| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a polyester resin toner composition excellent in low- temperature fixability and offset resistance by adding an aliphatic ester having a specified melting point to a polyester resin toner. SOLUTION: This polyester resin toner composition contains polyester and an aliphatic ester having a melting point of 60-100 deg.C. The aliphatic ester is an aliphatic ester represented by the formula. In the formula R1 and R2, which may be the same or different, represent a 13-24C linear alkyl group. With an ester having a melting point lower than 60 deg.C, the storage stability of toner is deteriorated when it is made into the toner composition. With an ester having a melting point higher than 100 deg.C, the ester is not melted in the heating fixation by a heat roll, and an offset phenomenon is apt to occur. The use quantity of such an aliphatic ester is 0.1-30 pts.wt. to 100 pts.wt. polyester and, preferably, 1-15 pts.wt.</p> |
