| 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:This compsn. contains resins (A), (b) and has >=40 deg.C glass transition point. The resin A has residual carboxyl groups and is obtd. by allowing a copolymer of a styrene monomer with a (meth) acrylic ester monomer and 1-20 wt.% vinyl monomer (a) having a carboxyl group to react with a compd. of a multivalent metal such a MgO in 0.1-1 molar ratio of the compd. to the monomer (a). The resin B is a copolymer of a vinyl monomer (b) having a (beta-methyl)-glycidyl group with other vinyl monomer and satisfies 0.1-10 molar ratio of the monomer (b) to the monomer (a). |
