Apparatus and method for measuring polar charge on a sheet or mo

Details Apparatus and method for measuring polar charge on a sheet or mo Apparatus and method for measuring polar charge on a sheet or mo

1994-06-20

1995-10-03

Wieder, Kenneth A.

Electricity: measuring and testing

A material property using electrostatic phenomenon

324454, 324457, 355216, 361214, G01N 2760, G03G 1500

Patent

active

054555140

ABSTRACT:
The present invention is a device for measuring the electric surface charge density on each surface of a sheet. The sheet can either be moving or non-moving. If the sheet is non-moving a pliers-like device having a pair of electrodes aligned opposite with each other is used. The sheet is placed between the electrodes and the surface measurement is made by either one or two electrometers. For a moving web, the apparatus includes a first and second roller each having a charge measurement segment electrically isolated from the roller shell wherein the charge measurement segments periodically engage the web running through the two rollers. Two grounded shields which periodically shield the charge measurement segment are provided. Two electrometers are provided and from this surface charge density measurement and net charge density measurement on the moving sheet are obtained.

REFERENCES:
patent: 3364423 (1968-01-01), Moulton
patent: 3944354 (1976-03-01), Benwood et al.
patent: 4233562 (1980-11-01), Blythe
patent: 5066918 (1991-11-01), Pazda et al.
K. L. Clum and R. J. Pazda, Journal of Electrostatics, 24, Segmented Roller: A Device for Measuring Charge Density on a Moving Conducting Web, 1989, pp. 21-32.
K. L. Clum and R. J. Pazda, Journal of Electrostatics, 28, The Split Segmented Roller: A Device for Measuring Lateral Charge Distribution on a Moving Web, 1992, pp. 39-45.

Affiliated with

Also associated with

Rating

Apparatus and method for measuring polar charge on a sheet or mo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for measuring polar charge on a sheet or mo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for measuring polar charge on a sheet or mo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1079574