Fuji Electric Co., Ltd.

Akio Arai

Kazuya Adachi

Makoto Fujii

Hideki Kina

There is disclosed a photoconductor for use in an electrophotographic apparatus. The photoconductor includes a conductive substrate and a photoconductive layer formed on the conductive substrate. The photoconductive layer includes an As.sub.2 Se.sub.3 alloy containing 36% to 40% by weight of As and doped with 1,000 to 20,000 parts per million of iodine. A method of manufacturing a photoconductor is also disclosed, which includes forming a photoconductive layer by vapor deposition on a conductive substrate and thermally treating the photoconductive layer at a temperature between 100 and 200 degrees Celsius for a period between 30 and 80 minutes. Advantageously, the photoconductor of the present invention is able to provide high quality images at high printing speeds.

Photoconductor for electrophotography and method of manufacturing and

A first selenium-arsenic layer of a photoconductor, deposited on a conductive substrate, has a thickness and arsenic concentration effective to preserve an electrically charged surface potential in darkness and to transport carriers generated on exposure to light. The first layer is between 20 to 70 .mu.m thick. A second amorphous selenium-arsenic alloy layer, formed on the first layer, generates carriers on exposure to light. The surface roughness, Rmax., of the conductive substrate is less than or equal to 0.5 .mu.m. The first layer, or both of the photoconductive layers, are doped with iodine. When both layers contain iodine, the iodine content of the second layer is equal to or less than that of the first layer. The thickness of the second layer is between 5 to 30 .mu.m. The arsenic content of the amorphous selenium-arsenic alloy of the second layer is equal to or greater than that in the first layer. After deposition of the first and second layers, the photoconductor is heat treated at between 100.degree. to 200.degree. for 30 to 80 minutes. In a further embodiment the first layer of the photoconductor has an arsenic content in the range of 10 to 45 wt %. The second layer arsenic content is in the range of 25 to 45 wt %.

Photoconductor for electrophotography

In the particular embodiment of the invention described in the specification, selected portions of the surface of a selenium-arsenic layer of a photosensitive element for use in electrophotography are provided with a superfinish having ridges and grooves in the range of 0.1 to 2.0 .mu.m and a width of 3 .mu.m or less by vibrating a grinding stones on the moving surface at a frequency of 1,000 to 1,500 cpm and an amplitude of 3 mm. The grindstone is held against the surface with a pressure of 0.3 to 0.4 kg/cm.sup.2.

Growing community of inventors

Nagano, Japan

Akio Arai