Abstract:
A recording and readout apparatus for X-rays has a storage layer whose charge distribution which is generated and stored by means of x-radiation during the recording is read out light-optically in point-by-point fashion. An image data storage of the readout may be provided along with a display apparatus for image observation.
Abstract:
Electroconductive base sheet for electrostatic according which comprises an electroconductive layer containing both a metal oxide semiconductor of this invention and at least one substance selected from the group consisting of a reducing saccharide, a derivative thereof, ascorbic acid, an optical isomer of ascorbic acid and a reducing ascorbic acid derivative of this invention. The electroconductive base sheet provides a superior electroconductivity.
Abstract:
The invention disclosed relates to a photosensitive member having excellent photosensitivity characteristics in the visible light region as well as in the near infrared region. According to first embodiment of the invention, the photosensitive member comprises an electrically conductive substrate, an amorphous silicon-germanium photoconductive layer having a thickness of about 0.1 to 3 microns, and an amorphous silicon photoconductive layer of 5 to 30 micron thick formed on the amorphous silicon-germanium photoconductive layer. Second embodiment of the photosensitive member comprises a substrate, an amorphous silicon semiconductor layer of 5 to 100 micron thick and an amorphous silicon-germanium photoconductive layer formed on the amorphous silicon semiconductor layer.
Abstract:
The recording material comprises a metallic base, for example, of aluminum, a twenty to sixty .mu.m thick layer of selenium with a content of tellurium ranging between 5 and 30 percent by wt. and a layer of selenium having a thickness ranging between 0.5 and 3 .mu.m arranged thereon containing 0.5 to 5 percent by wt. of arsenic. Instead of the layer of selenium containing arsenic, there may also be provided a layer of arsenic-triselenside. Preferably, the content of tellurium in the selenium layer containing tellurium, increases either step-by-step or continuously from the metallic base up to the layer of selenium containing arsenic. The electrophotographic recording material has a sensitivity within the region from 600 to 850 nanometers, the surface is stabilized against corona effects, and the material has a good residual potential behavior.
Abstract:
A photoconductive member comprises a support for a photoconductive member and an amorphous layer having a layer constitution comprising a first layer region comprising an amorphous material containing silicon atoms and germanium atoms and a second layer region comprising an amorphous material containing silicon atoms and exhibiting photoconductivity, said first and second layer regions being provided successively from the side of said support.
Abstract:
Glow discharge method and apparatus useful for coating electrophotographic photoreceptors in the form of drums and plates are described. Improved photoreceptors using amorphous silicon which accepts a high surface voltage in the dark and discharges to a low residual voltage under illumination are also described.
Abstract:
This invention is a process for forming film of amorphous material on a support. The amorphous material comprises at least either of hydrogen atom or halogen atom and at least either of silicon atom or germanium atom as a matrix. The film is formed by utilizing a discharge of direct current or low frequency alternating current and, particularly, is radiated with an electromagnetic wave which sensitizes the said amorphous material.
Abstract:
There is disclosed an electrophotographic lithographic printing plate having a precoat layer having improved water resistance and organic solvent resistance and an improved photoconductive layer which comprises:(1) a paper base;(2) a precoat layer on one side of said paper base, which precoat layer contains at least(a) 10% by weight or less (based on total solids) of a film-forming water-soluble polymer,(b) about 30 to about 80% by weight (based on total solids content) of a water-dispersible resin, and(c) an inorganic pigment;(3) a photoconductive layer provided on said precoat layer, which photoconductive layer contains(a) photoconductive zinc oxide, and(b) at least 2 binder resins different in acid value from each other by 5 or more, said mixed binder resins in the photoconductive layer having an average acid value of 5 to 30; and(4) a conductive back-coat layer on the other side of said paper base, which back-coat contains at least(a) 10% by weight or less (based on total solids) of a film-forming water-soluble polymer,(b) a water-dispersible resin, and(c) a conductive agent.
Abstract:
A photoconductive element comprising elemental selenium dispersed in an insulating polymer is prepared by reducing an inorganic selenium compound in the presence of the insulating polymer. The invention also provide a process for preparing an electrophotosensitive material having a photoconductive layer in which reduction of the inorganic selenium compound is performed in a layer coated on a conductive support.
Abstract:
An electrophotographic image-forming member comprises: an electrophotographic supporting substrate; a photoconductive layer constituted of an amorphous material which contains silicon atoms as matrix and at least one of hydrogen atoms and halogen atoms; and a resin layer formed by use of a ladder type of silicon resin, between said supporting substrate and photo-conductive layer.