Developer in an image forming device having a binding resin and

Details Developer in an image forming device having a binding resin and Developer in an image forming device having a binding resin and

1990-05-25

1991-05-07

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118653, 118657, 355253, G03G 1509

Patent

active

050140892

ABSTRACT:
A developer for developing electrostatic images, containing a magnetic toner having a binder resin and magnetic powder, the developer containing 17-60% by number of magnetic toner particles of 5 microns or smaller, containing 1-23% by number of magnetic toner particles of 8-12.7 microns, and containing 2.0% by volume or less of magnetic toner particles of 16 microns or larger; wherein the magnetic toner has a volume-average particle size of 4-9 microns, and the magnetic toner particles of 5 microns or smaller have a particle size distribution satisfying the following:

REFERENCES:
patent: 4284701 (1981-08-01), Abbott et al.
patent: 4297970 (1981-11-01), Tajima et al.
patent: 4592987 (1986-06-01), Mitsuhashi et al.
patent: 4737433 (1988-04-01), Rimai et al.

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