High stability toner especially for high-speed two-component development comprises resin binder, mixed metal oxide black pigment and quaternary ammonium salt charge generator

摘要

A toner comprises a resin binder, a black pigment which is a mixed oxide of 2 or more metals and a quaternary ammonium salt as charge generator. A toner comprises: (A) a resin binder; (B) a black pigment which is a mixed oxide of 2 or more metals; and (C) a quaternary ammonium salt as charge generator.