Patent ID: 8673530
Filing Date: 2014-03-18
Classification: G03G

Abstract:
1. A toner composition comprising a first additive package comprising at least two surface-treated silicas, wherein a first of said at least two surface-treated silicas is a sol-gel silica of primary particle size of from about 80 to about 200 nm, consisting of an octyl triethoxy silane on the surface thereof, and a second of said at least two surface-treated silicas is a fumed silica; and a surface-treated titania, wherein when compared to a toner comprising a second additive package comprising a hexamethyl disilazane (HMDS) surface-treated sol-gel silica, wherein said first and said second additive packages differ only in the octyl triethoxy silane surface-treated sol-gel silica replacing the HMDS surface-treated sol-gel silica, said toner comprising said first additive package has increased charging in the A-zone, increased A-zone second transfer efficiency or both relative to said toner comprising a second additive package.