Polar Graphing on a Cartesian Recorder
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-05
A fixture is provided to receive a magnetic element 2 such as a magnetic roll, for development or cleaning in an electrophotographic process. It is desired to generate a polar plot of the magnetic field strength around this roll. The fixture consists of a suitable drive, such as a motor 1 to rotate the magnetic element 2 at an appropriate speed for graphing. Directly attached to the magnetic element is an angle encoding potentiometer 6 producing two outputs, sin R and cos R, where R is the angle of rotation. Also provided is means to position the sensing probe 3 relative to the magnetic element. The gaussmeter 4 provides an output proportional to the sensed magnetic field strength, with the magnetic polarity being indicated by the gaussmeter output polarity.