an ionographic imaging member containing a conductive layer and a uniform and continuous dielectric imaging layer free of voids , the imaging layer having a dielectric constant of from about 1 . 5 to about 40 and a thickness of at least about 45 micrometers , the thickness divided by the dielectric constant having a value of from about 30 to about 60 micrometers . this member may be used in an ionographic imaging process .