Title:
LIQUID DEVELOPER
Document Type and Number:
WIPO Patent Application WO/2012/032847
Kind Code:
A1
Abstract:
This liquid developer contains toner particles which each comprise both a resin and a pigment, wherein the resin contains a vinyl copolymer resin that comprises, as constituent monomers, a first monomer consisting of at least one monomer selected from the group consisting of styrene (which may be substituted with lower alkyl), lower alkyl acrylates and lower alkyl methacrylates and a second monomer consisting of at least one monomer selected from the group consisting of acrylic acid and methacrylic acid, with the proportion of the second monomer being 5 to 25mol%, and the pigment comprises a first pigment and a second pigment at a specific ratio, the first pigment being carbon black, and the second pigment being at least one pigment selected from the group consisting of copper phthalocyanine blue pigment, phthalocyanine green pigment, carmine pigments, naphthol pigments and quinacridone pigments.
Inventors:
YAMADA CHIAKI (JP)
YOSHIE NAOKI (JP)
MORIGUCHI MIYUKI (JP)
YOSHIE NAOKI (JP)
MORIGUCHI MIYUKI (JP)
Application Number:
PCT/JP2011/065860
Publication Date:
March 15, 2012
Filing Date:
July 12, 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:
G03G9/13; G03G9/12
Foreign References:
| JP2008524640A | 2008-07-10 | |||
| JP2007528006A | 2007-10-04 | |||
| JPS60108865A | 1985-06-14 | |||
| JPS59102253A | 1984-06-13 | |||
| JPS5313926A | 1978-02-08 | |||
| JP2009145535A | 2009-07-02 | |||
| JP2003195573A | 2003-07-09 |
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: