Patent ID: 7358518

Claim:
A radiation image detector, comprising: i) a first electrode layer, which has transmissivity with respect to radiation carrying radiation image information or with respect to recording light carrying the radiation image information, ii) a recording photo-conductor layer, which is capable of generating electric charges in accordance with a quantity of the radiation or the recording light irradiated to the recording photo-conductor layer when the radiation or the recording light having passed through the first electrode layer is irradiated to the recording photo-conductor layer, iii) a single reading charge-transportable photo-conductor layer, which is capable of generating electric charges when reading light is irradiated to the reading charge-transportable photo-conductor layer, and which is capable of operating at a stage other than the stage of the irradiation of the reading light to the reading charge-transportable photo-conductor layer, such that the reading charge-transportable photo-conductor layer acts substantially as an electrical insulator with respect to electric charges having a polarity identical with the polarity of the electric charges occurring in the first electrode layer, and such that the reading charge-transportable photo-conductor layer acts substantially as an electrical conductor with respect to electric charges having a polarity opposite to the polarity of the electric charges occurring in the first electrode layer, and iv) a second electrode layer, which has transmissivity with respect to the reading light, the radiation image information being recorded as latent image charges at a charge accumulating section, which is formed at an interface between the recording photo-conductor layer and the reading charge-transportable photo-conductor layer.