Polymer electrodeposition process

An electrodeposition process for forming a free standing belt shaped film comprising providing at least one sleeve electrode, forming a thin electrically conductive layer on the interior surface of said sleeve electrode, submerging said sleeve electrode and thin electrically conductive layer into a bath with said sleeve electrode being coaxially spaced apart from and surrounding at least one other electrode in said bath, said bath comprising a dispersion of electrically charged, thermoplastic film forming polymer particles in an organic liquid dispersion medium substantially free of water, said polymer particles having a weight average molecular weight of at least about 35,000 and being substantially insoluble in said organic dispersion liquid medium at electrodeposition temperatures and sufficiently soluble in said organic dispersion liquid medium at elevated drying temperatures to coalesce and form a viscous coating, applying an electric field across the electrodes until a thick, substantially uniform deposit of polymer particles forms on said thin electrically conductive layer on said interior surface of said sleeve electrode, removing said sleeve electrode bearing said electrically conductive layer and said deposit of polymer particles and residual liquid dispersion medium clinging to said deposit of polymer particles from said bath, heating said deposit to initially solubilize said polymer particles in said residual organic liquid dispersion medium to form a coalesced, continuous viscous coating of the solubilized polymer particles, continuing said heating to evaporate said residual organic liquid dispersion medium and form a continuous, solidified, dry, belt shaped polymer film on said electrically conductive layer, and removing said electrically conductive layer and continuous, solidified, dry, belt shaped polymer film from said interior surface of said sleeve electrode.

An electrodeposition process for forming a free standing belt shaped film comprising providing at least one sleeve electrode coaxially spaced apart from and surrounding at least one other electrode in a bath comprising a dispersion of electrically charged, thermoplastic film forming polymer particles in an organic liquid dispersion medium substantially free of water, said polymer particles having a weight average molecular weight of at least about 35,000 and being substantially insoluble in said organic dispersion liquid medium at electrodeposition temperatures and sufficiently soluble in said organic dispersion liquid medium at elevated drying temperatures to coalesce and form a viscous coating, applying an electric field across the electrodes until a thick, substantially uniform deposit of polymer particles forms on the interior surface of said sleeve electrode, removing said sleeve electrode bearing said deposit of polymer particles and residual liquid dispersion medium clinging to said deposit of polymer particles from said bath, heating said deposit to initially solubilize said polymer particles in said residual organic liquid dispersion medium to form a coalesced, continuous viscous coating of the solublized polymer particles, continuing said heating to evaporate said residual organic liquid dispersion medium and form a continuous, solidified, dry, belt shaped polymer film, removing said continuous, solidified, dry, belt shaped polymer film from said interior surface of said sleeve electrode, applying an electrically conductive layer on said film, applying a charge generation layer, and applying a charge transport layer.