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 JP15533276ApriorityCriticalpatent/JPS5378844A/en
Publication of JPS5378844ApublicationCriticalpatent/JPS5378844A/en
PURPOSE: To increase effective number of copied papers obtained from the same static latent image by effecting deelectrification by alternate corona charge on the surface of photosensitive body without performing deelectrification of the photosensitive body by light irradiation.