发明名称 ELECTROSTATIC CHARGE IMAGE DEVELOPER
摘要 PURPOSE:To stabilize Q/M and to enhance image density by forming a developer composed of a coated carrier having different kinds of laminated coating layers and a toner containing a positive polar material in a binder resin. CONSTITUTION:The developer is composed of the coated carrier having different kinds of laminated coating layers and a toner containing a positive polar material in the binder resin. As the material of the coating layers, conventional ones, such as styrene resins, acrylic resin, silicone resins, epoxy resins, polyamide resins, and fluororesins, call be used, and the core material of 50-1,000mum diameter is coated with said resins. It is preferred to use a combination of the second coating layer higher in surface energy than the first coating layer, thus permitting the obtained binary developer to be stabilized in Q/W, and accordingly, high image density to be maintained.
申请公布号 JPS62218967(A) 申请公布日期 1987.09.26
申请号 JP19860060684 申请日期 1986.03.20
申请人 RICOH CO LTD 发明人 ASAHINA YASUO;INOUE SATORU;CHIBA SHUNICHI
分类号 G03G9/10;G03G9/08;G03G9/097;G03G9/113 主分类号 G03G9/10
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