Control of acid/base environment in photoconductive elements

Details Control of acid/base environment in photoconductive elements Control of acid/base environment in photoconductive elements

G - Physics

03

G

G03G 5/04 (2006.01) G03G 5/05 (2006.01)

Patent

CA 2079350

A method of controlling variations in electrical charac- teristics in electrophotographic imaging devices by eliminating the effect of acidic or basic impurities in a photoconductive element. A solution of a weak acid or weak base and a conjugate salt of the weak acid and the weak base is incorporated into a layer of the photoconductive element. In a process for producing the photoconductive element, a substrate is coated with a first dispersion to form a charge generating layer, and then coated with a second dispersion to form a charge transporting layer, wherein there is incorporated in at least one of the first and second dispersions a solution of a weak acid or weak base and the conjugate salt of the weak acid and weak base in an amount effec- tive to reduce variations in the dark development potential (VDDP) and background potential (VBG) characteristics of the imaging devices.

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