New electrostatographic developers are provided, containing dual function polymeric binder/charge agents. The new developers contain toner particles comprising a vinyl addition binder polymer containing a quaternary phosphonium salt, wherein the phosphonium salt has a cationic portion comprising a phosphorus atom covalently bonded to the binder polymer.
新的静电成像开发剂被提供,其中包含双重功能的聚合物粘合剂/电荷剂。新的开发剂包含包含一种含有季
铵磷盐的
乙烯基加成型聚合物的调色剂颗粒,其中
磷盐具有阳离子部分,包括与粘合剂聚合物共价结合的
磷原子。