Title:
PRODUCTION METHOD OF TONER FOR ELECTROSTATIC CHARGE IMAGE DEVELOPMENT
Document Type and Number:
Japanese Patent JP2016057323
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a production method of a toner for electrostatic charge image development, which exhibits sufficient heat-resistant storage property while having excellent low-temperature fixability, and has excellent mechanical strength.SOLUTION: The production method of a toner for electrostatic charge image development aims to produce a toner comprising toner particles containing a binder resin made of an amorphous resin and a crystalline resin, a release agent, and a colorant. The method includes: a polymerization step in which a monomer for forming an amorphous resin is added to an aqueous medium in the presence of fine particles containing a crystalline resin and polymerized to obtain coated resin fine particles comprising the fine particles containing the crystalline resin coated with the amorphous resin; and an aggregation fusion step in which at least fine particles containing an amorphous resin, the coated resin fine particles, and fine particles containing a colorant are flocculated and fused in the presence of a flocculant in an aqueous medium to obtain toner particles. A surfactant at a concentration 1 to 5 times as a critical micelle concentration is added to the aqueous medium in the polymerization step.SELECTED DRAWING: None
Inventors:
KAMIYAMA MIKIO
FUKUDA HIROYUKI
HIRANO SHIRO
MATSUSHIMA ASAO
FUKUDA HIROYUKI
HIRANO SHIRO
MATSUSHIMA ASAO
Application Number:
JP2014180757A
Publication Date:
April 21, 2016
Filing Date:
September 05, 2014
Export Citation:
Assignee:
KONICA MINOLTA INC
International Classes:
G03G9/087
Domestic Patent References:
| JP2012255957A | 2012-12-27 | |||
| JP2012133161A | 2012-07-12 |
Other References:
吉田時行他, 新版 界面活性剤ハンドブック, vol. ４版, JPN6016036375, 20 May 2000 (2000-05-20), JP, pages 121頁, ISSN: 0003403364
Attorney, Agent or Firm:
Masahiko Oi