Titanyl phthalocyanine imaging member and processes

Abstract

A process for increasing the imaging cyclic stability of titanyl phthalocyanines by adding to said titanyl phthalocyanines a perylene.

What is claimed is: 
     
       1. A process for increasing the imaging cyclic stability of titanyl phthalocyanines by adding to said titanyl phthalocyanines a perylene. 
     
     
       2. A process in accordance with claim 1 wherein the perylene is benzimidazole perylene. 
     
     
       3. A process in accordance with claim 1 wherein the perylene is comprised of a mixture of the cis and trans isomers of benzimidazole perylene. 
     
     
       4. A process in accordance with claim 3 wherein the perylene is bisbenzimidazo[2,1-a:2',1'-a']anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-10,21-dione and bisbenzimidazo[2,1-a: 1',2'-b']anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-6,11-dione trans and cis isomers, respectively. 
     
     
       5. A process in accordance with claim 1 wherein the titanyl phthalocyanine is Type IV titanyl phthalocyanine. 
     
     
       6. A process in accordance with claim 5 wherein from about 50 to about 75 weight percent of the perylene, and from about 50 to about 25 weight percent of the phthalocyanine are selected. 
     
     
       7. A process in accordance with claim 5 wherein about 50 percent of the perylene and about 50 weight percent of the phthalocyanine are selected. 
     
     
       8. A process in accordance with claim 1 wherein said phthalocyanines and perylene are dispersed separately in polyvinyl butyral/n-butyl acetate solution, or a polystyrene-co-4-vinyl pyridine/toluene solution, followed by mixing and milling. 
     
     
       9. A process in accordance wth claim 3 wherein the trans isomer is present in an amount of about 50 percent, and the cis isomer is present in an amount of about 50 percent. 
     
     
       10. A process in accordance with claim 1 wherein from about 50 to about 75 weight percent of perylene and from about 50 to about 25 weight percent of titanyl phthalocyanine are selected.