| 摘要 |
A system for enhancing air purging of a modulator assembly of an electrostatic voltmeter for an electrophotographic process. A vane connected to a chopper element is located at one end of a vibratory beam so as to move when the vibratory beam oscillates. Movement of the vane generates air turbulence and currents in the vicinity of the modulator and sensor electrode thereby improving purging of toner particles and other contaminants and preventing such contaminants, which tend to cause drift errors, from settling in the vicinity of the modulator and sensor electrode.
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