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Title:
CARRIER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT, DEVELOPER, IMAGE FORMING METHOD, AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2014081455
Kind Code:
A
Abstract:

To provide carrier and two-component developer configured to develop a stable amount of toner to obtain a uniform image with excellent color reproducibility for a long time, without any influence of toner consumption history of a previous image, and to provide an image forming method and apparatus using the same.

Carrier for electrostatic latent image development includes a coating layer containing at least a binder resin and a fine particle on a carrier core material. In the carrier, a ratio of exposed surface area of the core material with respect to surface area of the core material is 0.1-5.0%, a ratio of maximum exposed surface area of the exposed core material with respect to the surface area of the core material is 0.03% or less, and the binder resin is contained at 2.8-4.6 parts by weight with respect to 100 parts by weight of the core material.


Inventors:
SAKATA KOICHI
TANIGUCHI SHIGENORI
IWATSUKI HITOSHI
HIGASHIMATSU HIROSHI
TANO TOYOAKI
KISHIDA HIROYUKI
Application Number:
JP2012228583A
Publication Date:
May 08, 2014
Filing Date:
October 16, 2012
Export Citation:
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Assignee:
RICOH CO LTD
International Classes:
G03G9/113
Domestic Patent References:
JP2003167390A2003-06-13
JP2011150150A2011-08-04
JP2008203624A2008-09-04
JP2011145648A2011-07-28
JP2012058448A2012-03-22
JP2007286092A2007-11-01
JP2010256759A2010-11-11
Foreign References:
US20110086307A12011-04-14
US20030091923A12003-05-15
US20080199799A12008-08-21
US20070243479A12007-10-18
Attorney, Agent or Firm:
Hidehiko Takei
Yasuo Yoshimura