Surface potentiometer for use in an electrostatic copier
US4261660A · kind A · utility
12Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1978 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Oct 31, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A surface potentiometer has a conductive shield housing provided in proximity to a body to be measured, a cage-shaped chopper rotatable within the housing, and an electrode disposed further inwardly of the chopper. The chopper is rotated to induce in the electrode a voltage corresponding to the potential of the body to be measured, thereby measuring the surface potential of the body to be measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.