| 摘要 |
A heat-fixable developer for electrophotography comprising a binder resin (A), a colorant (B) and a releasing agent (C), to be used favorably for electrostatic toner, which developer exhibits no offset phenomenon and causes no staining on the carrier, on the photosensitive body and on the heating roller and is superior in the releasing easiness of the heating roller upon the heat-fixing, in the anti-blocking property and in the fixing performance,wherein the releasing agent (C) comprises at least one ethylene/aromatic vinyl compound copolymer selected from the group consisting of copolymer i) and copolymer ii), the copolymer i) being an ethylene/aromatic vinyl compound copolymer obtained by co-polymerizing ethylene and an aromatic vinyl compound in the presence of a metallocene catalyst (D) and the copolymer ii) being an ethylene/aromatic vinyl compound copolymer obtained by a heat-degradation of a copolymer produced by co-polymerizing ethylene and an aromatic vinyl compound in the presence of a metallocene catalyst (D).
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