Corona discharge device
US6208499A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1994 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Jul 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A corona discharge device used in an electrophotographic image forming apparatus includes a discharge member such as a saw-toothed discharge member having sharp discharge ends, and a power supply which applies to the discharge member a discharge voltage containing at least an AC voltage component, wherein at least each discharge end portion of the discharge member is made of an electrically conductive material, which contains nickel and chromium, and/or is coated with a material having a high electric resistance. In the case where the saw-toothed discharge member is employed, a distance D between the discharge end and a member to be charged, and a discharge end pitch P are determined to satisfy a relationship of 2.ltoreq.D/P.ltoreq.8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.