Diode bias electrophotographic toning system

Details Diode bias electrophotographic toning system Diode bias electrophotographic toning system

G - Physics

03

G

314/22

G03G 15/24 (2006.01) G03G 15/06 (2006.01)

Patent

CA 1226327

ABSTRACT OF THE DISCLOSURE The present invention discloses a diode bias toning system for use in and with electrophotographic copying machines and the like, and provides a significant improvement over "float- ing" and "hard-wired" toning systems to provide a user with the benefit of self-compensation or self-adjustment sensitometry, while allowing better control of large density percentage images and providing a simple and practical means and method which yield the satisfactory inherent results or advantages of a "hard-wired" system. The employment of a single diode means connected between a development electrode and a high-voltage D.C. power supply, so as to prevent the passage of current between the development elec- trode and the supply means, thereby facilitates the usage of a single high-voltage D.C. power supply to supply both the corona charging and toning biasing functions of an electrophotographic copying machine or system.

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