Electroconductive roller
US5834116A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Apr 8, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31605
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electroconductive roller working stably in all environmental conditions without any large-capacity power supply and which is suitable for use in a system of which the power source is controlled for a constant current. The electroconductive roller has a resistance of 1.times.10.sup.3 to 1.times.10.sup.12 .OMEGA. when applied with a voltage of 500 V at a temperature of 25.degree. C. and relative humidity of 50% and has K.sub.HH .ltoreq.K.sub.NN .ltoreq.K.sub.LL, where K is a ratio of roller resistance at an application of 500 V to roller resistance at an application of 2,000 V, K.sub.HH is the ratio K at ambient conditions of 35.degree. C. and 85% relative humidity, K.sub.NN is the ratio K at ambient conditions of 25.degree. C. and 50% relative humidity, and K.sub.LL is the ratio K at ambient conditions of 10.degree. C. and 15% relative humidity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.