Title:
ELECTROPHOTOGRAPHIC TONER, DEVELOPER USING THE TONER, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE
Document Type and Number:
Japanese Patent JP2013068795
Kind Code:
A
Abstract:
To provide an electrophotographic toner that uses a crystalline resin accounting for at least 50 mass% or more of a binder resin as a substantial main component, and solves the problem of weakness in rubbing resistance of an output image that is unique to the crystalline resin without deteriorating fixability.
An electrophotographic toner contains at least colorant, a binder resin, and a mold release agent. The binder resin contains 50 mass% or more of a crystalline resin having an urethane skeleton and/or an urea skeleton, and the mold release agent is a microcrystalline wax.
Inventors:
NAKAYAMA SHINYA
YAMAMOTO JUNJI
SANTO HIDEYUKI
YAMASHITA DAIKI
AMEMORI SUZUKA
YAMADA MASAHIDE
YAMAMOTO JUNJI
SANTO HIDEYUKI
YAMASHITA DAIKI
AMEMORI SUZUKA
YAMADA MASAHIDE
Application Number:
JP2011207195A
Publication Date:
April 18, 2013
Filing Date:
September 22, 2011
Export Citation:
Assignee:
RICOH CO LTD
International Classes:
G03G9/087; G03G9/08; G03G15/08
Domestic Patent References:
| JP2008112069A | 2008-05-15 | |||
| JP2008052192A | 2008-03-06 | |||
| JP2004163515A | 2004-06-10 | |||
| JP2009237098A | 2009-10-15 | |||
| JP2009223055A | 2009-10-01 | |||
| JPH0922147A | 1997-01-21 |
Foreign References:
| WO2009122687A1 | 2009-10-08 |
Attorney, Agent or Firm:
Masami Sakai
Norio Kagami
Norio Kagami