| http://www.w3.org/ns/prov#value | - The charge generating layer is formed to have a layer thickness of at most 4 .mu.m, preferably at most 2 .mu.m.The charge generating material may be exemplified by inorganic materials, for example, selenium, selenium alloys such as selenium-tellurium and selenium-arsenic, cadmium selenide, zinc oxide and amorphous silicone as well as the organic materialswhich may be used for the function-divided
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