Licentia Patent-verwaltungs Gmbh

Bernd Reimer

Manfred Lutz

Hans-Hermann Beschoner

An electrophotographic recording material comprises a dual photoconductive layer applied to an electrically conductive substrate. The lower layer disposed on the substrate is made of an amorphous system of selenium and arsenic containing 18 to 37 percent by weight arsenic. The layer thereabove is made of As.sub.2-x Bi.sub.x Se.sub.3 or As.sub.2 Se.sub.3-y Te.sub.y. The recording material is highly sensitive in the visible spectral range as well as in the IR range and can therefore also be used for recordings with solid state laser diode radiation. In cyclic operation, the material exhibits only slight fatigue.

Layered electrophotographic recording material containing selenium,

An electrophotographic recording material, composed of an electrically conductive substrate; a first layer provided on the electrically conductive substrate and composed of an amorphous selenium-tellurium alloy containing form 0.05 to 15 weight % tellurium; a second layer disposed on the first layer and composed of an amorphous selenium-tellurium alloy containing from 15 to 60 weight % tellurium; and a third layer provided on the second layer and composed of an amorphous alloy of selenium and from 0.05 to 5 weight % of one arsenic or tellurium. The electrophotographic recording material is particularly useful in an electrophotographic recording system which includes an infrared radiation means, such as an infrared solid state laser.

Electrophotographic recording material

An electrophotographic recording material including a photoconductor made of a selenium compound applied as a layer on an electrically conductive substrate. The photoconductor includes a compound of arsenic, selenium and tellurium of the formula As.sub.2 Se.sub.3-x Te.sub.x, where 0&lt;x&lt;3.

Electrophotographic recording material comprises arsenic, selenium and

An electrophotographic image carrier structure comprises an electrically conductive substrate, a selenium-containing photoconductive layer including more than 35% by weight arsenic, a polyvinyl carbazole covering layer and an intermediate amorphous selenium layer which is situated between the covering layer and the photoconductive layer and which has an arsenic content of zero to less than 0.5% by weight.

Electrophotographic image carrier structure

An electrophotographic recording material including a dual photoconductive layer containing selenium applied to an electrically conductive substrate. The dual photoconductive layer includes a layer of arsenic selenide applied to the substrate, and a layer of an arsenic-selenium-tellurium compound superposed on the arsenic selenide layer. The arsenic-selenium-tellurium compound has the formula As.sub.2 Se.sub.3-x Te.sub.x, where 0&lt;X&lt;3.

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Warstein, Germany

Bernd Reimer