Radiation image conversion panel and manufacturing method thereof

A method of manufacturing a radiation image storage panel comprising a support having thereon a stimulable phosphor substance layer, the method comprising the step of:

• evaporating a stimulable phosphor substance contained in a n evaporation source so as to form the stimulable phosphor layer on the support which is rotated by a support rotation mechanism,
• wherein the evaporation source is arranged so that all of the acute angles θ1, which are formed between the direction of the support plane and the axial lines connecting arbitrary points in a unit evaporation region on the support and the center of the evaporation source, satisfy 50°≦θ1≦70°;
• the stimulable phosphor substance layer is constituted of a columnar crystal structure and slopes D1 and D2 satisfy 0°≦|D1−D2|≦40°, when the acute angles formed by the surface of said stimulable phosphor substance layer and axial lines passing through the center of the columnar crystals taken at arbitrary two points in the radiation image storage panel plane are D1 and D2;
• and
• the stimulable phosphor substance can absorb radiation passed through a photographic object and thereafter emit light by irradiation with a second energy on the stimulable phosphor substance.