Patent ID: 8592115

Claim:
A toner composition comprising: toner particles comprising: a resin; an optional wax; and an optional colorant; and a surface additive at least partially coating toner particle surfaces, the surface additive comprising a mixture of: a first hexamethyldisilazane (HMDS) surface treated silica, a second HMDS surface treated silica, a sol-gel silica that is not surface treated, and a polydimethylsiloxane (PDMS) surface treated silica, wherein: the first HMDS surface treated silica has a different volume average particle diameter than the second HMDS surface treated silica; the first HMDS surface treated silica is present in an amount of from about 0.05 to about 2 wt % based on a total weight of a toner particle; and the second HMDS surface treated silica is present in an amount of from about 0.05 to about 0.25 wt % based on the total weight of the toner particle.