EP0104652A2
Expired / Lapsed
EP
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Phosphor and radiation image storage panel employing the same
Assignee: Fujifilm Holdings Corp
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Filing: 1983-09-27
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Granted: —
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Expires: 2003-09-27
Abstract
Abstract A divalent europium activated alkaline earth metal fluorohalide phosphor containing a transition metal as a coacitivator and a sodium halide, having the formula (I): in which M II is at least one alkaline earth metal selected from the group consisting of Ba, Sr and Ca; each of X and X' is at least one halogen selected from the group consisting of Cl, Br and I; A is at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Co and Ni; and x, y and z are numbers satisfying the conditions of 0 < x ≦ 2, 0 < y ≦ 0.2 and 0 < z ≦ 10- 2 , respectively, and a radiation image storage panel employing said phosphor.
Inventors
- 👤 Chiyuki Fuji Photo Film Co. Ltd. Umemoto
- 👤 Kenji Fuji Photo Film Co. Ltd. Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:45
CPC Classifications
G; G21; G21K; G21K4/00; C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7704; C09K11/7705; C09K11/7728; C09K11/7732; C09K11/7733
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A divalent europium activated alkaline earth metal fluorohalide phosphor containing a transition metal as a coacitivator and a sodium halide, having the formula (I): in which M II is at least one alkaline earth metal selected from the group consisting of Ba, Sr and Ca; each of X and X' is at least one halogen selected from the group consisting of Cl; Br and I; A is at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Co and Ni; and x, y and z are numbers satisfying the conditions of 0 < x < 2, 0 < y < 0.2 and 0 < z < 10 -2 , respectively.
Claim 2
Dependent Claim
115 words
A divalent europium activated alkaline earth metal fluorohalide phosphor containing a transition metal as a coacitivator and a sodium halide, having the formula (I): in which M II is at least one alkaline earth metal selected from the group consisting of Ba, Sr and Ca; each of X and X' is at least one halogen selected from the group consisting of Cl; Br and I; A is at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Co and Ni; and x, y and z are numbers satisfying the conditions of 0 < x < 2, 0 < y < 0.2 and 0 < z < 10 -2 , respectively.
Claim 3
Dependent Claim
38 words
The phosphor as claimed in claim 1, in which and z in the formula (I) are numbers satisfying the conditions of 10 -5 ≦ y < 10 -1 and 10 -6 < z < 10 -3 , respectively.
Claim 4
Dependent Claim
33 words
The phoshor as claimed in claim 1 or claim 2, in which A in the formula (I) is at least one transition metal selected from the group consisting of V, Cr and Mn.
Claim 5
Dependent Claim
147 words
A radiation storage panel comprising a support and at least one phosphor layer provided thereon which comprises a binder and a stimulable phosphor dispersed therein, in which at least one phosphor layer contains a divalent europium activated alkaline earth metal fluorohalide phosphor containing a transition metal as a coacitivator and a sodium halide, having the formula (I): in which M II is at least one alkaline earth metal selected from the group consisting of Ba, Sr and Ca; each of X and X' is at least one halogen selected from the group consisting of Cl, Br and I; A is at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Co and Ni; and x, y and z are numbers satisfying the conditions of 0 < x < 2, 0 < y < 0.2 and 0 < z < 10 , respectively.
Claim 6
Dependent Claim
147 words
A radiation storage panel comprising a support and at least one phosphor layer provided thereon which comprises a binder and a stimulable phosphor dispersed therein, in which at least one phosphor layer contains a divalent europium activated alkaline earth metal fluorohalide phosphor containing a transition metal as a coacitivator and a sodium halide, having the formula (I): in which M II is at least one alkaline earth metal selected from the group consisting of Ba, Sr and Ca; each of X and X' is at least one halogen selected from the group consisting of Cl, Br and I; A is at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Co and Ni; and x, y and z are numbers satisfying the conditions of 0 < x < 2, 0 < y < 0.2 and 0 < z < 10 , respectively.
References Cited (Backward Citations)
No citation records indexed.
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