Conductive roller
US7172543B2 · kind B2 · utility
4Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2003 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Apr 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1614
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A conductive roller including a core metal and a conductive elastic layer disposed on a peripheral surface of the core metal. The conductive roller has an electrostatic capacity not more than 50 pF at 100 Hz and an electric resistance not less than 105Ω nor more than 109Ω at an applied voltage 1000V. An electrostatic capacity C (L) at an alternating low frequency (L) and an electrostatic capacity C (H) at an alternating high frequency (H) satisfy the following relationship:0<(C(L)−C(H))/(log10 Hz(H)−log10 Hz(L))<10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.