO (JP)
KOMATSU NOZOMU (JP)
INOUE CHIKA (JP)
ITAKURA TAKAYUKI (JP)
International Classes:
G03G9/113; G03G9/08; G03G9/107
Foreign References:
JP2004302408A2004-10-28
JP2008122938A2008-05-29
JPH07225497A1995-08-22
JP2759464B21998-05-28
JP2954326B21999-09-27
JP2890727B21999-05-17
JP4001606B22007-10-31
JP2001034039A2001-02-09
JP2000330342A2000-11-30
JPH08160671A1996-06-21
JP2006337579A2006-12-14
JP2007057943A2007-03-08
JP2007218955A2007-08-30
JPH07120086A1995-05-12
JP2005195674A2005-07-21
JP2006195079A2006-07-27
Other References:
See also references of EP 2312400A4
Attorney, Agent or Firm:
OKABE, Masao et al. (Fuji Bldg. 2-3, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, JP)
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