Toner for elastrostatic latent image developing and method of ma

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, 430137, G03G 9097

Patent

active

058636927

ABSTRACT:
The present invention relates to a toner comprising toner particles which include at least a colorant, a binder resin, particles of metal oxide having a BET specific surface area of 80.about.300 m.sup.2 /g, and an organic boron compound represented by the structural formal (I) below. ##STR1## (Where Z is a residue forming a ring with an adjacent oxygen atom and carbon atom, X is a cation, and n is an integer of either 1 or 2.) The present invention further relates to a method of manufacturing a toner comprising a process of mixing at least a colorant, a binder resin, particles of metal oxide having a BET specific surface area of 80.about.300 m.sup.2 /g, and an organic boron compound represented by the structural formal (I); a process of melting and kneading the obtained mixture; a process of cooling the kneaded mixture; a process of pulverizing said mixture to produce particles having a predetermined particles size; and a process of classifying said pulverized particles to obtain toner particles which are removed undesired small toner particles.

REFERENCES:
patent: 4767688 (1988-08-01), Hashimoto et al.
patent: 5272034 (1993-12-01), Kawano, et al.
patent: 5538829 (1996-07-01), Ong et al.
patent: 5607803 (1997-03-01), Murofushi et al.

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