| US 7,550,245 B2 | ||
| Toner and production method of the same, and image forming method | ||
| Ryota Inoue, Numazu (Japan); Shigeru Emoto, Numazu (Japan); Yohichiroh Watanabe, Fuji (Japan); Naohiro Watanabe, Sunto-gun (Japan); Masahide Yamada, Numazu (Japan); Akinori Saitoh, Numazu (Japan); Masahiro Ohki, Numazu (Japan); and Tsunemi Sugiyama, Yokohama (Japan) | ||
| Assigned to Ricoh Company, Ltd., Tokyo (Japan) | ||
| Filed on Dec. 22, 2005, as Appl. No. 11/313,817. | ||
| Claims priority of application No. 2004-381368 (JP), filed on Dec. 28, 2004; application No. 2004-381408 (JP), filed on Dec. 28, 2004; and application No. 2005-060995 (JP), filed on Mar. 04, 2005. | ||
| Prior Publication US 2006/0160011 A1, Jul. 20, 2006 | ||
| Int. Cl. G03G 5/00 (2006.01) | ||
| U.S. Cl. 430—137.17 [430/109.4] | 29 Claims |
| 1. A method for producing a toner comprising:
dissolving and dispersing toner materials in an organic solvent, thereby preparing a dissolved and dispersed solution of the
toner materials,
dispersing the dissolved and dispersed solution as dispersion particles in an aqueous medium containing no organic resin fine
particles, thereby preparing an oil droplet-in-water dispersion, and
adding organic resin fine particles in the oil droplet-in-water dispersion and granulating the toner, thereby producing the
toner in the presence of the organic resin fine particles.
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