Patent ID: 6136442
Filing Date: 2000-10-24
Classification: G03G,Y10T

Abstract:
An organic top-surface coating for a particulate transport electrode grid, comprising:a first organic coating layer located over said particulate transport electrode grid, said first organic coating layer comprising:a polymer selected from the group consisting of polycarbonate, polyvinylcarbazole, or cellulose acetate butyrate;a charge transport agent selected from the group consisting of m-TBD, p-TBD, TM-TBD, or dihydroxy m-TBD;an oxidant selected from the group consisting of (di-tert-butylphenyl) iodonium hexafluoroarsenate, or cation salts of TM-together with silver trifluoroacetate; anda second organic coating layer, in physical contact with and overlaying said first organic coating layer, said second organic coating layer comprising:a polymer selected from the group consisting of polycarbonate, polyvinylcarbazole, or cellulose acetate butyrate; anda charge transport agent selected from the group consisting of m-TBD, p-TBD, TM-TBD, or dihydroxy m-TBD;wherein said top surface coating has a time constant, a dielectric constant, and a resistivity, said time constant, determined by the product of the dielectric constant and the resistivity, being between 1 microsecond and 100 microseconds.