Radiation image storage panel and process for the preparation of the same

A process for the preparation of a radiation image storage panel which has a phosphor layer comprising a stimulable phosphor, which comprises steps of molding a phosphor layer-forming material containing a stimulable phosphor into a sheet, sintering the molded product and immersing the sintered product in a liquid containing a colorant capable of absorbing at least a portion of stimulating rays for the stimulable phosphor to form a colored phosphor layer.

A process for the preparation of a radiation image storage panel which has a phosphor layer comprising a stimulable phosphor, which comprises steps of molding at least two phosphor layer-forming materials containing stimulable phosphors of mean diameters different from each other into a multi-layer sheet in such a manner that the materials are arranged in order of the mean diameter of the stimulable phosphor, and sintering the molded product to form a phosphor layer comprised of at least two layers, the relative density of each layer increasing in the direction perpendicular to the panel plane toward the read out side of the panel.

The process for the preparation of a radiation image storage panel which has a phosphor layer comprising a stimulable phosphor, which comprises steps of molding at least two phosphor layer-forming materials containing stimulable phosphors and further additives of different kinds and/or in different amounts including 0 from each other into a multi-layer sheet, and sintering the molded product to form a phosphor layer composed of at least two layers, the relative density of each layer increasing in the direction perpendicular to the panel plane toward the read out side of the panel.

A radiation image storage panel having a sintered stimulable phosphor layer which consists essentially of a sintered stimulable phosphor, has a relative density of not less than 70%, and is binder free.

A radiation image storage panel having a sintered stimulable phosphor layer which consists essentially of a sintered stimulable phosphor and has a relative density of not less than 70%, in which said phosphor layer is composed of at least two layers and the relative density of each layer increases in the direction perpendicular to the panel plane toward the read out side of the panel.