Electrophotographic photoconductive plate and the method of maki

Electrical resistors – Resistance value responsive to a condition – Photoconductive

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96 15R, 2523016R, H01L 3108

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active

040538630

ABSTRACT:
In an electrophotographic camera, a photon image to be recorded is focused through an optically transparent substrate and transparent electrode onto the back surface of a photoconductive layer. The charge-retentive surface of an electrographic recording paper is disposed adjacent the photoconductive layer and the conductive backing of the paper is connected to an electrode for impressing a charge transfer potential across the photoconductor layer and the charge-retentive layer of the paper. When the potential is impressed across the photoconductor, increased conduction caused in the photoconductor by the photon image to be recorded are establish a charge transfer to the charge-retentive surface of the recording paper to form a charge image of the object to be recorded. The charge image is subsequently developed by applying charged toner particles to the image for developing same. The photoconductive layer comprises a substantially continuous layer of electrically interconnected crystals of active photoconductive material coated and bound together with a lead sealing glass interstitially disposed of the interconnected crystals. The resultant photoconductive layer has improved strength and resistance to abrasion while producing acceptable photographic images. The photoconductive layer is produced by heating a stratum including particles of lead sealing glass together with particles of photoconductive material in the presence of a molten solvent and proportions of one or more activators. The sealing glass comprises between about 9% and about 31% by weight of the matrix.

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