SPECTRAL SENSITIZERS-BARRIERS FOR CRYSTALLINE OR AMORPHOUS SELENIUM IN MULTI-LAYERED PHOTORECEPTORS
Original Publication Date: 1976-Feb-29
Included in the Prior Art Database: 2004-Mar-26
Xerox Disclosure Journal
A method of changing the xerographic properties of crystalline selenium or amorphous selenium and its alloys by overcoating the selenium or the selenium alloys with a thin film of spectral sensitizing dyestuff, is disclosed. The sensitizing dyestuff may be used in the multi~1ayered active matrix photoreceptors as a barrier layer for the crystalline or amorphous selenium and its selenium alloys. A 0.2 micron film of selenium was vacuum deposited on a conducting support after which the film was dipped into a 0.2 percent in an ingrosin-isopropanol solution and dried. Then the member was coated with a charge transport material. The member showed different xerographic proper- ties than unsensitized selenium. A solution of 0.2 percent ingrosin-isopropanol was dispersed in 6 grams of selenium powders filtered and then washed with isopropanol-water and dried. The pigment was dispersed into a binder matrix.