Browse Prior Art Database

Single Layer U-V Photoconductor

IP.com Disclosure Number: IPCOM000119426D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 1 page(s) / 33K

Publishing Venue

IBM

Related People

Adley, JM: AUTHOR [+5]

Abstract

Organic photoconductor composed only of hole transport layers on metallized substrates, such as aluminum (or aluminized mylar), can be charged positively and subsequently photodischarged with short wave-length light (c 340-380mm) using a transport molecule as the source of the electron-hole pair. This effect is strongly enhanced by the polyester content of the polymeric host material in which the hole transport molecule, such as DEH, is embedded. The effect is high sensitivity to U-V (Ultra-Violet) discharge when using DEH in Dow 734* (trademark of Dow Chemical Co.) copolymer (69% ester).

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Single Layer U-V Photoconductor

      Organic photoconductor composed only of hole transport layers
on metallized substrates, such as aluminum (or aluminized mylar), can
be charged positively and subsequently photodischarged with short
wave-length light (c 340-380mm) using a transport molecule as the
source of the electron-hole pair.  This effect is strongly enhanced
by the polyester content of the polymeric host material in which the
hole transport molecule, such as DEH, is embedded.  The effect is
high sensitivity to U-V (Ultra-Violet) discharge when using DEH in
Dow 734* (trademark of Dow Chemical Co.) copolymer (69% ester).

      Since the U-V light generates the carriers directly in the hole
transport layer, there is no need for the barrier or dye layer
coatings presently being used.  This reduces the photoconductor cost
by reducing the cost of materials used as well as the processing
steps and handling, improving manufacturing yields.  Using U-V light
as an imaging source, very small spot sizes can be utilized to create
very high resolution.

      Disclosed anonymously.