TONER, TONER-HOUSING UNIT, AND IMAGE-FORMING APPARATUS

Title:

TONER, TONER-HOUSING UNIT, AND IMAGE-FORMING APPARATUS

Document Type and Number:

WIPO Patent Application WO/2017/159288

Kind Code:

A1

Abstract:

Provided is a toner that contains a binder resin, wherein: the toner contains 10-40 mass% of THF-insoluble components; the molecular weight distribution, as determined by gel permeation chromatography (GPC), of THF-insoluble components in the toner has a main peak within the range 10,000-16,000; the half value width of the main peak is a molecular weight of 60,000-90,000; and of THF-insoluble components in the toner, components having molecular weights of 2000 or less, as determined by GPC, are contained at a content of 15.0-25.0 mass% and components having molecular weights of 100,000 or more are contained at a content of 10.0 mass% or less.

Inventors:

OGAWA SATOSHI (JP)
SEKI MASAHIRO (JP)
SEKIGUCHI YOSHITAKA (JP)
MORIYA TOHRU (JP)

Application Number:

PCT/JP2017/007056

Publication Date:

September 21, 2017

Filing Date:

February 24, 2017

Export Citation:

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Assignee:

RICOH CO LTD (JP)
OGAWA SATOSHI (JP)
SEKI MASAHIRO (JP)
SEKIGUCHI YOSHITAKA (JP)
MORIYA TOHRU (JP)

International Classes:

G03G9/087; G03G9/08; G03G9/097

Domestic Patent References:

WO2007034813A1

2007-03-29

Foreign References:

JP2000227678A	2000-08-15
JP2003215844A	2003-07-30
JP2005134891A	2005-05-26
JP2004151443A	2004-05-27
JPH11282198A	1999-10-15
JP2012047771A	2012-03-08
JP2002040712A	2002-02-06
JPH1087837A	1998-04-07
US5422218A	1995-06-06
JP2016170342A	2016-09-23
JP2016170343A	2016-09-23
JP2016170345A	2016-09-23

Other References: