Abstract:
A method and apparatus for making a rastered photoconductive layer for electrophotography in order to achieve an improved representation of black areas. The raster is produced by means of ion implantation of substances altering the dark discharge speed.
Abstract:
A one-step process, method and corresponding xerographic photoreceptor obtained thereby, having all or part of the hole generating layer in the trigonal form, the process being effected and the photoreceptor obtained through the use of a glow discharge and ionizable inert gas.
Abstract:
In the fabrication of an electrophotographic recording material of the type composed of selenium, selenium compounds, or alloys with selenium, the method is simplified by initially vapor-depositing the photoconductive recording material onto a carrier at a temperature below the glass transformation temperature, and then heating the recording material to a higher second temperature range between the glass transformation temperature and a temperature just below that at which the electrophotographic properties of the recording material begin to change.
Abstract:
In the fabrication of an electrophotographic recording material composed of a photoconductive layer of selenium, at least one selenium alloy, or at least one selenium compound applied to a conductive substrate, the quality and durability of the bond between the layer and the substrate is improved by initially vapor-depositing a thin layer of the photoconductive substance while the substrate temperature is above the glass transformation temperature of the substance, and then vapor-depositing the remainder of the intended layer at a substantially lower substrate temperature.
Abstract:
The method and apparatus for recording and retrieving information includes a layer of memory material which normally has one structural condition having one detectable characteristic, which is capable of having portions thereof physically changed to another structural condition having another detectable characteristic, which has internal biasing forces toward said other structural condition, and which has internal inhibitions against the action of said biasing forces. The layer of memory material is provided with a catalytic material which is catalytically capable of relatively increasing said biasing forces and decreasing said inhibitions against the action of said biasing forces of the memory material. At at least portions of the layer of memory material, energy, including electrical energy, is applied to the layer for activating the catalytic material at said at least portions of the layer and physically changing the layer at said at least portions from said one detectable structural condition to said other detectable structural condition to record the information in the layer. The structural condition of the at least portions of the layer is detected to retrieve the information in the layer.
Abstract:
In a method for producing a charge carrier plate or foil having a non-conducting selenium layer for xerography, the selenium is deposited onto a carrier plate by evaporation in vacuum with a deposition rate of about 0.5 microns per minute.
Abstract:
An electrophotographic X-ray photographic process wherein an electrically conducting plate coated with a selenium layer containing arsenic is charged electrically in a corona discharge arrangement and is then subjected to image forming X-rays. The invention is particularly characterized in that the selenium layer contains 0.01 to 1 atom % arsenic in selenium and that the charging is negative.
Abstract:
A PROCESS FOR PREPARING AN ELECTROPHOTOGRAPHIC PLATE BY EVAPORATING UNDER VACUUM ONTO A CONDUCTIVE SUBSTRATE HELD AT A TEMPERATURE OF FROM 50*C. TO 80*C. A LAYER CONSISTING ESSENTIALLY OF EQUAL ATOMIC PROPORTIONS OF SELENIUM AND SULFUR.