| 摘要 |
PROBLEM TO BE SOLVED: To provide toner excellent in charging characteristics and having a uniform shape and a narrow particle size distribution, and to provide a toner manufacturing method and a toner manufacturing apparatus by which such a toner can be efficiently manufactured in an environmentally friendly way. SOLUTION: The toner manufacturing method uses a dispersion in which a dispersoid containing a resin material is dispersed in a dispersion medium and which contains a dispersant having a function to improve the dispersibility of the dispersoid. The dispersant has a molecular structure with a carbon-carbon unsaturated bond, and after discharging the dispersion as a liquid drop-like discharge, this discharge is ozonized. The dispersion medium consists mainly of water and/or liquid excellent in compatibility with water. The ozonization is carried out by exposing the discharge to an atmosphere containing ozone at a concentration of 0.1-100 ppm. A preferred exposure time of the discharge to the atmosphere is 0.1-30 min. COPYRIGHT: (C)2006,JPO&NCIPI |
