Toner and image forming method using the toner

Details Toner and image forming method using the toner Toner and image forming method using the toner

2007-02-01

2010-11-23

RoDee, Christopher (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

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

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

C430S108700, C430S123510

Reexamination Certificate

active

07838193

ABSTRACT:
A toner including toner particles including a binder resin, a colorant and a release agent, and an external additive including a first particulate inorganic material having a formula of MgxSiyOx+2ywhere each of x and y is an integer, and a number average secondary particle diameter of from 0.02 μm to 2 μm, wherein the first atomic ratio (Mg/Si)s in a surface portion of the first particulate inorganic material is not greater than (preferably less than) the second atomic ratio (Mg/Si)e in the entire first particulate inorganic material. Alternatively, a toner including toner particles including a binder resin and a colorant, and an external additive which includes a particulate inorganic material having a formula of MgxSiyOx+2ywhere each of x and y is an integer and which has a surface treated with a fatty acid.

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