Patent · US Expired

High duty cycle AC corona charger

US5642254A · kind A · utility

19Cited by

7References

29Claims

0Family size

Assignee

EASTMAN KODAK COMPANY · US

Inventors

Bruce R. Benwood · Churchville, US
John W. May · Rochester, US
Martin J. Pernesky · Rochester, US

Key dates

Filing date	Mar 11, 1996
Grant date	Jun 24, 1997
Priority date	—
Expiry date	Mar 11, 2016

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/0291
WIPO fieldOptics
WIPO sectorInstruments

Abstract

This invention pertains to an AC charger (10) in which an AC voltage waveform applied to a corona wires (12) has a duty cycle of between 50% and 90%. This increases the efficiency of the charger without increasing the signal-to-noise ratio. In one embodiment, the AC voltage waveform is asymmetric.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.