Method and device for electrostatic charging
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 3, 2002
Grant Date -
N/A
app pub date -
Jan 28, 2000
filing date -
Apr 2, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention is a device which electrostatically charges external sides of at least one moving web. The invention includes a pair of rollers, each roller having an outer coating of limited electrical conductivity and an inner core in contact with the outer coating with the outer coating of each roller being spaced apart to define a gap through which the at least one moving web passes so that the outer coating of each roller contacts one of the external sides of the at least one web to transfer electrical charge from the outer surface coating to the moving web; and a high voltage power supply which applies electrical charge to the outer coating with one polarity of the power supply being grounded and electrically connected to a part of the core and another polarity of the power supply being electrically connected to a corona charging electrode which transfers the electrical charge to the outer coating of each roller.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully