| abstract |
An electrostatographic developer mixture comprising finely divided toner particles electrostatically clinging to the surface of large carrier particles, each of the carrier particles comprising a core material surrounded by a matrix material containing solid, finely divided particles having an average diameter less than about 10 microns wherein the solid, finely divided particles comprise at least one compound selected from the group consisting of phthalic acid, isophthalic acid, terephthalic acid, the metal and ammonium salts thereof. |