申请人:SONY CORPORATION
公开号:EP0438746A1
公开(公告)日:1991-07-31
A developer for electrostatic electrophotography which comprises a composition of colorant particles, an electric charge supplying agent and a resin binder dispersed in a dispersion medium. The resin binder is a copolymer which has a polyoxyethylene units at side chains thereof, so that the interaction with the electric charge supplying agent is improved. The resultant developer ensures good resolution, gradation and fixing property and is suitable for wet development to give high-quality images. When the copolymer used as the resin binder has styrene units therein, its solubility in the dispersion medium is improved. The developer is either liquid or solid depending on the type of dispersion medium.
一种用于静电电致发光的显影剂,由分散在分散介质中的着色剂颗粒、电荷供给剂和树脂粘合剂组成。树脂粘合剂是一种共聚物,其侧链含有聚氧乙烯单元,从而改善了与电荷供给剂的相互作用。这样得到的显影剂可确保良好的分辨率、层次感和定影性能,适合湿法显影,以获得高质量的图像。当用作树脂粘合剂的共聚物中含有苯乙烯单元时,它在分散介质中的溶解性会得到改善。根据分散介质的类型,显影剂可以是液体或固体。