Carrier for use in electrophotographic developers
AssigneesKanto Denka Kogyo Co., Ltd., Höganäs AB
InventorsMitsuhiro Katayama, Kenkichi Hara, Kazuyoshi Oka, Ulf Engstrom, Svenn E. Larrssen
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Abstract
A novel carrier material useful in conjunction with a toner for preparing a two-component developer for electrophotographic processes is provided. The carrier comprises a spherical magnetite particulate material having a reduced metallic iron outer layer which is coated with an outermost resinous layer for conditioning the copying properties of the carrier.
Claims6
A resin-coated particulate carrier material useful, in conjunction with a toner, for preparting a two-component electrophotographic developer, said carrier material consisting essentially of:
- a core having a spherical body of magnetite surrounded by an outer surface layer comprising metallic iron;
- and
- a resinous coating layer covering said core;
- and
- exhibiting a saturation magnetization in the range of about 90 to about 150 emu/g.
Dependencies are inferred from the claim text.