Automated stationary/portable test system for applying a current signal to a dielectric material being tested
US6469513B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1999 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | May 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/2635
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An automated test system is provided for evaluating characteristics of photoreceptors used in the electrophotographic process. The test system includes a dielectric material support adapted to receive said dielectric material one or more electrodes adapted to apply electrical energy from a source to a two dimensional area adjacent the support for storage by the dielectric material and a sensor for the electrical energy stored in the dielectric material and providing an output representation of the dielectric relaxation of the material in response to the stored energy over the two dimensional area. This test system provides advantages over conventional Electrostatic Charge Decay (ECD) methods by eliminating corona pre-charging and a moving detector when a full-length array is used. Also, this test system utilizes a lower cost current detector in comparison to conventionally used voltage detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.