High sensitivity visible and infrared photoreceptor
AssigneeXerox Corporation
InventorsDamodar M. Pai, Santokh S. Badesha, John F. Yanus, Michael J. Rice
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Abstract
An electrophotographic imaging member including a charge generating layer containing a dispersed oxytitanium phthalocyanine polymorph and a charge transport layer containing a film forming charge transporting polymer including charge transporting moieties in the backbone of the film forming charge transporting polymer, for example, polysilylenes and polyarylamine derivative. The charge transporting polymers may optionally be used as a binder in the charge generating layer. The imaging member may be employed in an electrophotographic imaging process, particularly in high sensitivity infrared photoreceptors which are compatible with liquid ink development processes.
Claims18
An electrophotographic imaging member comprising:
- a supporting substrate;
- an optional a charge blocking layer;
- an optional adhesive layer;
- a charge generating layer comprising a crystalline titanium phthalocyanine compound dispersed in a binder;
- and a charge transport layer comprising a film forming charge transporting polymer selected from the group consisting of polysilylene and polyarylamines.
An electrophotographic imaging process comprising:
- a) providing an electrophotographic imaging member comprising:
- a supporting substrate;
- a charge generating layer comprising a crystalline titanium phthalocyanine compound represented by formula (I) ##STR38## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are selected from the group hydrogen, alkyl, aryl, arylalkyl, sulfonic acid, alky or aryl sulfonate ester, alky or aryl sulfonamide, dispersed in a binder wherein said binder is a charge transporting polymer;
- and a charge transport layer, said charge transport layer comprising a film forming charge transporting polymer selected from the group consisting of polysilylene and polyarylamines,
- (b) depositing a uniform electrostatic charge on said imaging member;
- (c) exposing said imaging member to activating radiation in image configuration to form an electrostatic latent image on said imaging member;
- (d) developing said electrostatic latent image with electrostatically attractable marking particles to form a toner image;
- (e) transferring said toner image to a receiving member;
- (f) cleaning;
- and
- (g) repeating said depositing, exposing, developing, cleaning and transferring steps.
Dependencies are inferred from the claim text.