Gas separation: apparatus – Magnetic separating means
Patent
1974-09-12
1977-01-04
Klein, David
Gas separation: apparatus
Magnetic separating means
252501, G03G 504
Patent
active
040010147
ABSTRACT:
An electrophotographic photosensitive plate having, in order from the bottom up, an electrically conductive substrate, a photosensitizing layer composed of vitreous selenium and tellurium having a thickness of 0.1 to 3 microns, and a top organic layer including polyvinyl carbazole or a derivative thereof, the photosensitizing layer being composed of a first layer of 0.05 to 2 microns in thickness having 60 to 90 weight % of selenium and 40 to 10 weight % of tellurium and a second layer of 0.05 to 1 micron in thickness having a higher concentration of selenium than that of the first layer, and the second layer being positioned between the first layer and the top organic layer. This invention also provides a process of producing a latent electrostatic image on the plate by providing a negative electrostatic charge thereon and exposing the plate to a light image of visible light having a wavelength in the range of 4000 to 8000A. Advantages of this electrophotographic plate are that it has high sensitivity to the visible light along with low residual potential.
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Ando Eiji
Hayashi Yoshiki
Hightower Judson R.
Klein David
Matsushita Electric - Industrial Co., Ltd.
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