Magnetic toner for developing electrostatic image

Details Magnetic toner for developing electrostatic image Magnetic toner for developing electrostatic image

1990-05-29

1992-09-01

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430109, 430111, G03G 9083, G03G 9107, G03G 900

Patent

active

051438100

ABSTRACT:
A magnetic toner for developing an electrostatic image comprises a binder resin and a spherical magnetic powder. The spherical magnetic powder comprises spherical magnetic particles. The spherical magnetic particle has a surface layer having composition different from its core. The surface layer is formed of a ferrite having an oxide of a divalent metal other than iron in an amount of from 1.5 to 13 mol % in terms of divalent metal ion.

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patent: 4282302 (1981-08-01), Makino et al.
patent: 4386577 (1983-06-01), Hosono et al.
patent: 4857432 (1989-08-01), Tanikawa et al.
patent: 4935325 (1990-06-01), Kuribayashi et al.
patent: 4939060 (1990-07-01), Tomiyama et al.

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