Process for producing an electrophotographic material in which a pinhole-filling dispersion is employed

Claim 1

In a process for producing an electrophotographic light-sensitive material comprising coating a paper support with an electroconductive layer and a photoconductive layer on the opposite side of said electroconductive layer, and directly coating on said paper support at least one film-forming resin layer, wherein said film-forming resin layer can be said electroconductive layer, the improvement which comprises bringing at least one film-forming resin layer directly coated on the support into contact with a pinhole-filling dispersion comprising a volatile liquid and a finely dispersed substance selected from the group consisting of a white or black pigment, a plastic particle or a pigment coated with a plastic therein, said liquid easily penetrating into the interior of the paper support through pinholes in said film forming resin layer and carrying said finely dispersed substance into said pinholes, whereby said finely dispersed substance fills and seals said pinholes which permit the penetration of said liquid and which exist in the surface of said film-forming resin layer which is itself capable of substantially completely preventing penetration of said liquid into said paper support and wherein the rate of penetration of said pinhole-filling dispersion is from about 2 × 10 -4 mm 3 to about 60 × 10 -4 mm 3 /second.