| 摘要 |
PURPOSE:To improve the anti-offsetting property, fixability and blocking resistance of a toner over a wide fixing temp. range by incorporating specified two kinds of resins. CONSTITUTION:The principal resin components of this compsn. are a resin (A) having >=40 deg.C glass transition point and residual carboxyl groups and obtd. by allowing a copolymer of a styrene monomer with a (meth)acrylic ester monomer and a vinyl monomer having a carboxyl group to react with a compd. of a multivalent metal and a resin (B) which is a copolymer of a vinyl monomer having a (beta-methyl) glycidyl group with other vinyl monomer and has >=40 deg.C glass transition point. For example, the resin A is obtd. by allowing a copolymer of styrene with butyl acrylate and acrylic acid to react with MgO and the resin B is a copolymer of glycidyl methacrylate with styrene. |
