Polymerized vinyl carbazoles sensitized by nitro-substituted 9-dicyanomethylene fluorenes
AssigneeXerox Corporation
InventorsHelmut Hoegl, Giacomo Barchietto
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Abstract
An electrophotographic plate is described comprising a charge-transfer complex of an aromatic resin and certain Lewis acids; typically 9-dicyanomethylene-2,4,7-trinitro-fluorene. Also described are methods of preparing and using this plate.
Claims22
A photoconductive composition comprising up to about 0.4 moles of a Lewis acid per monomeric unit of a polymerized vinyl carbazole compound, said Lewis acid having the general formula:
- ##STR5## wherein each of X and Y is a positive integer from 0-2.
A process for forming an electrostatic latent charge pattern comprising uniformly electrostatically charging a photoconductive layer comprising a charge-transfer complex of up to about 0.4 moles of a Lewis acid per monomeric unit of a polymerized vinyl carbazole compound and exposing said layer to a pattern of activating electromagnetic radiation, said Lewis acid having the general formula:
- ##STR6## wherein each of X and Y is a positive integer from 0-2.
An electrostatic imaging process which comprises providing a photoconductive layer comprising a charge-transfer complex of up to about 0.4 moles of a Lewis acid per monomeric unit of a polymerized vinyl carbazole compound, forming an electrostatic latent image on said layer and developing said latent image with electroscopic marking material, said Lewis acid having the general formula:
- ##STR7## wherein each of X and Y is a positive integer from 0-2.
A photoelectrostatic member comprising a conductive base support coated with a photoconductive film comprising a polymerized vinyl carbazole compound and a sensitizer having the formula ##STR8## wherein each of x and y is a positive integer from 0-2.
A method of making a reproduction comprising the steps of applying a sensitizing charge to a photoelectric member having a conductive base support and a photoconductive medium of a polymerized vinyl carbazole compound sensitized with a compound having the formula ##STR9## wherein each of X and Y is a positive integer from 0-2 exposing said charged member to a pattern of light and shadow comprising electromagnetic radiation in the visible range to produce a latent image thereon;
- and
- applying electroscopic powder to produce a material image corresponding to said pattern of light and shadow.
Dependencies are inferred from the claim text.