申请人:Nippon Paint Co., Ltd.
公开号:EP0324529A2
公开(公告)日:1989-07-19
Resinous microparticles useful in toner for electrophotography which are made of vinyl resin obtained by emulsion polymerization of at least one α,β-ethylenically unsaturated monomers in the presence of cationic surfactant having an onium salt structure and a polymerization initiator having an amidine or amidine salt structure and whose average particle diameter is in a range of from 0.01 to 1µ, and toner composition comprising toner particles and resinous microparticles as abovementioned are provided.
提供了用于电子照相墨粉的树脂微粒,它是由至少一种α,β-乙烯基不饱和单体在具有鎓盐结构的阳离子表面活性剂和具有脒或脒盐结构的聚合引发剂存在下进行乳液聚合得到的乙烯基树脂制成的,其平均颗粒直径在 0.01 至 1µ 之间,还提供了包含上述墨粉颗粒和树脂微粒的墨粉组合物。