Photoconductive insulating films comprising fluorenone-substituted oligomers
AssigneeXerox Corporation
InventorsJohn M. Pochan, Sam R. Turner
Life of this patent
Estimating the term…
Abstract
Composite photoconductive insulating films comprising a thin layer of photoconductive materials having substantial spectral response in the visible region of the electromagnetic spectrum and a substantially colorless insulating layer contiguous therewith comprising a minor portion of electronically inert binder in a major portion of an electronically active oligomer of the formula: ##STR1## R' is hydrogen or methyl; R" is alkyl of 1-10 carbon atoms; X and Y are independently selected from the group consisting of NO.sub.2, halogen, cyano and --CF.sub.3 ; Z is oxygen or dicyanomethylene; a and a' can range from 0-3; m is 1-10; and n is in the range of from about 3 to about 25.
Claims6
A composite photoconductive insulating film comprising a layer of photoconductive materials having substantial spectral response in the visible region of the electromagnetic spectrum and a substantially colorless insulating layer contiguous therewith comprising a polymeric solid containing a minor portion of electronically inert polymeric binder and a major portion of electronically active oligomer of the formula:
- ##STR4## R' is hydrogen or methyl;
- R" is alkyl of 1-10 carbon atoms;
- X and Y are independently selected from the group consisting of NO.sub.2, halogen, cyano and --CF.sub.3 ;
- Z is oxygen or dicyanomethylene;
- a and a' can range from 0--4;
- m is 1-10;
- and
- n is in the range of from about 3 to about 25.
An electrophotographic imaging member comprising a conductive substrate and a composite photoconductive insulating film overlying at least a portion of said substrate, said composite comprising a layer of photo conductivematerials having substantial spectral response in the visible region of the electromagnetic spectrum and a substantially colorless insulating layer contiguous therewith comprising a polymeric solid containing a minor portion of electronically inert polymeric binder and a major portion of electronically active oligomer of the formula:
- ##STR5##
- R' is hydrogen or methyl;
- R" is alkyl of 1-10 carbon atoms;
- X and Y are independently selected from the group consisting of NO.sub.2, halogen, cyano and --CF.sub.3 ;
- Z is oxygen or dicyanomethylene;
- a and a' can range from 0-3;
- m is 1-10;
- and
- n is in the range of from about 3 to about 25.
An electrostatographic imaging process comprising:
- a. providing an electrophotographic imaging member comprising a conductive substrate and a composite photoconductive insulating film overlying at least a portion of said substrate, said composite comprising a layer of photoconductive materials having substantial spectral response in the visible region of the electromagnetic spectrum and a substantially colorless insulating layer continguous therewith comprising a polymeric solid containing a minor portion of electronically inert polymeric binder and a major portion of electronically active oligomer of the formula:
- ##STR6## R' is hydrogen or methyl;
- R" is alkyl of 1-10 carbon atoms;
- X and Y are independently selected from the group consisting ofNO.sub.2, halogen, cyano and --CF.sub.3 ;
- Z is oxygen or dicyanomethylene;
- a and a' can range from 0-3;
- m is 1-10;
- and
- n is in the range of from about 3 to about 25.
- b. forming a latent electrostatic image on said imaging member.
Dependencies are inferred from the claim text.