| 摘要 |
<p>A toner binder for elecrophotography excellent in low temperature fixing properties and anti-hot offset properties comprising styrene (co)polymer(s) (A) comprising a modified styrene (co) polymer modified by unsaturated dicarboxylic acids of C4 to C30, ester-forming derivatives thereof, (meth) acrylic acid, or alkyl (meth) acrylates (alkyl group of C1 to C24) ; said modified styrene (co)polymer containing constituent units derived from a monomer used in the modification is 0.1 to 9wt%, and a toner using the toner binder. The (co) polymer (s) (A) includes a species that shows at least one GPC peak each in the regions of the molecular weight of 2,000 to 20,000 and 50,000 to 5 millions.</p> |
