| http://www.w3.org/ns/prov#value | - A second kind of the modulation is to modulate the voltage of the DC power source 70 applied across the recording electrode 20 and the auxiliary electrode 30, while retaining the voltage of the DC power source 80 applied across the recording electrode 20 and the backing electrode 60 substantially constant at such a high voltage for example 1.9 KV, that makes the fluid ink 40 fly when the fluid ink
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