Title:
LIQUID DEVELOPER
Document Type and Number:
WIPO Patent Application WO/2011/158611
Kind Code:
A1
Abstract:
The disclosed liquid developer is characterized by: containing toner particles, an insulating liquid, and a dispersing agent; said toner particles containing at least resin and a pigment dispersed within said resin; said resin being a polyester resin that contains, as an acid component, an aromatic compound that is at least trifunctional at a mole ratio of 4-44% with respect to all the acid components; said pigment containing a first pigment and a second pigment; said first pigment being carbon black and being contained at 12-40 masses for every 100 masses of said resin; said second pigment comprising at least one pigment selected from the group consisting of a copper phthalocyanine blue pigment, a phthalocyanine green pigment, a carmine pigment, a naphthol pigment, and a quinacridone pigment, and being contained at 10-100 mass% with respect to said first pigment.
Inventors:
YAMADA CHIAKI (JP)
YOSHIE NAOKI (JP)
MORIGUCHI MIYUKI (JP)
YOSHIE NAOKI (JP)
MORIGUCHI MIYUKI (JP)
Application Number:
PCT/JP2011/061762
Publication Date:
December 22, 2011
Filing Date:
May 23, 2011
Export Citation:
Assignee:
KONICA MINOLTA HOLDINGS INC (JP)
YAMADA CHIAKI (JP)
YOSHIE NAOKI (JP)
MORIGUCHI MIYUKI (JP)
YAMADA CHIAKI (JP)
YOSHIE NAOKI (JP)
MORIGUCHI MIYUKI (JP)
International Classes:
G03G9/12; G03G9/13
Foreign References:
| JPS63123058A | 1988-05-26 | |||
| JPS5237435A | 1977-03-23 | |||
| JPS6296954A | 1987-05-06 |
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
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Claims: