Patent ID: 7018789

Claim:
A radiographic image conversion panel comprising: a support; and at least one photostimulable phosphor layer provided on the support, wherein at least one layer of the photostimulable phosphor layers is formed by a photostimulable phosphor represented by a following general formula (1), and a density of activation metal atoms at an end of a photostimulable phosphor crystal and a density of activation metal atoms in the vicinity of the support satisfy a following formula 1: 0≦(the density of the activation metal atoms at the end of the photostimulable phosphor crystal)/(the density of the activation metal atoms in the vicinity of the support)<1, and the general formula (1) is expressed by M 1 X. a M 2 X′ 2 .b M 3 X″ 3 :e A (1) wherein the M 1 is at least one kind of alkali metal selected from a group consisting of Li, Na, K, Rb and Cs, the M 2 is at least one kind of bivalent metal atom selected frown a group consisting of Be, Mg, Ca, Sr, Ba, Zn, Cd, Cu and Ni, the M 3 is at least one kind of trivalent metal atom selected from a group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga and In, each of the X, the X′ and the X″ is at least one kind of halogen selected from a group consisting of F, Cl, Br and I, the A is at least one kind of metal atom selected from a group consisting of Eu, Tb, In, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Gd, Lu, Sm, Y, Tl, Na, Ag, Cu and Mg and each of the a, the b and the e represents a numeric value in a range of 0≦a<0.50, 0≦b<0.5 and 0<e≦0.2.