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    • 4. 发明授权
    • Intensifying screens
    • 加强屏幕
    • US4696868A
    • 1987-09-29
    • US912515
    • 1986-09-29
    • Yuji AokiHidenaga HoriuchiAkio UmemotoNorio Miura
    • Yuji AokiHidenaga HoriuchiAkio UmemotoNorio Miura
    • G03C5/17G21K4/00H05B33/00
    • G21K4/00G03C5/17
    • An intensifying screen comprising: a support, a fluorescent layer on the support and a protective layer on the fluorescent layer, wherein the fluorescent layer is composed essentially of a blue emitting phosphor selected from the group consisting of (1) a M.sup.II WO.sub.4 phosphor wherein M.sup.II is at least one of Mg, Ca, Zn and Cd, (2) a CaWO.sub.4 phosphor, (3) a BaSO.sub.4 :Pb phosphor, (4) a BaSO.sub.4 :Eu.sup.2+ phosphor, (5) a (Ba, Sr)SO.sub.4 :Eu.sup.2+ phosphor, (6) a MeF.sub.2.pMe'X.sub.2.qKX'.rMe"SO.sub.4 :mEu.sup.2+, nTb.sup.3+ phosphor, wherein Me is at least one of Mg, Ca, Sr and Ba, each of Me' and Me" is at least one of Ca, Sr and Ba, each of X and X' is at least one of Cl and Br, and p, q, r, m and n are numbers which satisfy the conditions of 0.80.ltoreq.p.ltoreq.1.5, 0.ltoreq.q.ltoreq.2.0, 0.ltoreq.r.ltoreq.1.0, 0.001.ltoreq.m.ltoreq.0.10 and 0.ltoreq.n.ltoreq.0.05, respectively, provided q+r.noteq.0, (7) a LnOX:Tm phosphor wherein Ln is La or Gd, and X is Cl or Br, (8) a Ln(Ta.sub.1-x, Nb.sub.x)O.sub.4 :Tm phosphor wherein Ln is at least one of La, Y Gd and Lu, and 0.ltoreq.x.ltoreq.0.3, (9) a Y.sub.2 O.sub.2 S:Tb phosphor, (10) a CsI:Na phosphor, (11) a CsI:T1 phosphor, (12) a NaI phosphor, (13) a ZnS:Ag phosphor and (14) a HfP.sub.2 O.sub.7 : Cu phosphor, and wherein at least one of the fluorescent and protective layers is colored with a colorant which has a main absorption peak at a wavelength in the region of 400 to 600 nm.
    • 一种增强屏幕,包括:支撑体,支撑体上的荧光层和荧光层上的保护层,其中荧光层基本上由选自以下的蓝色发光荧光体组成:(1)MIIWO4荧光体,其中MII为 Mg,Ca,Zn和Cd中的至少一种,(2)CaWO 4荧光体,(3)BaSO 4 :Pb荧光体,(4)BaSO 4 :Eu 2+荧光体,(5)a(Ba,Sr)SO 4: ,(6)MeF2.pMe'X2.qKX'.rMe''SO4:mEu2 +,nTb3 +荧光体,其中Me是Mg,Ca,Sr和Ba中的至少一种,Me'和Me'中的每一个至少是 Ca,Sr和Ba中的一个,X和X'分别为Cl和Br中的至少一个,p,q,r,m和n为满足条件为0.80