US 7943277 : Sol gel overcoats incorporating zinc antimonate nanoparticles

acid scavengers


Molaire, Michel F. (Rochester, NY, US)
Ferrar, Wayne T. (Fairport, NY, US)
Miskinis, Edward T. (Rochester, NY, US)
Frauens, Michael W. (Webster, NY, US)
Gruenbaum, William T. (Rochester, NY, US) 

Eastman Kodak Company (Rochester, NY, US) 


The present invention is directed to an electrophotographic element that comprises: an electrically conducting layer, a charge generating layer overlying the electrically conducting layer, and a charge transport layer overlying the electrically conducting layer. The charge transport layer, which can be an overcoat overlying the charge generating layer, includes the reaction product in an aqueous medium of a mixture comprising a silsesquioxane polymer and a amine-free surface treated zinc antimonate and an acid scavenger.