Patent ID: 7348121
Filing Date: 2008-03-25
Classification: G03G

Abstract:
1. A method for preparing a toner comprising toner particles including a binder resin, and at least two kinds of particulate resins located on a surface of the toner particles, comprising: dispersing a compound having an active hydrogen, and a polymer capable of reacting with the active hydrogen of the compound in an aqueous medium including the at least two kinds of particulate resins; and reacting the polymer with the compound to prepare the toner particles, which include the binder resin and on the surface of which the at least two kinds of particulate resins are present, and wherein the toner satisfies at least one of the following relationships (1) and (2): wherein TgA and TgB represent glass transition temperatures of a particulate resin (A) having a highest glass transition temperature and a particulate resin (B) having a lowest glass transition temperature among the at least two kinds of particulate resins, respectively, and wherein Mwc and Mwd represent weight average molecular weights of tetrahydrofuran-soluble components of a particulate resin (C) having a highest weight average molecular weight and tetrahydrofuran-soluble components of a particulate resin (D) having a lowest weight average molecular weight among the at least two kinds of particulate resins, respectively, wherein Mwc>Mwd.