Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Toner, method for producing the same, and developer
A method for producing a toner, containing: dispersing, in an aqueous medium, an oil phase which contains an organic solvent, and a binder resin component contained in the organic solvent, where the binder resin component contains a crystalline polyester resin and an amorphous polyester resin; and removing the organic solvent from the dispersion to obtain the toner, in which the dispersing further contains heating and dissolving the crystalline polyester and the amorphous polyester in the organic solvent to obtain a solution, cooling the solution so as to recrystallize the crystalline polyester resin, and mechanically pulverizing the recrystallized crystalline polyester resin so as to obtain a crystalline polyester dispersion.
Ricoh Company, Ltd.
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Junichi Tomomi Hiroshi Tsuyoshi Teruki
Awamura Suzuki Yamashita Sugimoto Kusahara