公开(公告)号：EP0139192A3

公开(公告)日：1985-09-11

申请号：EP84110527

申请日：1984-09-04

申请人： KASEI OPTONIX, LTD.

发明人： Shimizu, Etsuo c/o Kasei Optonix Ltd ,  Aoki, Yuji c/o Kasei Optonix Ltd ,  Suzuki, Yujiro c/o Kasei Optonix Ltd ,  Miura, Norio c/o Kasei Optonix Ltd

IPC分类号： C09K11/77 ,  G21K04/00

CPC分类号： G21K4/00 ,  C09K11/7771 ,  Y10T428/25 ,  Y10T428/273

摘要： A radiographic intensifying screen comprising a support and a fluorescent layer formed on the support, characterized in that said fluorescent layer is composed essentially of a rare earth oxysulfide phosphor represented by the formula: where Ln is at least one element selected from the group consisting of La, Gd, Y and Lu, R is at least one element selected from the group consisting of Nd and Ho, A is at least one element selected from the group consisting of Pr, Er and Yb, and x, y and z are numbers within the ranges of 0.001≦x≦0.02, 0.0001≦y≦0.01 and O≦z≦0.01, respectively, and x?y+z.