Patent ID: 7252915
Filing Date: 2007-08-07
Classification: G03G

Abstract:
1. A magnetic mono-component toner composition, which comprises: a) 100 parts by weight of magnetic toner particle comprising: b) 0.5 to 1.5 parts by weight of a hydrophobic treated silica having a specific surface area of 20 to 80 m c) 0.5 to 2.5 parts by weight of a hydrophobic treated silica having a specific surface area of 130 to 230 m d) 0.3 to 1.5 parts by weight of a metal oxide fine powder based on the magnetic toner particle, wherein d) the metal oxide fine powder is one or more mixtures selected from a group consisting of titanium dioxide, zinc oxide, magnesium oxide, cerium oxide, iron oxide, copper oxide, and tin oxide.