Magnetic toner

Details Magnetic toner Magnetic toner

G - Physics

03

G

96/52

G03G 9/08 (2006.01) G03G 9/083 (2006.01) G03G 9/087 (2006.01)

Patent

CA 1334056

A magnetic toner comprising a binder resin, magnetic powder and 0.1 - 10 wt. % (based on resin component) of a low-molecular weight polyalkylene, the binder resin comprising a vinyl-type polymer having 5 to 80 wt. % of a tetrahydrofuran (THF)-insoluble; the magnetic toner having a melt index of 0.2 to 12 g/10 min. (125 °C, 10 kg load); the residual magnetization .sigma.r and the volume-average particle size d of the magnetic toner satisfying the following formula: 3.7 - 0.11d ? .sigma.r ? 6.5 - 0.23d, wherein .sigma.r represents a residual magnetization (emu/g) under an external magnetic field of 1 Köe and d represents a volume-average particle size of 3 to 16 microns.

592039

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