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SPECTRAL SENSITIZERS-BARRIERS FOR CRYSTALLINE OR AMORPHOUS SELENIUM IN MULTI-LAYERED PHOTORECEPTORS

IP.com Disclosure Number: IPCOM000022830D
Original Publication Date: 1976-Feb-29
Included in the Prior Art Database: 2004-Mar-26
Document File: 2 page(s) / 212K

Publishing Venue

Xerox Disclosure Journal

Abstract

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.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

SPECTRAL SENSITIZERS~-BARRIERS Proposed Classification

                                 U.S. Cl, 96/1,6
mt. Cl. G03g 5/09
PHOTORECEPTORS
L. A. Teuscher

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.

The member comprising sensitized selenium pigment had
significantly different xerographic properties as compared
to the xerographic properties of members containing
unsensitized selenium.

Volume 1 Number 2 February 1976 11

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12 XEROX DISCLOSURE JOURNAL

Volume 1 NumiDer 2 February 1976

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