Device and method for measuring toner current

Details Device and method for measuring toner current Device and method for measuring toner current

2007-04-10

2007-04-10

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C399S029000

Reexamination Certificate

active

11252521

ABSTRACT:
A toner current measuring device able to measure a toner current.The toner current measuring device having provided therein a toner deposit capacitor c1including an electrode11and an electrode12disposed in opposition, a reference capacitor c2having a mechanism for adjusting a capacitance thereof; a power supply unit4; and a measuring unit10for measuring, when a voltage is applied to both capacitors to cause a transfer, between the opposing electrodes, of charged toner deposited on the electrode11, a difference between currents flowing in the toner deposit capacitor c1and the reference capacitor c2, the difference being measured as a toner current generated as a result of the transfer of the charged toner.

REFERENCES:
patent: 6014028 (2000-01-01), Ohashi et al.
patent: 6223004 (2001-04-01), Kodama
patent: 6472887 (2002-10-01), Tullis et al.
patent: 6613209 (2003-09-01), Ozerov
“Experimental Polymer Science, New Edition,” vol. 9,Properties of Polymers(2)—Electrical, Optical, and Magnetic Properties, The Society of Polymer Science, Japan, Kyoritsu Shuppan Co., Ltd., 1998.

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