Electrophotographic toner and process for the preparation thereo

Details Electrophotographic toner and process for the preparation thereo Electrophotographic toner and process for the preparation thereo

1998-06-04

2000-01-25

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

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

430111, 430137, G03G 9087

Patent

active

060176709

ABSTRACT:
An electrophotographic toner having a volume-average particle diameter of from 3 to 15 .mu.m. The toner comprises a spherical particulate material having an average circularity of not less than 0.97 having a colorant encapsulated in a binder resin. The binder resin is a styrene-acrylic resin having an acid value of from 30 to 150 which is at least partly crosslinked. The tetrahydrofuran insoluble content in the whole of the binder resin including crosslinkd portions in the particulate material is from 0.5 to 70% by weight.

REFERENCES:
patent: 5180649 (1993-01-01), Kukimoto et al.
patent: 5338638 (1994-08-01), Tsichiya et al.
patent: 5489498 (1996-02-01), Ohno et al.
patent: 5500318 (1996-03-01), Tanikawa et al.

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