POSITIVELY CHARGED NONMAGNETIC ONE-COMPONENT SYSTEM TONER COMPOSITION WITH EXCELLENT TRANSFER EFFICIENCY

摘要

PURPOSE: A positively charged nonmagnetic one-component system toner composition is provided, to improve transfer efficiency and charging characteristic, thereby inhibiting the deterioration of image quality and the pollution due to inferior fixing. CONSTITUTION: The positively charged nonmagnetic one-component system toner composition comprises 100 parts by weight of a magnetic toner host material which comprises 100 parts by weight of a binder resin comprising 10-90 parts by weight of a cyclic olefin-noncyclic olefin copolymer and 100 parts by weight of a binder resin, 1-20 parts by weight of a coloring agent and 0.2-6 parts by weight of a charge control agent; 0.05-2.0 parts by weight of a fluorine-based organic compound micropowder added to the surface of the magnetic toner host material; and 0.5-2.0 parts by weight of a hydrophobic silica having a specific surface area of 100-240 m2/g.