| US 7,608,376 B2 | ||
| Method of manufacturing liquid developer, liquid developer, and image forming apparatus | ||
| Satoru Miura, Matsumoto (Japan); Hiroshi Kaiho, Matsumoto (Japan); Takashi Teshima, Shiojiri (Japan); Koji Akioka, Matsumoto (Japan); and Ken Ikuma, Suwa (Japan) | ||
| Assigned to Seiko Epson Corporation, Tokyo (Japan) | ||
| Filed on Feb. 22, 2007, as Appl. No. 11/677,964. | ||
| Claims priority of application No. 2006-049230 (JP), filed on Feb. 24, 2006; and application No. 2006-284317 (JP), filed on Oct. 18, 2006. | ||
| Prior Publication US 2007/0202431 A1, Aug. 30, 2007 | ||
| Int. Cl. G03G 9/12 (2006.01) | ||
| U.S. Cl. 430—115 [430/137.22] | 14 Claims |
| 1. A method of manufacturing a liquid developer, the method comprising:
forming a water-based emulsion by dispersing a dispersoid mainly containing a resin material in a water-based liquid;
forming associated particles having an average particle size of 1˜10 μm by adding an electrolyte to the water-based emulsion
and associating the dispersoid having an average particle size of 0.01˜3 μm in the water-based emulsion;
obtaining the associated particles by drying the dispersoid;
mixing the associated particles with a first insulation liquid;
disintegrating the associated particles in the first insulation liquid so as to obtain toner particles having an average particle
size of 1˜5 μm; and
adding a second insulation liquid that is different from the first insulation liquid.
|