Patent ID: 7799501

Claim:
A method for fabricating a charge generation layer of a photoreceptor comprising: contacting a first binder resin, a pigment and a liquid to form a Newtonian millbase; centrifuging the millbase to remove large particles and to obtain a supernatant; concentrating the supernatant by re-centrifugation; removing some or all of the supernatant of the second centrifugation to form a concentrate; optionally washing the concentrate with a solvent; contacting the concentrate with a let down solution comprising a second binder resin and a solvent to obtain a dispersion having a ratio of pigment to binder of from about 85:15 to about 0.5:99.5 by weight; and forming a charge generation layer on a photoreceptor by applying the dispersion to a previously applied layer of the photoreceptor, wherein the dispersion may be Newtonian, near-Newtonian, or non-Newtonian.