Electric potential measuring device and image forming apparatus

Details Electric potential measuring device and image forming apparatus Electric potential measuring device and image forming apparatus

2007-03-28

2009-06-30

Dole, Timothy J (Department: 2831)

Electricity: measuring and testing

Electrostatic field

Using modulation-type electrometer

C324S663000, C324S660000

Reexamination Certificate

active

07554331

ABSTRACT:
An electric potential measuring device has a detection electrode of a conductive material disposed in opposition to an object and a movable structure including a first solid material portion of a dielectric and a second solid material portion of another dielectric or a conductive material. A charge induced on the detection electrode by electric lines of force from the object is modulated by moving the movable structure with a drive mechanism, to measure an electric potential of the object. An image forming apparatus has the electric potential measuring device and an image forming unit for performing a control of an image formation by using the electric potential measuring device.

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