| 摘要 |
PURPOSE:To obtain stably a fine visible image at all times by using a specified polyester resin as a binder and adding modified polyolefin wax so as to lower the minimum fixing temp. as well as to provide sufficient anti-offsetting properties. CONSTITUTION:A polyester resin contg. >=5wt% chloroform-insoluble component is used as a binder, and a coloring agent, other components and about 1-20wt% wax of a polyolefin block- or graft-copolymerized with an aromatic vinyl monomer (modified PO) are added. By adding the modified PO wax to the polyester resin having a peculiar effect, the minimum fixing temp. can be lowered while keeping the offsetting causing temp. high. The modified PO wax has high compatibility with the binder, and the modifying component redues the stickiness and increases the flowability. The binder has high noncoagulability. Thus, superior developing power and transferabilty are provided, and a fine visible image can be stably obtd. at all times. |
