A toner composition comprising a binder, colorant, and a charge control
surface additive mixture comprising a mixture of a first titanium dioxide
possessing a first conductivity and a second titanium dioxide possessing
a second conductivity and which second conductivity is dissimilar than
the first conductivity; wherein the mixture of the first titanium dioxide
and the second titanium dioxide is selected in a ratio sufficient to
impart a selected triboelectric charging characteristic to the toner
composition.