| 摘要 |
<p>PURPOSE:To prevent the formation of toner scum on the surface of a carrier over the prolonged life of a developer while securing low temp. fixability and to stably keep carrier resistance and charge quantity. CONSTITUTION:A toner contains a polyester resin as a main component of a binding resin and a compound expressed by a formula (in the formula, R<1> expresses 7-24C alkyl group, aralkyl group or alkenyl group, each of A and A' is hydrogen atom, methyl group or-CH2CH2OR<2> (<2>is hydrogen atom, 8-24C alkyl group, aralkyl group or alkenyl group), (n) expresses 0 or 1). An electrostatic charge image developer composition is composed of the toner and the carrier composed of a porous amorphous iron powder having rugged part on the surface.</p> |
