Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Electrophotographic toner, method for producing toner, developer and image forming apparatus containing toner
An electrophotographic toner obtained from a dispersion or emulsion liquid of an oil phase containing a toner material in an aqueous medium, the toner including: a binder resin, wherein the toner material includes: (A) an epoxy resin prepolymer; (B) an adduct of a dihydric phenol with a polyalkylene oxide; (C) a phenolic compound, or an alcohol compound, or both thereof; and (D) a carboxylic acid compound, and wherein the binder resin includes a resin obtained by allowing the (A), the (B), the (C) and the (D) to react with each other.
Ricoh Company, Ltd.
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Daisuke Tsuyoshi Rintaro Masaki Hiroshi Satoyuki
Asahina Sugimoto Takahashi Watanabe Yamashita Sekiguchi