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 JP15227876ApriorityCriticalpatent/JPS5376033A/en
Publication of JPS5376033ApublicationCriticalpatent/JPS5376033A/en
PURPOSE: To increase an effective number of copy sheet obtained from the same electrostatic latent image by carging a photo-sensitive body to a predetermined high potential which exceeds the upper limit value of the effective surface potential region in order to form an electrostatic latent image.