Patent Number: 053409965
Section: claims

1. A radiation image recording apparatus in which a stimulable phosphor sheet provided with a layer of a stimulable phosphor is exposed to radiation, which carries information about an image, an the image is thereby stored on the stimulable phosphor sheet, said stimulable phosphor exhibiting such properties that, when it is exposed to radiation and is then exposed to stimulating rays, it emits light in proportion to the amount of energy stored thereon during its exposure to the radiation, wherein the improvement comprises the provision of a member, which is provided with a layer of a phosphor and which is located such that the layer of said phosphor is close to or in close contact with said stimulable phosphor sheet located at the position that is exposed to the radiation, said phosphor exhibiting such properties that, when it is exposed to the radiation, it produces fluorescence having wavelengths falling within the stimulation wavelength range of said stimulable phosphor. 2. A radiation image recording apparatus as defined in claim 1 wherein said stimulable phosphor is represented by the formula BaFX:Eu.sup.2+ wherein X is a halogen. 3. A radiation image recording apparatus as defined in claim 2 wherein said phosphor, which produces the fluorescence, is represented by the formula Gd.sub.2 O.sub.2 S:Tb.sup.3+. 4. A radiation image recording apparatus as defined in claim 2 wherein said phosphor, which produces the fluorescence, is represented by the formula Y.sub.2 O.sub.2 S:Tb.sup.3+. 5. A radiation image recording apparatus as defined in claim 1 wherein said radiation is X-rays. 6. A radiation image recording apparatus as defined in claim 1 wherein said stimulating rays are a laser beam.