US4063947A — Photoconductive insulating films comprising fluor…

Claim 1

Independent Claim 116 words

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 2 , halogen, cyano and --CF 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.

Claim 2

Dependent Claim 116 words

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 2 , halogen, cyano and --CF 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.

Claim 3

Dependent Claim 67 words

The composite photoconductive insulating film of Claim 1 wherein the thickness of the layer of photoconductive materials in this composite film can range from about 0.02 to about 5 microns and the thickness of the insulating layer from about 1 to about 200 microns, the ratio of thickness of the layer of photoconductive materials to the insulating layer being maintained within from about 1:2 to about 1:200.

Claim 4

Dependent Claim 75 words

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##

Claim 5

Dependent Claim 75 words

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##

Claim 6

Dependent Claim 60 words

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 2 , halogen, cyano and --CF 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.

Claim 7

Dependent Claim 60 words

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 2 , halogen, cyano and --CF 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.

Claim 8

Dependent Claim 66 words

The electrophotographic imaging member of claim 3 wherein the thickness of the layer of photoconductive materials in this composite film can range from about 0.02 to about 5 microns and the thickness of the insulating layer from about 1 to about 200 microns, the ratio of thickness of the layer of photoconductive materials to the insulating layer being maintained within from about 1:2 to about 1:200.

Claim 9

Dependent Claim 151 words

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 2 , halogen, cyano and --CF 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.

Claim 10

Dependent Claim 151 words

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 2 , halogen, cyano and --CF 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.

Claim 11

Dependent Claim 64 words

The process of claim 5 wherein the thickness of the layer of photoconductive materials in this composite film can range from about 0.02 to about 5 microns and the thickness of the insulating layer from about 1 to about 200 microns, the ratio of thickness of the layer of photoconductive materials to the insulating layer being maintained within from about 1:2 to about 1:200.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1980-12-19	1981-06-20	1981-12-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1984-12-19	1985-06-20	1985-12-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1988-12-19	1989-06-20	1989-12-20	$7700.00	Window Closed / Lapsed

Photoconductive insulating films comprising fluorenone-substituted oligomers

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