Imaging element comprising an electrically-conductive layer containing antimony-doped tin oxide particles

摘要

An imaging element has (a) a layer support, (b) an image-forming layer and (c) an electrically-conductive layer. The conductive layer comprises a dispersion of electronically conductive antimony-doped tin oxide particles in a film-forming binder. The particles have an antimony dopant level of greater than 8 atom percent, an X-ray crystallite size of less than 100 Å and an ave. equiv. circular dia. of less than 15 nm but no less than the X-ray crystallite size. The vol. fraction of the particles is 20-80 vol.% of the electrically conductive layer. Also claimed is a method of providing an imaging element having a support and an image-forming layer with an electrically conductive layer. The method involves (i) milling antimony-doped tin oxide, which has an antimony dopant level of greater than 8 atom percent, an X-ray crystalline size of less than 100 Å and an ave. equiv. circular dia. of greater than 300 nm, to reduce the equiv. circular dia. to less than 15 nm but no less than the X-ray crystallite size, (ii) mixing the milled particles with a film-forming binder, and (iii) coating the resultant compsn. on the element to give a conductive layer contg. 20-80 vol.% of the particles.