JP2007003512A5 - - Google Patents

Claims (10)

A potential measuring device having a sensing electrode charge in accordance with the potential of the detection object is induced, and change means for changing the generation amount of charge the induced and the sensing electrode on the support member An electric potential measuring apparatus, wherein an unevenness is formed on a surface of the surface facing the object to be detected, and the detection electrode is not present in the recess. The recess of the sensing electrode, the potential measuring apparatus according to claim 1 further comprising either or both of the at least one through-hole and the groove. The convex part of the said detection electrode is comprised so that the area of the surface side which opposes to-be-detected object may become larger than the area of the side which opposes the said supporting member. Potential measurement device. The potential measuring apparatus according to claim 1, wherein the changing unit changes the amount of generated charge by changing a distance between the object to be detected and the detection electrode. The change means changes the distance between the detection object and the detection electrode or the area of the detection electrode visible from the detection object by changing the inclination of the detection electrode with respect to the detection object. The potential measuring device according to item. The potential measuring apparatus according to claim 1, wherein the changing unit changes a generation amount of the charge by changing a dielectric constant between an object to be detected and a detection electrode. Wherein said change means, insertion of Oite shielding plate between the sensing electrode and the detection object, by a drawer, which alter the area of the detection electrode seen from the detection object, changing the generation amount of the charge Item 7. The potential measuring device according to any one of Items 1 to 6. A potential measuring device having a sensing electrode charge in accordance with the potential of the detection object is induced, and change means for changing the generation amount of charge the induced and,
The sensing electrode is provided through the insulation body on a support, and only more free separation arranged electrical conductor portion,
The potential measuring device, wherein the plurality of conductor portions are electrically connected . A potential measuring device having a sensing electrode charge in accordance with the potential of the detection object is induced, and change means for changing the generation amount of charge the induced and,
The sensing electrode is provided through the insulation body on a support, and the potential measuring apparatus characterized by having a conductor having a flat pattern for exposing the insulating surface made of the insulating material in a plurality of regions. A potential measuring device according to any one of claims 1 to 9, and an image forming means, and control means controls the image formation by the image forming means by using an output signal obtained from said potential measuring device Image forming apparatus.