| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toner for electrostatic charge image development having excellent low-temperature fixability and high temperature offset resistance, having a wide fixable range, excellent storage stability and suppression of formation of uneven stripes on a developing roller. <P>SOLUTION: The toner for electrostatic charge image development comprises at least a binder resin. The binder resin comprises a crystalline resin and an amorphous resin. The crystalline resin comprises a crystalline polyester obtained by condensation polymerization of an alcohol component containing an aliphatic diol having 2 to 10 carbon atoms and a carboxylic acid component containing an aromatic dicarboxylic acid compound and an aromatic tricarboxylic or higher polycarboxylic acid. The crystalline polyester has a weight average molecular weight of 20,000 to 150,000. A weight ratio of the crystalline resin to the amorphous resin (crystalline resin/amorphous resin) ranges from 55/45 to 95/5. <P>COPYRIGHT: (C)2013,JPO&INPIT |
