LIQUID DEVELOPER - SAKATA INX CORP

Title:

LIQUID DEVELOPER

Document Type and Number:

WIPO Patent Application WO/2015/119145

Kind Code:

A1

Abstract:

Provided is a liquid developer that is for electrophotography or electrostatic recording and that has favorable particle uniformity, storage stability, fixability, and electrophoretic properties. Provided is a liquid developer wherein a coacervation method is used to granulate colored resin particles in an insulating solvent, the colored resin particles comprising at least a pigment, a basic-group-containing pigment dispersing agent, a granulating aid, and a binder resin that includes an acid-group-containing resin, the granulating aid being a carbodiimide compound that has at least one carbodiimide group, the ratio of the number of active hydrogens in the acid-group-containing resin to the number of carbodiimide groups in the carbodiimide compound being 1:≥0.01 but lower than 1:1, the liquid developer being formed by dispersing the colored resin particles in the insulating solvent by means of a particle dispersing agent.

Inventors:

IWASE KOJI (JP)
OKAMOTO KATSUTOSHI (JP)
SHIBATA HIDEO (JP)
MAEDA HIROHITO (JP)
INOUE TOMOAKI (JP)

Application Number:

PCT/JP2015/053084

Publication Date:

August 13, 2015

Filing Date:

February 04, 2015

Export Citation:

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Assignee:

SAKATA INX CORP (JP)

International Classes:

G03G9/13

Domestic Patent References:

WO2007061072A1	2007-05-31
WO2004003085A1	2004-01-08
WO2004000950A1	2003-12-31
WO2003076527A1	2003-09-18
WO2007108485A1	2007-09-27
WO2006118201A1	2006-11-09
WO2006101166A1	2006-09-28

Foreign References:

JP2013097294A	2013-05-20
JP2006257243A	2006-09-28
JP2004279732A	2004-10-07

Other References: