Title:
LIQUID DEVELOPER
Document Type and Number:
WIPO Patent Application WO/2019/177083
Kind Code:
A1
Abstract:
The present invention provides a liquid developer which exhibits excellent dispersion stability of toner particles, while being suppressed in decrease of the volume resistivity over time.
A liquid developer which contains: toner particles which contain a binder resin; a carrier liquid; and a basic toner particle dispersant. This liquid developer is characterized in that: the basic toner particle dispersant is a primary amine; the binder resin has an acid value of 10 mgKOH/g or more; components having a molecular weight of 2,000 or less in the binder resin have an acid value of 5 mgKOH/g or less; and the components having a molecular weight of 2,000 or less in the binder resin have a hydroxyl value of 10 mgKOH/g or less.
Inventors:
TOKUNAGA YUZO (JP)
HIRASA TAKASHI (JP)
AKASHI YASUTAKA (JP)
NAKAJIMA MASATO (JP)
TSUCHIDA NAOHIKO (JP)
MATSUBARA AKIFUMI (JP)
TAKENAKA KOHJI (JP)
CHIMOTO YUYA (JP)
OCHI KOUICHIROU (JP)
MIYAKAI TOMOYO (JP)
HIRASA TAKASHI (JP)
AKASHI YASUTAKA (JP)
NAKAJIMA MASATO (JP)
TSUCHIDA NAOHIKO (JP)
MATSUBARA AKIFUMI (JP)
TAKENAKA KOHJI (JP)
CHIMOTO YUYA (JP)
OCHI KOUICHIROU (JP)
MIYAKAI TOMOYO (JP)
Application Number:
PCT/JP2019/010470
Publication Date:
September 19, 2019
Filing Date:
March 14, 2019
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
G03G9/13; G03G9/135
Domestic Patent References:
| WO2018097090A1 | 2018-05-31 |
Foreign References:
| JP2009244834A | 2009-10-22 | |||
| JP2011158791A | 2011-08-18 | |||
| JP2016061964A | 2016-04-25 | |||
| JP2016080764A | 2016-05-16 | |||
| JP2017198832A | 2017-11-02 | |||
| JP2017223791A | 2017-12-21 |
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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