Radiation image conversion panel
AssigneeKonica Corporation
InventorsSatoshi Honda, Osamu Morikawa
Life of this patent
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Abstract
A radiation image conversion panel comprising a support provided thereon a stimulable phosphor layer and a protective layer including an alumina-evaporated layer, wherein the protective layer has a light transmittance of not more than 80% to light having a wavelength of not more than 400 nm and has a light transmittance of not less than 80% to light having a wavelength of not less than 410 nm, and the stimulable phosphor layer comprises a stimulable phosphor having a maximum emission in a wavelength of not less than 410 nm.
Claims13
A radiation image conversion panel comprising a support provided thereon a stimulable phosphor layer and a protective layer of the stimulable phosphor layer, the protective layer including an alumina-evaporated layer,
- wherein the protective layer has a light transmittance of not more than 80% to light having a wavelength of not more than 400 nm and has a light transmittance of not less than 80% to light having a wavelength of not less than 410 nm, and the stimulable phosphor layer contains an alkali halide stimulable phosphor represented by a formula selected from the group consisting of the following Formulae (1) to (3),
- M(I)X·aM(II)X′2·bM(III)X″3:cA Formula (1)
- wherein M(I) is Rb or Cs;
- M(II) is a divalent metal selected from the group consisting of Mg, Ca, Sr, Ba, Zn, Cd and Ni;
- M(III) is a trivalent metal selected from the group consisting of Sc, Y, La, Pm, Lu, Al, Ga and In;
- each of X, X′ and X″ is a halogen selected from the group consisting of Cl, Br and I;
- A is an activator selected from the group consisting of Eu, In, Ga, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er Gd, Sm, Tl, Na, Ag and Cu;
- a is a numeric value in the range of 0<a<0.5, provided that a is a numeric value in the range of 0<a<0.25 when A is Eu;
- b is a numeric value in the range of 0≦b<0.5;
- and c is a numeric value in the range of 0<c≦0.2,
- (1−x)CsBr·xM(I)X·aM(II)X′2·bM(III)X″3:cEu:dA Formula (22)
- wherein M(I) is Rb or Cs;
- M(II) is a divalent metal selected from the group consisting of Be, Mg, Ca, Sr and ba;
- M(III) is a trivalent metal selected from the group consisting of Y, La, Lu, Al, Ga and In;
- each of X, X′ and X″ is a halogen selected from the group consisting of F, Cl, Br and I;
- each of Eu and A is an activator, and the activator A is a metal selected from the group consisting of In, Ga, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Gd, Sm, Tl, Na, Ag and Cu;
- and each x, a, b, c and d is a numeric value in the range of 0≦x≦0.4, 0.7≦x≦1.0, 0≦a≦0.5, 0≦b<0.5, 0<C<0.2 and 0≦d<0.2,
- (1−x)RbBr·xM(I)X·aM(II)X′2·bM(III)X″3:cEu:dA Formula (3)
- wherein M(I) is Rb or Cs;
- M(II) is a divalent metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn, Cd and Ni;
- M(III) is a trivalent metal selected from the group consisting of Sc, Y, La, Pm, Lu, Al, Ga and In;
- each of X, X′ and X″ is a halogen selected from the group consisting of F, Cl, Br and I;
- each of Eu and A is an activator, and the activator A is a metal selected from the group consisting of In, Ga, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Gd, Sm, Na, Ag, Cu, Pb, Bi, and Mn;
- and each x, a, b, c and d is a numeric value in the range of 0≦x≦0.4, 0.7≦x≦1.0, 0≦a≦0.5, 0≦b<0.5, 0<C<0.2 and 0≦d<0.2.
A radiation image conversion panel comprising a support provided thereon a stimulable phosphor layer and a protective layer of the stimulable phosphor layer, the protective layer including an alumina-evaporated layer,
- wherein the protective layer has a light transmittance of not more than 80% to light having a wavelength of not more than 400 nm and has a light transmittance of not less than 80% to light having a wavelength of not less than 410 nm, and the stimulable phosphor layer comprises an alkali halide stimulable phosphor having a maximum emission in a wavelength of not less than 410 nm.
Dependencies are inferred from the claim text.