FILM-FORMING OVERCOAT FOR TONER CHARGE CONTROL AND FLOW
Original Publication Date: 1993-Aug-31
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
A process for preparing and using a film-forming overcoat for toner charge control and flow is disclosed. The process for preparing the film forming overcoat comprises dry milling a commercially available bentonite clay containing an intercalated ammonium ion, for example, dibenyldi( hydro-genated tallow) ammonium ion, with a conventional toner polymer resin or fully formulated toner composition. The milling reduces the size of the intercalated clay particles and uniformly disperses the clay particles on the surface of the resin or toner particles. In one experiment, 0.23 weight percent of an intercalated bentonite clay afforded an approximate monolayer coverage of clay on the toner particle surfaces.