Electrophotographic toner composition and image formation method

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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430111, G03G 9097

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active

060108142

ABSTRACT:
An electrophotographic toner composition is disclosed, including toner particles containing a coloring agent, a binder resin and at least two kinds of additives, wherein these additives satisfy the relationship, 4<((.di-elect cons..sub.H -.di-elect cons..sub.L)/0.75+log(f))<16, in which f in Hz corresponds to a 1 kHz frequency used for the present dielectric constant measurements, and .di-elect cons..sub.H and .di-elect cons..sub.L are respectively highest and lowest values of dielectric constants obtained at 1 kHz for the additives.

REFERENCES:
patent: 5272040 (1993-12-01), Nakasawa et al.
Japanese Laid-Open Patent Application No. 59-46664, Mar. 16, 1984, Transfer Roll for Use in Copying Machine.
Japanese Laid-Open Patent Application No. 60-238847, Nov. 27, 1985, Electrostatic Image Developing Toner and its Preparation.
Japanese Laid-Open Patent Application No. 61-147261, Jul. 4, 1986, Electrostatic Charge Image Developing Charge Donor.
Patent Abstracts of Japan, 07056380 A, Mar. 3, 1995, Toner.
Patent Abstracts of Japan, 07230179 A, Aug. 29, 1995, Electrophotographic Toner Composition.
JP 52-30437--Abstract.

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