Browse Prior Art Database

METHOD FOR PREPARATION OF A PHOTORECEPTOR

IP.com Disclosure Number: IPCOM000023551D
Original Publication Date: 1978-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 260K

Publishing Venue

Xerox Disclosure Journal

Abstract

A photoreceptor is prepared by in-itia1ly depositing on a con-ductive substrate a layer of a solution or a dispersion of bis(diphenylmethyldiselenide) (DPMDS) and an electrically insulating film-forming polymeric resin binder material. The layer is dried until it is substantially free of any solvent and then subjected to thermal energy which is capable of effecting decomposition of the DPMDS to elemental selenium. Heating an approximately 6 micron thick layer for about 5 minutes at about 150°C is sufficient to cause the decompo-sition of the DPMDS. The DPMDS undergoes carbon-selenium bond scission substantially completely so that substantially all of the selenium atoms are deposited in the binder matrix as elemental selenium. The decomposition products formed as a result of the extrusion of selenium from the DPMDS do not react with each other to reverse the reaction or form other organoselenium compounds so the photoconductive layer is very stable.

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XEROX DISCLOSURE JOURNAL

METHOD FOR PREPARATION OF A Proposed Classification
PHOTORECEPTOR U.S. Cl. 96/1.5
Joseph Y. C. Chu mt. Cl. G03g 5/04
Wolfgang H.H. Gunther
Jerry W. Lewicki

A photoreceptor is prepared by in~itia1ly depositing on a con-
ductive substrate a layer of a solution or a dispersion of
bis(diphenylmethyldiselenide) (DPMDS) and an electrically
insulating film-forming polymeric resin binder material. The
layer is dried until it is substantially free of any solvent
and then subjected to thermal energy which is capable of
effecting decomposition of the DPMDS to elemental selenium.
Heating an approximately 6 micron thick layer for about 5
minutes at about 150°C is sufficient to cause the decompo-
sition of the DPMDS. The DPMDS undergoes carbon-selenium bond
scission substantially completely so that substantially all of
the selenium atoms are deposited in the binder matrix as
elemental selenium. The decomposition products formed as a
result of the extrusion of selenium from the DPMDS do not
react with each other to reverse the reaction or form other
organoselenium compounds so the photoconductive layer is very
stable.

The electrically insulating film-forming organic binder
material may be electronically inert or electronically active,
i.e., capable of transporting at least one species of charge
carrier. The decomposition reaction may be carried out
uniformly or selectively. In the latter embodiment, it is
possible to prepare a photoconductive pattern in the form of a
screen or s...