energy radiated from the image wise patterning device i e a laser and the dampening fluid the infrared absorbing filler may be carbon black a metal oxide such as iron oxide feo carbon nanotubes graphene graphite or carbon fibers a filler particle in accordance with embodiments of this disclosure includes passivated carbon black particles it is important that filler particles do not negatively impact surface interactions when used in for example the re imageable surface of an imaging member during printing operations where surface contamination may result in print defects or system or operation failure adhesion sites or sites of high surface energy may be formed on a filler particle surface that cause such interactions the impact of these interactions may be minimized or reduced by functionalizing the particles with passivating molecules further functionalized particles may allow for fine dispersion of the filler particles in a polymer matrix which enhance physical interactions such as optical absorption fine dispersion also enables improved compatibility in a polymer matrix which enhances mechanical properties filler particles in accordance with embodiments may include at least one of functionalized carbon black particles carbon nanotubes graphite particles and carbon fibers that are surface functionalized by way of covalent attachment of poly pentafluorostyrene carbon black is known and is known to be useful as a filler material in many uses including in imaging member surfaces carbon black is generally produced by the incomplete combustion of hydrocarbons or by charring of other organic materials carbon black is commercially available from one of several different sources polymerized pentafluorostyrene may be used as a permanently attached passivating layer on carbon black particles that results in robust.