Monroe-electronics Electrostatic Fieldmeter - Static Monitor - model Manuale Utente Scaricare il pdf (Pagina 59)

APNE-0015 58

Typical Web Charging Scenario

If we select values of the above factors and hold them constant while allowing the web and

roller to make multiple identical contacts, the charge that is transferred follows an

exponential charging relationship versus time. The web charge density then gradually

approaches equilibrium at velocity V.

Figure II-2

Typical Roller/Web Charging Scenario

Measure

Web Charge

At time = 0, web is uncharged

At time = t

, charge Q is at equilibrium q

equilibrium charge density

Time

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Monroe-electronics Electrostatic Fieldmeter - Static Monitor - model Manuale Utente Pagina 59