Title:
DEVELOPING DEVICE, DEVELOPING METHOD, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
Document Type and Number:
Japanese Patent JP2015125283
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a developing device and a developing method enabling the suppression of inversion fogging under a high-temperature and high-humidity and the suppression of fogging immediately after the consumption of toner under a low-temperature and low-humidity environment; and an image forming apparatus and an image forming method including the same.SOLUTION: A developing device has a toner, a toner carrier, and a toner regulating member carried on the toner carrier. The toner has toner particles and inorganic fine particles, and the toner particles contains a binder resin, a magnetic body, and a sulfonic acid-based polymer. When the abundance of carbon atoms present on the surface of the toner particles is A, and the abundance of sulfur atoms present on the surface is E, E is 0.09 atomic% or more and 0.37 atomic% or less, and E/A is 0.0010 or more and 0.0040 or less. The toner carrier has a base substance, an elastic layer, and a surface layer including a urethane resin, and the urethane resin has a partial structure derived from the reaction of polyisocyanate with a compound represented by a structural formula (1).
Inventors:
OMORI ATSUHIKO
MAGOME MICHIHISA
MATSUI TAKASHI
URATANI KOZUE
YAMADA MAKI
ITO MINORU
MAGOME MICHIHISA
MATSUI TAKASHI
URATANI KOZUE
YAMADA MAKI
ITO MINORU
Application Number:
JP2013269664A
Publication Date:
July 06, 2015
Filing Date:
December 26, 2013
Export Citation:
Assignee:
CANON KK
International Classes:
G03G15/08; G03G9/08; G03G9/083; G03G9/087; G03G9/097
Domestic Patent References:
JP2007310118A | 2007-11-29 | |||
JP2013134440A | 2013-07-08 | |||
JP2008158216A | 2008-07-10 | |||
JPH11352770A | 1999-12-24 | |||
JP2007156435A | 2007-06-21 | |||
JP2004205895A | 2004-07-22 | |||
JP2014029496A | 2014-02-13 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa
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