MAGNETIC TONER COMPOSITION WITH GOOD DURABILITY

摘要

PURPOSE: A magnetic toner composition is provided to prevent filming over a latent image, and to improve a cleaning property as well as durability thereof. CONSTITUTION: The toner composition with a good durability is composed of a magnetic toner matrix comprising a binder resin and a magnetic substance; inorganic fine powder added to the surface of the magnetic toner matrix and having a particle size of 0.1 to 4.0 micrometers; and hydrophobic silica added to the surface of the magnetic toner matrix in an amount of 100 to 240m2/g. The amount of the inorganic fine powder is about 0.05 to 0.45 weight percent on the basis of the toner matrix of 100 weight percent.