The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 1976
Filed:
Dec. 04, 1974
John W Weigl, West Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Disclosed is an improved method for the preparation of an electrostatographic photoreceptor comprised of a layer of an organic active transport or insulating material overcoating a layer of a photoconductive material in operative connection with a conductive substrate. The method involves preparing a uniform liquid dispersion of the organic material in an appropriate solvent as a carrier phase having a pigmentary photoconductive material dispersed in it as a dispersed phase. The liquid dispersion is coated onto a conductive substrate and exposed to a direct stream of corona ions or a high intensity DC electric field, without contacting its surface with an electrode, to cause separation of the two phases into a two layered structure with the layer of photoconductive material being deposited between the substrate and the solution of organic material. Drying the structure by removing the solvent for the organic material provides the finished photoreceptor.