Systems and methods for determining a charge-to-mass ratio,...

Details Systems and methods for determining a charge-to-mass ratio,... Systems and methods for determining a charge-to-mass ratio,...

2011-03-22

2011-03-22

Gray, David M (Department: 2852)

Electrophotography

Diagnostics

Consumable

Reexamination Certificate

active

07912386

ABSTRACT:
Systems and methods are provided for using a sensor to determine a charge-to-mass ratio, and a concentration, of a mixture including a first component and a second component. A base resonance frequency of the sensor in an unloaded state is measured. A surface of a vibrating element of the sensor is loaded with the mixture. A first resonance frequency, of the loaded sensor is measured and a mass of the mixture is calculated. A first component is attracted to, and a second component is removed from, the vibrating element of the sensor. A second resonance frequency, and a first charge, of the sensor are measured. The first component is removed and a second charge is measured. A mass and charge of the first component are calculated. Charge to mass ratio, and the concentration, of the first component are then derived from the calculated values.

REFERENCES:
patent: 5006897 (1991-04-01), Rimai et al.
patent: 5422664 (1995-06-01), Stephany
patent: 6941084 (2005-09-01), Hamby et al.

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