Radiation image storage panel

1. A radiation image storage panel which comprises a phosphor layer containing an energy-storing phosphor, wherein the storage panel has a surface showing an absorbance of 0.2 to 0.5 at the stimulating wavelength of the phosphor, and the phosphor layer contains the phosphor therein at a packing density of 3.0 g/cm 3 or more.

2. The radiation image storage panel of claim 1 , wherein the surface of the storage panel shows absorbances A and B at the stimulating wavelength and at the emission wavelength of the energy-storing phosphor, respectively, under the condition that the ratio A/B is 4.0 or more.

3. The radiation image storage panel of claim 2 , wherein the ratio A/B is 4.5 or more.

4. The radiation image storage panel of claim 2 , wherein the surface of the storage panel shows an absorbance of 0.25 to 0.5 at the stimulating wavelength, and the packing density of the phosphor in the phosphor layer is 3.3 g/cm 3 or more.

5. The radiation image storage panel of claim 1 , wherein the surface of the storage panel shows an absorbance of 0.25 to 0.5 at the stimulating wavelength, and the packing density of the phosphor in the phosphor layer is 3.3 g/cm 3 or more.

6. The radiation image storage panel of claim 1 , wherein the phosphor layer contains a colorant.

7. The radiation image storage panel of claim 6 , wherein the colorant is a ultramarine pigment.

8. The radiation image storage panel of claim 1 , wherein the storage panel has a protective layer having a thickness of 1 to 20 μm on the phosphor layer.

9. The radiation image storage panel of claim 1 , wherein the energy-storing phosphor is in the form of particles having a median diameter of 1.5 to 6.0 μm.

10. The radiation image storage panel of claim 1 , wherein the phosphor layer has a thickness of 30 to 150 μm.

11. The radiation image storage panel of claim 1 , wherein the phosphor layer is hardened by a hardening agent.