Browse Prior Art Database

LAYERED ORGANIC PHOTORESPONSIVE DEVICE

IP.com Disclosure Number: IPCOM000024799D
Original Publication Date: 1982-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 69K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is an improved layered organic photoresponsive device useful in highlight color imaging processes. This device is comprised of (1) a supporting substrate, (2) a layer of material capable of injecting holes into a layer on its surface, this layer being comprised of a material selected from the group consisting of carbon dispersed in a polymer and graphite dispersed in a polymer, (3) a hole transport layer in operative contact with the layer of hole injecting material, which transport layer comprises a combination of a highly insulating organic resin having dispersed therein small molecules of an electrically active material, the combi-nation of which is substantially non-absorbing to visible light but allows injection of photogenerated holes from a photogenerating layer in contact with the hole transport layer and electrically induced holes from the layer of injecting material, (4) a red sensitive charge carrier photogenerating layer sensitive to wavelengths ranging from. about 610 millimicrons to about 680 millimicrons, and (5) a top layer of a photoconductive material sensitive only to relatively short wavelengths ranging from about the visible range to about 620 millimicrons, said layer being transparent to light of wavelengths of greater than 620 millimicrons. Color images are formed by subjecting such a device to negative charges followed by positive charges, imagewise exposing the member and developing the resulting surface potentials with a color developer composition comprised to positively charged toner Components and negatively charged toner components and carrier particles.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 75% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

LAYERED ORGANIC PHOTORESPONSIVE Proposed Classification DEVICE US. CI. 430/42 Joseph Y. C. Chu Int. Cl. G03g 13/01

Disclosed is an improved layered organic photoresponsive device useful in highlight color imaging processes. This device is comprised of (1) a supporting substrate, (2) a layer of material capable of injecting holes into a layer on its surface, this layer being comprised of a material selected from the group consisting of carbon dispersed in a polymer and graphite dispersed in a polymer, (3) a hole transport layer in operative contact with the layer of hole injecting material, which transport layer comprises a combination of a highly insulating organic resin having dispersed therein small molecules of an electrically active material, the combi- nation of which is substantially non-absorbing to visible light but allows injection of photogenerated holes from a photogenerating layer in contact with the hole transport layer and electrically induced holes from the layer of injecting material,
(4) a red sensitive charge carrier photogenerating layer sensitive to wavelengths ranging from. about 610 millimicrons to about 680 millimicrons, and (5) a top layer of a photoconductive material sensitive only to relatively short wavelengths ranging from about the visible range to about 620 millimicrons, said layer being transparent to light of wavelengths of greater than 620 millimicrons. Color images are formed by subjecting such a device...