Current regulated voltage limited high voltage power supply for corona charger
US6831818B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2001 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Dec 11, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T19/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for provision of a power supply that combines the advantages of current regulation with voltage limitation to enable corona chargers that can be run at higher current regulated set points for lower resistance sheets. The voltage limit will protect against arcing when high resistance media is used. This wider operation window can be provided without the need to track sheet types in the process and shift the operating set points, which would result in much more complicated machine control algorithms. The regulation and limit reference controls retain the ability of changing the operating set points of the power supply, such that it can be adapted to alternate physical configurations of the discharging system and the printing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.