Electrophotographic liquid developing system

Details Electrophotographic liquid developing system Electrophotographic liquid developing system

G - Physics

03

G

32/12.11

G03G 15/10 (2006.01) G03G 15/06 (2006.01)

Patent

CA 1088738

Abstract of the Invention ELECTROPHOTOGRAPHIC LIQUID DEVELOPING SYSTEM Abstract of the Disclosure An electrophotographic liquid developing system for overcoming the effect of photoconductor background potential in which during the passage of the image area through the developer unit a constant current source supplies a small current to the development electrode to raise the electrode to a potential of the same polarity as and of a magnitude greater by predetermined amount than that of the average background potential the image area. In a preferred embodiment the constant current source is provided by a small plate mounted in and insulated from the transfer corona housing and having such dimensions as to provide the required current. Preferably, the output of the constant current source is controlled in response to a measurement of the conductivity of the developer.

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