| 摘要 |
An electrophotographic developer comprising a toner and a carrier is disclosed. The toner contains a toner binder resin, a colorant and a releasing agent, and a carrier contains a magnetic particles dispersed in a carrier binder resin, wherein the releasing agent contained in toner is composed of from 40 to 98% by weight of a first releasing agent component of an ester compound and 60 to 2% by weight of a second releasing agent component of a hydrocarbon compound having a branched-chain structure, and the carrier has a shape coefficient SF-1 of from 1.0 to 1.2 and a shape coefficient S-2 of from 1.1 to 2.5, and a volume based median diameter of from 10 to 100 mum.
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