Browse Prior Art Database

SULFONATED ENCAPSULATED TONER COMPOSITIONS

IP.com Disclosure Number: IPCOM000025237D
Original Publication Date: 1984-Feb-29
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is an improved pressure fixable, single component, encapsulated toner composition containing a suitable core substance, a suitable shell material and colorant and/or pigment particles. The encapsulated toner involved is subjected to a sulfonation reaction, whereby (S03H) groups attach to the surface thereof, thereby resulting in toner particles having a higher conductivity and different field dependency values than corresponding unsulfonated toner compositions. Examples of shell materials that can be selected include polystyrene, polystyrene-co-methylmethacrylate, and polystyrene-co-n-butylmethacrylate, while examples of the core material include polyhexylmethylene sebacates. Various known colorants can be incorporated into the encapsulated toner including carbon black particles, magnetite particles, or mixtures thereof.