Dielectric heating device and liquid ejection system

Abstract

A dielectric heating device includes a first heater, configured to heat and dry the liquid, having first electrode and the second electrode facing a medium on which is deposited a liquid containing water, and a first coil electrically coupled in series with the first electrode, and a voltage application section that applies an AC voltage having a predetermined driving frequency to the first electrode and the second electrode. The first heater is configured such that a difference between a resonant frequency of the first heater and the driving frequency when the water content of the medium is in a first range is smaller than the difference between the resonant frequency of the first heater and the driving frequency when the water content is in a second range smaller than the first range, and a heat amount, when the water content is in the first range, is larger than a heat amount, when the water content is in the second range.

Dependencies are inferred from the claim text.