Patent ID: 8426825

Claim:
A radiographic device, comprising: an x-ray converting layer converting radiation into an electric charge; a bias applying electrode, provided at the incident radiation side of the x-ray converting layer; pixel electrodes, provided in the form of a matrix, on the side opposite from a common electrode; a switching element provided corresponding to each pixel electrode; a gate controller controlling the opening of the switching element; a charge amp converting into a voltage that is read out through the switching element; an A/D converting circuit converting into a digital value the voltage converted by the charge amp; a temperature detecting element detecting the temperature of the x-ray converting layer; a Peltier element changing the temperature of the x-ray converting layer; and a temperature controller controlling a voltage applied to the Peltier element, wherein: during the reading interval after the switching element is opened by the gate controller and the reading out of the electric charge has commenced up through the completion of the A/D conversion, the temperature controller controls a frequency of the voltage applied to the Peltier element to be lower than a frequency of the voltage applied to the Peltier element in an interval other than the reading interval.