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EP0174875A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method for converting radiographic image and radiation energy storage panel having stimulable phosphor-containing layer

Assignee: Konica Minolta Inc
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Filing: 1985-09-16
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Granted: —
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Expires: 2005-09-16
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Abstract

Abstract Disclosed are a method for converting radiographic image which comprises the steps of: (a)storing radiation energy-corresponding to a radiographic image in a stimulable phosphor of a panel comprising a stimulable phosphor-containing layer. (b)scanning the layer with a stimulating ray to release the stored energy as a fluorescence, and (c)detecting the fluorescence to form an image, wherein the stimulable phosphor is represented by the following formula: wherein M represents either Cs or Rb; M' represents at least one of alkaline metals selected from the group consisting of Li, Na, K, Rb and Cs; M" represents at least one divalent metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn, Cd, Cu and Ni; M III represents at least one metal selected from the group consisting of Se, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Cd, Tb, Dy, Ho, Er, Tm, Yb, Lu, AI, Ga and In; A represents at least one metal oxide selected from the group consisting of BeO, MgO, CaO, SrO, BaO, ZnO, Al 2 O 3 , Y 2 0 3 , La 2 0 3 , In 2 O 3 , SiO 2 , Ti02 , Ge02 , SnO 2 , Nb 2 0 5. Ta 2 0 5 and Th0 2 ; B represents at least one metal selected from the group consisting of Eu, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Gd, Lu, Sm, Y, TI, Na, Ag, Cu, Mg, Pb, Bi, Mn, and In; X, X' and X" each may by the same or different and represent a halogen atom selected from F, C, Br and I; x, a, b, c and d are numerals in the range of O ≦x ≦ 1,0≦a≦ 1,0≦ b≦ 0.5, 0 - c 0.5 and 0 < d ≦ 0.2, respectively, and a radiation energy storage panel having a stimulable phosphor-containing layer characterized in that the stimulable phosphor comprises the compound having the above formula. The radiation energy storage panel using the present stimulable phosphor is superior in water vapor resistance to the panel using the prior art stimulable phosphor and can greatly improve lowering in stimulable emission luminance with lapse of time.

Inventors

  • 👤 Fumio C/O Konishiroku Photo Shimada
  • 👤 Akiko C/O Konishiroku Photo Kano
  • 👤 Koji C/O Konishiroku Photo Amitani
  • 👤 Hisanori C/O Konishiroku Photo Tsuchino

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-28 07:55
CPC Classifications
G; G21; G21K; G21K4/00; C; C09; C09K; C09K11/00; C09K11/08; C09K11/61; C09K11/615; C09K11/77; C09K11/7704; C09K11/7705; C09K11/7766; C09K11/7772; C09K11/7773

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 273 words
A radiation energy storage panel having a stimulable phosphor-containing layer characterized in that said stimulable phosphor is represented by the following formula: wherein M represents either Cs or Rb; M I represents at least one of alkaline metals selected from the group consisting of Li, Na, K, Rb and Cs; M II re presents at least one divalent metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn, Cd, Cu and N i; M III represents at least one metal selected from the group consisting of Se, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Cd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga and In; A represents at least one metal oxide selected from the group consisting of BeO, MgO, CaO, SrO, BaO, ZnO, A1 2 0 3 , Y 2 O 3 , La 2 O 3 , I n 2 0 3 , Si 0 2 , TiO 2 , GeO 2 , SnO 2 , Nb 2 0 5 , Ta 2 O 5 and ThO 2 ; B represents at least one metal selected from the group consisting of Eu, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Gd, Lu, Sm, Y, Tl, Na, Ag, Cu, Mg, Pb, Bi, Mn and In; X, X' and X" each may by the same or different and represent a halogen atom selected from F, Cl, Br and I; x, a, b, c and d are numerals in the range of 0 ≦ x≦ 1, 0 < a ≦ 1, 0 ≦ b ≦ 0.5, 0 ≦ c ≦ 0.5 and 0 < d < 0.2, respectively.
Claim 2
Dependent Claim 273 words
A radiation energy storage panel having a stimulable phosphor-containing layer characterized in that said stimulable phosphor is represented by the following formula: wherein M represents either Cs or Rb; M I represents at least one of alkaline metals selected from the group consisting of Li, Na, K, Rb and Cs; M II re presents at least one divalent metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn, Cd, Cu and N i; M III represents at least one metal selected from the group consisting of Se, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Cd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga and In; A represents at least one metal oxide selected from the group consisting of BeO, MgO, CaO, SrO, BaO, ZnO, A1 2 0 3 , Y 2 O 3 , La 2 O 3 , I n 2 0 3 , Si 0 2 , TiO 2 , GeO 2 , SnO 2 , Nb 2 0 5 , Ta 2 O 5 and ThO 2 ; B represents at least one metal selected from the group consisting of Eu, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Gd, Lu, Sm, Y, Tl, Na, Ag, Cu, Mg, Pb, Bi, Mn and In; X, X' and X" each may by the same or different and represent a halogen atom selected from F, Cl, Br and I; x, a, b, c and d are numerals in the range of 0 ≦ x≦ 1, 0 < a ≦ 1, 0 ≦ b ≦ 0.5, 0 ≦ c ≦ 0.5 and 0 < d < 0.2, respectively.
Claim 3
Dependent Claim 30 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 14, wherein said c is 0 and d is in the range of 0 < d ≦ 0.2.
Claim 4
Dependent Claim 18 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 15, wherein said x is 1.
Claim 5
Dependent Claim 32 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 3 ,-wherein said b is in the range of O ≦ b ≦ 1 x 1 0 - 2 .
Claim 6
Dependent Claim 29 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 4', wherein said M III is selected from Y, La, Sm, Gd, Lu, Al, Ga and In.
Claim 7
Dependent Claim 26 words
6 . A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 5 , wherein said X" is selected from F, Cl and Br.
Claim 8
Dependent Claim 26 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 3, wherein said M II is selected from Be, Mg, Ca, Sr and Ba.
Claim 9
Dependent Claim 24 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 3 , wherein said M i includes at least Rb or Cs.
Claim 10
Dependent Claim 24 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 8, wherein said A is selected from Tl, Nd, Ag and Cu.
Claim 11
Dependent Claim 30 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 4 , wherein said d is in the range of 1 x 10 -6 ≦ d < 0.1.
Claim 12
Dependent Claim 32 words
ll. A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 2, wherein said x is in the range of 0 ≦ x < 0.9 and said A comprises Tl.
Claim 13
Dependent Claim 31 words
A radiation energy storage panel having a stimulable phosphor-containing layer of Claim 1, wherein said c is in the range of 0 < c < 0.2 and said x is 1.
Claim 14
Independent Claim 67 words
A method of converting a radiographic image which comprises the steps of: (a) storing radiation energy-corresponding to a radiographic image in a stimulable phosphor of a panel comprising a stimulable phosphor-containing layer, (b) scanning said layer with a stimulating ray to release said stored energy as a fluorescence, and (c) detecting said fluorescence to form an image, wherein said stimulable phosphor is represented by the following formula:
Claim 15
Independent Claim 67 words
A method of converting a radiographic image which comprises the steps of: (a) storing radiation energy-corresponding to a radiographic image in a stimulable phosphor of a panel comprising a stimulable phosphor-containing layer, (b) scanning said layer with a stimulating ray to release said stored energy as a fluorescence, and (c) detecting said fluorescence to form an image, wherein said stimulable phosphor is represented by the following formula:
Claim 16
Dependent Claim 18 words
A method of converting a radiographic image of Claim 13 wherein said stimulating ray is a semoconductor laser.

References Cited (Backward Citations)

GB1462769A Cited
US3895527A Cited
JPS5129889A Cited
JPS5515025A Cited
JPS55146447A Cited
JPS55163500A Cited
JPS5611393A Cited
JPS5922046A Cited
JPS5975200A Cited

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