The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1977
Filed:
Dec. 23, 1975
Itaru Fujimura, Zushi, JA;
Katutoshi Endo, Yokohama, JA;
Ricoh Company, Ltd., , JA;
Abstract
The developing process is for use in an electrophotographic copying machine of the wet developing type in which a developing electrode arrangement is maintained in intimately opposing relationship with a cyclically moving endless photosensitive surface carrying an electrostatic latent image on a circumferential surface portion thereof. The remaining portion of the endless surface is charged at a certain potential having a polarity opposite to that of the latent image. A potential on the electrode arrangement is maintained below a predetermined value during the time the latent image carrying surface portion is passing thereby, to achieve correct development, whereas it is charged by a bias potential, lower than the potential previously applied, while the remaining surface portion passes thereby during the remaining time for one cycle of the endless surface. Thereby an accumulation of toner on the electrode arrangement is prevented and hence fogging of the developed image caused thereby is also prevented.