US 4,389,610 A · Electrostatic probe device and method of manufacturing such a device

Abstract

In electrophotography or electroradiography charge images are formed which are customarily made visible by means of toners. The invention provides an electrostatic probe device for the electric scanning of charge images. The device, therefore, is particularly suitable for use in conjunction with digital image processing and storage. The device in accordance with the invention comprises a large number of electrode tracks which are provided on a flat substrate and on which there is provided an insulating layer on which a conductive layer is provided. The latter layer comprises cut-outs at the area of the electrostatic probe electrode heads. This device is suitable for the simultaneous measurement of the charge distribution at some hundreds of measuring locations.

Claims15

Dependent claims

An electrostatic probe device for measuring charge distribution on an electrically charged surface comprising

an electrically insulating substrate,
a plurality of adjacent, mutually insulated, and mutually extending electrostatic probe electrodes on said substrate, each of said probe electrodes including a probe electrode head, an electrode track, and a connection electrode surface,
a coherent insulating layer provided over at least said probe electrode head of said probe electrodes, and
an electrically conductive cover layer provided on said insulating layer, said cover layer having an opening over said probe electrode head of each of said probe electrodes.

1 more element

Dependencies are inferred from the claim text.

Electrostatic probe device and method of manufacturing such a device

Life of this patent

Electrostatic probe device and method of manufacturing such a device

Life of this patent

Abstract

Claims15