Title:
電子写真用トナーの製造方法
Document Type and Number:
Japanese Patent JP4751217
Kind Code:
B2
Abstract:
The present invention relates to a process for readily producing a toner for electrophotography which contains toner particles having a small particle size and a narrow particle size distribution, and a toner for electrophotography having a small particle size and a narrow particle size distribution which is produced by the above process. There is provided a process for producing a toner for electrophotography which includes the steps of (A) finely dispersing a resin binder in an aqueous medium in the presence of a nonionic surfactant to prepare a dispersion of resin binder-containing fine particles; (B) aggregating the resin binder-containing fine particles obtained in the step (A) together to prepare a dispersion of mother particles; (C) adding a dispersion of a resin binder-containing fine particles at one time or sequentially in several divided parts to the dispersion of the mother particles obtained in the step (B) to prepare aggregated particles thereof; and (D) coalescing the aggregated particles obtained in the step (C), as well as a toner for electrophotography which is produced by the above process.
Inventors:
Kazuhiro Ishikawa
Application Number:
JP2006065776A
Publication Date:
August 17, 2011
Filing Date:
March 10, 2006
Export Citation:
Assignee:
Kao Corporation
International Classes:
G03G9/087; G03G9/08
Domestic Patent References:
| JP2006018227A | ||||
| JP2005266317A | ||||
| JP2005266565A | ||||
| JP2004012650A | ||||
| JP2005099233A | ||||
| JP10026842A |
Foreign References:
| WO2005116779A1 |
Attorney, Agent or Firm:
Tamotsu Otani