申请人:EASTMAN KODAK COMPANY
公开号:EP0376202A2
公开(公告)日:1990-07-04
An electrophotographic dry toner having excellent properties with respect to charging, RH stability and fusing is made in a process in which the binder polymer is formed by suspension polymerizing a styrene-acrylic monomer mixture in the presence of a polyester-promoted colloidal silica suspending agent which is free of other hydrophilic polymers. The resulting polymer is melt blended with toner addenda such as a colorant and a charge control agent and the mixture is pulverized to form the toner composition.
一种在充电、相对湿度稳定性和熔融方面具有优异性能的电子照相干墨粉是通过以下工艺制成的:粘合剂聚合物是在不含其他亲水性聚合物的聚酯促进胶体二氧化硅悬浮剂存在下,通过悬浮聚合苯乙烯-丙烯酸单体混合物形成的。生成的聚合物与着色剂和电荷控制剂等调色剂添加剂熔融混合,然后将混合物粉碎,形成调色剂组合物。