Toner, and developer, image forming method, image forming...

Details Toner, and developer, image forming method, image forming... Toner, and developer, image forming method, image forming...

2007-11-27

2007-11-27

Huff, Mark F. (Department: 1756)

Radiation imagery chemistry: process, composition, or product th

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

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

C430S108300, C430S108600, C430S109100

Reexamination Certificate

active

10854703

ABSTRACT:
A toner contains: (A) a binder resin; (B) a colorant; (C) a charge controlling agent; and (D) an additive. (A) contains: a polyester resin containing no tetrahydrofuran-insoluble component; and having components having a molecular weight not greater than 5×102present in an amount of 4% or less by weight, a main peak present in a molecular weight range of from 3×103to 9×103as determined by gel permeation chromatography. (C) contains: a metal salt of salicylic acid or salicylic acid derivative. (D) contains: a hydrophobized silica having a primary particle diameter of from 0.01 to 0.03 μm; and a hydrophobized titanium oxide having a primary particle diameter of from 0.01 to 0.03 μm, a specific surface area of from 60 to 140 m2/g, one or more water-soluble components in an amount of 0.2% or more by weight, a transmittance not less than 35% for light having a wavelength of 300 nm and a transmittance not less than 80% for light having a wavelength of 600 nm.

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