Abstract: A process for obtaining a substantially linear homopolymer and/or copolymeric material from a cyclic trimer such as 1,3,5-trimethyl-1,3,5-tri(N-ethyl-3-carbazyl)cyclobisiloxane alone or in combination with cyclic trimers or tetramers exemplified by the formulae ##EQU1## in the presence of tetramethylammonium silanolate or corresponding alkali metal salt as initiators; the polymeric product, and photoconductive members utilizing such product demonstrate excellent structural and electronic properties for xerographic purposes.
Abstract: A development system comprising a small compact modular developer unit which is retractably engagable with an image bearing surface is provided. The developer module contains within its casing developer feed and doctoring systems to provide a developer applicator surface containing appropriate quantities of developer. The system may use liquid and powder developers and is capable of high speed operation.
Abstract: A polyvinylpyrenal copolymer obtained by condensing the corresponding aromatic aldehyde with a copolymer of vinyl alcohol and having a number average molecular weight of at least 5,000. Also included are photoconductive members utilizing such material as an intrinsic photoconductor or as matrix material, demonstrating excellent structural and electronic properties for xerographic purposes.
Abstract: A photosensitive member for electrophotographic use having a photosensitive binder layer comprising zinc oxide and titanium dioxide photoconductive particles blended in a ratio of about 50:50 to 80:20 by weight and homogeneously dispersed into a film forming insulating resin binder, the particles having an average size of about 0.05 micron to 1.0 micron and the zinc oxide and titanium dioxide particles diffusing in light sensitivity by a factor of more than about 1.2 based on a gray filtered mean daylight source.
Abstract: A method for expediting the breaking in or aging of xerographic photoreceptors comprising a substrate and at least one selenium and arsenic-containing photoconductor layers and to improve low density image differentiation by initially exposing the photoconductor layers to a visible or ultraviolet light flux while at a temperature of not less than about 85.degree.C.