Sulfonamide-doped undercoat for imaging device

Abstract

A photoreceptor undercoat for an electrostatographic imaging device containing a film-forming material, such as, a phenolic resin; a metal oxide, such as, a titanium oxide; and a sulfonamide, including that such sulfonamide facilitates removal of the undercoat from the photoreceptor substrate.

1 . A photoreceptor undercoat comprising a film-forming material, a metal oxide and a sulfonamide, wherein said sulfonamide is N-butyl benzene sulfonamide or N-(2-hydroxylpropyl) benzene sulfonamide. 
     
     
         2 . The undercoat of  claim 1 , wherein said metal oxide comprises titanium oxide. 
     
     
         3 . The undercoat of  claim 1 , wherein said sulfonamide is N-butyl benzene sulfonamide. 
     
     
         4 . The undercoat of  claim 1 , wherein the undercoat is readily removed from a substrate by a buffer comprising an aprotic polar solvent and a weak organic acid as compared to an undercoat without said sulfonamide. 
     
     
         5 . A photoreceptor comprising the undercoat of  claim 1 . 
     
     
         6 . An imaging device component comprising the photoreceptor of  claim 5 . 
     
     
         7 . An imaging device comprising the component of  claim 6 . 
     
     
         8 . A photoreceptor undercoat comprising a phenolic resin, a metal oxide and a sulfonamide, wherein said sulfonamide is N-butyl benzene sulfonamide or N-(2-hydroxylpropyl) benzene sulfonamide. 
     
     
         9 . The undercoat of  claim 8 , wherein the undercoat is readily removed from a substrate by a buffer comprising an aprotic polar solvent and a weak organic acid as compared to an undercoat without said sulfonamide. 
     
     
         10 . The undercoat of  claim 8 , wherein said metal oxide comprises titanium oxide. 
     
     
         11 . The undercoat of  claim 8 , wherein said metal oxide comprises from about 20 wt % to about 80 wt % of said undercoat. 
     
     
         12 . A photoreceptor comprising the undercoat of  claim 8 . 
     
     
         13 . An imaging device component comprising the photoreceptor of  claim 12 . 
     
     
         14 . An imaging device comprising the component of  claim 13 . 
     
     
         15 . The imaging device of  claim 14 , comprising electrical properties, ghosting levels or coating layer adherence to a substrate, comparable to that of an imaging device comprising a photoreceptor comprising an undercoat lacking a sulfonamide. 
     
     
         16 . The imaging device of  claim 15 , wherein said undercoat is readily removed by striping with an aprotic polar buffer comprising a weak acid at atmospheric pressure and/or at a temperature less than about 100° C. as compared to an undercoat without said sulfonamide. 
     
     
         17 . A photoreceptor undercoat comprising a film forming material selected from the group consisting of a casein, a phenolic resin, a polyol, an aminoplast resin, a polyvinyl alcohol, a nitrocellulose, an ethylene-acrylic acid copolymer, a polyamide, a polyurethane, a gelatin, and combinations thereof;
 a titanium oxide; and   a sulfonamide, wherein the sulfonamide is N butyl benzene sulfonamide, or N-(2-hydroxylpropyl) benzene sulfonamide, and wherein the undercoat is readily removed from a substrate by a buffer comprising an aprotic organic polar solvent and a weak organic acid as compared to an undercoat without said sulfonamide.   
     
     
         18 . A photoreceptor comprising the undercoat of  claim 17 . 
     
     
         19 . An imaging device component comprising the photoreceptor of  claim 18 . 
     
     
         20 . An imaging device comprising the component of  claim 19 .