Title:
TONER AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/088667
Kind Code:
A1
Abstract:
A toner comprising core particles formed by mixing in an aqueous medium at least
a first resin particle dispersion liquid having first resin particles dispersed
therein, a colorant particle dispersion liquid having colorant particles dispersed
therein and a wax particle dispersion liquid having wax particles dispersed
therein so as to effect aggregation, wherein the colorant contains carbon black
of 45 to 70 DBP oil absorption rate (ml/100 g) and wherein the wax contains wax of
50 to 90°C endothermic peak temperature (referred to as melting point Tmwl(°C))
according to the DSC method. Accordingly, there are provided a toner, and process
for producing the same, that realize preparation of a small-particle-diameter
toner with sharp particle size distribution without the need of classifying
operation, prevention of voiding and scattering at the time of transfer, and
attainment of high transfer efficiency.
Inventors:
YUASA YASUHITO
SOGA MAMORU
ARASE HIDEKAZU
MAEDA MASAHISA
SOGA MAMORU
ARASE HIDEKAZU
MAEDA MASAHISA
Application Number:
PCT/JP2006/323666
Publication Date:
August 09, 2007
Filing Date:
November 28, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
YUASA YASUHITO
SOGA MAMORU
ARASE HIDEKAZU
MAEDA MASAHISA
YUASA YASUHITO
SOGA MAMORU
ARASE HIDEKAZU
MAEDA MASAHISA
International Classes:
G03G9/08; G03G9/087
Domestic Patent References:
| WO2005050328A2 | 2005-06-02 | |||
| WO1999012078A1 | 1999-03-11 |
Foreign References:
| JP2003241426A | 2003-08-27 | |||
| JP2005148101A | 2005-06-09 | |||
| JP2005250154A | 2005-09-15 |
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (OAP Tower 8-30, Tenmabashi 1-chome, Kita-k, Osaka-shi Osaka, JP)
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