A performance of a stimulable phosphor layer is enhanced by filling a
filler in spacing of columnar crystals of a stimulable phosphor layer in
a radiation image conversion panel having a stimulable phosphor layer in
the form of columnar crystals formed by a vapor deposition method.
According to the foregoing radiation image conversion panel, entire
columnar crystals were able to be evenly surface-treated by penetrating
the surface treatment agent into spacing of columnar crystals and by
being treated for the surface of columnar crystals with the surface
treatment agent in surface tension not more than 25 mN/m, and functions
concerning properties such as the prevention of reflection and scattering
of a stimulating light, water-repelling, oil-repelling, moisture
resistance, antifouling and so forth can also be added.