Patent ID: 11968900
Assignee: XEROX CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. An apparatus for poling a piezoelectric material, said apparatus comprising:
a platen which holds a sample of piezoelectric material to be poled;
a stage to which the platen is mounted, said stage being arranged to selectively move the platen and thereby the sample which the platen holds, said platen being movable by the stage selectively between a first position and a second position;
a corona source that generates a corona to which the sample is exposed when the platen is moved to the first position by the stage; and
an electrostatic voltmeter having a probe, said electrostatic voltmeter measuring a surface potential of the sample when the platen is moved to the second position by the stage, the probe being selectively movable so as to be spaced at a selected distance from a surface of the sample.