Ferrite powder magnetic toner containing resin and oxide of...

Details Ferrite powder magnetic toner containing resin and oxide of... Ferrite powder magnetic toner containing resin and oxide of...

H - Electricity

01

F

96/52

H01F 1/11 (2006.01) G03G 9/083 (2006.01)

Patent

CA 1129236

ABSTRACT OF THE DISCLOSURE A ferrite powder type magnetic toner for use in electrophotography comprises a one-component ferrite powder type magnetic toner for use in electrophotography comprising toner particles having an average particle diameter of 5 to 40µ, wherein each of said toner particles comprises a resinous component suitable for electrophotographic development and ferrite powder particles therein, the particles of the ferrite powder having an average particle diameter of 0.2 to 0.8µ, the ferrite having a spinel structure comprising stoichiometric components of iron oxide at a ratio of 99.9 to 51 mole % as Fe203 and at least one metal oxide selected from the group consisting of manganese oxide, nickel oxide, cobalt oxide, magnesium oxide, copper oxide, zinc oxide and cadmium oxide at a ratio of 0.1 to 49 mole % as MO wherein M represents Mn, Ni, Co, Mg, Cu, Zn or Cd, and wherein said ferrite powder is incorporated at a ratio of 0.2 to 0.7 wt. parts to 1 wt. part of said resinous component in said toner particles.

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