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    • 40. 发明专利
    • Carrier for electrostatic charge developer
    • 静电充电开发商承运人
    • JPS617849A
    • 1986-01-14
    • JP12868484
    • 1984-06-22
    • Hitachi Metals Ltd
    • YAMAMOTO MIKIONOGUCHI KOUJIKAWANA KENICHI
    • G03G9/10G03G9/097G03G9/113
    • G03G9/1138G03G9/1135
    • PURPOSE:To make easy electrostatic charge to a negative polarity and to improve the holding property and durability of the electric charge by coating the surface of a core with a polyester resin contg. a charge controlling agent for negative chargeability and coupling agent. CONSTITUTION:The surface of the core is coated with the polyester resin contg. the charge controlling agent for negative chargeability and coupling agent. An amino silane coupling agent or titanium coupling agent is preferably used as the coupling agent. The polyester resin in such compsn. is easily electrostatically chargeable to the negative polarity and since the charge controlling agent for negative chargeability is incorporated therein, the toner is easily and stably chrged to the positive polarity when such resi is used together with the toner for development. The adhesive strength between the polyester resin and the core is increases and the durability of the carrier is improved by adding the coupling agent to the carrier. The image having the high quality is thus obtd. and the life is extended.
    • 目的:通过用聚酯树脂覆盖芯的表面,使容易的静电电荷成为负极性,并提高电荷的保持性和耐久性。 用于负电荷的电荷控制剂和偶联剂。 构成:芯的表面涂有聚酯树脂, 用于负电荷的电荷控制剂和偶联剂。 优选使用氨基硅烷偶联剂或钛偶联剂作为偶联剂。 这样的聚酯树脂。 容易地静电充电到负极性,并且由于其中带有用于负带电性的电荷控制剂,因此当与显影用调色剂一起使用时,调色剂容易且稳定地钳制成正极性。 通过向载体添加偶联剂,聚酯树脂和芯之间的粘合强度提高,载体的耐久性得到改善。 因此,具有高质量的图像。 并延长生命。