Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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Filing date
Publication date
Application filed by Ricoh Co LtdfiledCriticalRicoh Co Ltd
Priority to JP563277ApriorityCriticalpatent/JPS5390935A/en
Publication of JPS5390935ApublicationCriticalpatent/JPS5390935A/en
PURPOSE: To increase the number of effective copies obtainable from the same latent image, by repeatedly charging the surface of a photoconductive layer of photosensitive body by corona discharge of same polarity two or more times prior to light image exposure.