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Patent Searching and Data


Title:
IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/138845
Kind Code:
A1
Abstract:
Provided is an image forming apparatus including an image bearer, a developing unit configured to develop with a toner, an intermediate transfer member, and a transferring unit, wherein the intermediate transfer member is a laminate including a base layer and an elastic layer including particles at a surface thereof to form convex-concave shapes at the surface, the particles have volume resistivity of from 1×100 ohm*cm through 1×109 ohm*cm, the toner includes additive, an amount of the additive separated from the toner is from 20 percent by mass through 35 percent by mass relative to a total amount of the additive in the toner when a toner dispersion liquid in which the toner is dispersed in a dispersant is irradiated with ultrasonic wave vibration with an irradiation energy dose of 4 kJ, and the toner has a dielectric constant of 2.6 or greater but 3.9 or less.

Inventors:
TAKEI AKIO (JP)
INOUE DAISUKE (JP)
HISAKUNI DAICHI (JP)
KUBO HIDETAKA (JP)
OHMORI MASAHIRO (JP)
AWAMURA JUNICHI (JP)
Application Number:
PCT/JP2018/047160
Publication Date:
July 18, 2019
Filing Date:
December 21, 2018
Export Citation:
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Assignee:
RICOH CO LTD (JP)
TAKEI AKIO (JP)
INOUE DAISUKE (JP)
HISAKUNI DAICHI (JP)
KUBO HIDETAKA (JP)
OHMORI MASAHIRO (JP)
AWAMURA JUNICHI (JP)
International Classes:
G03G15/16; G03G9/08
Foreign References:
US20170315460A12017-11-02
EP3179312A22017-06-14
US20170285502A12017-10-05
JP2014170118A2014-09-18
US20020067934A12002-06-06
EP0414442A11991-02-27
JPH09230717A1997-09-05
JP2002162767A2002-06-07
JP2004354716A2004-12-16
JP2007328165A2007-12-20
JP2009075154A2009-04-09
JP2015148660A2015-08-20
JP5786181B22015-09-30
JP2012194223A2012-10-11
JP2004053918A2004-02-19
JP2011043759A2011-03-03
JP2007254558A2007-10-04
JP2002356654A2002-12-13
Attorney, Agent or Firm:
HIROTA, Koichi (JP)
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