发明授权
- 专利标题： Two-component developer, container filled with the two-component developer, and image formation apparatus
- 专利标题（中）： 双组分显影剂，充满双组分显影剂的容器和成像装置
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申请号： US10231252申请日： 2002-08-30
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公开(公告)号： US06544704B1公开(公告)日： 2003-04-08
- 发明人: Hiroaki Matsuda , Masanori Suzuki , Akemi Sugiyama , Hiroto Higuchi , Tsunemi Sugiyama , Fumihiro Sasaki , Yasuaki Iwamoto , Hiroshi Nakai , Kumi Hasegawa
- 申请人： Hiroaki Matsuda , Masanori Suzuki , Akemi Sugiyama , Hiroto Higuchi , Tsunemi Sugiyama , Fumihiro Sasaki , Yasuaki Iwamoto , Hiroshi Nakai , Kumi Hasegawa
- 优先权： JP2000-151041 20000503; JP2000-239220 20000807
- 主分类号： G03G9087
- IPC分类号： G03G9087
摘要：
A two-component developer comprises a toner which contains at least a resin and a colorant and to which an external additive is added, and a carrier. The toner has a number average molecular weight (Mn) not greater than 3,000 and contains particles having a molecular weight not greater than 1,000 in an amount not less than 40 number %. The carrier satisfies the relation 3,000,000≦&sgr;1000×Dc3≦20,000,00 (1) where &sgr;1000 represents a magnetization (emu/g) of the carrier at 1,000 oersted, and Dc represents a volume average particle diameter (&mgr;m) of the carrier.
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