US4752557A
Expired / Lapsed
US
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Method of radiphotography using light-stimulable radiation image storage panel
Assignee: Konica Minolta Inc
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Filing: 1986-02-12
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Granted: 1988-06-21
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Expires: 2006-02-12
Abstract
Abstract A radiation image storage panel having a stimulable phosphor layer provided on a substrate with a honeycomb structure constituted of a number of cells partitioned by wall members filled with the stimulable phosphor is prepared by forming the substrate for phosphor layer by casting in a mother mold or etching of the substrate and filling the cells on the substrate with the stimulable phosphor. This radiation image storage panel can give images of markedly improved sharpness.
Inventors
- 👤 Hisanori Tsuchino
- 👤 Manami Teshima
- 👤 Hiroshi Takeuchi
- 👤 Fumio Shimada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:30
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/161; G01T1/164; G01T1/1641; G01T1/1644; G01T1/20; G01T1/2012; G21; G21K; G21K4/00; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
245 words
A method for radiophotography, comprising: transmitting radiation energy through an object to be photographed to produce a transmitted radiation image; absorbing and storing the transmitted radiation image in a light-stimulable radiation image storage panel which comprises: a honeycomb structure comprising partition members arranged to define a plurality of adjacent but separated cells arranged in a honeycomb manner, each of said cells being separated from adjacent cells by said partition members; and a light-stimulable phosphor in said respective cells of said honeycomb structure, said light stimulable phosphor producing a stimulated emission when irradiated or stimulated by a laser exciting light having a wavelength of from about 500 to about 800 nm, impinging thereon after said radiation image is stored in said image storage panel, said partition member of an excited cell substantially preventing scattering or spreading of the exciting light so as to substantially prevent the exciting light from impinging on the light-stimulable phosphors located outside the confines of the respective cell containing said excited or stimulated phosphor; exciting the stored image in said storage panel by stimulating the phosphor with a scanning laser light scanning over the surface of the panel to permit the radiation energy stored in the stimulable phosphor in said cells of said honeycomb structure to be radiated as luminescence; and then detecting radiated luminescence from said cells of said honeycomb structure in synchronization with said scanning of said laser light, and displaying the radiation image corresponding to the detected radiated luminescence.
Claim 2
Independent Claim
245 words
A method for radiophotography, comprising: transmitting radiation energy through an object to be photographed to produce a transmitted radiation image; absorbing and storing the transmitted radiation image in a light-stimulable radiation image storage panel which comprises: a honeycomb structure comprising partition members arranged to define a plurality of adjacent but separated cells arranged in a honeycomb manner, each of said cells being separated from adjacent cells by said partition members; and a light-stimulable phosphor in said respective cells of said honeycomb structure, said light stimulable phosphor producing a stimulated emission when irradiated or stimulated by a laser exciting light having a wavelength of from about 500 to about 800 nm, impinging thereon after said radiation image is stored in said image storage panel, said partition member of an excited cell substantially preventing scattering or spreading of the exciting light so as to substantially prevent the exciting light from impinging on the light-stimulable phosphors located outside the confines of the respective cell containing said excited or stimulated phosphor; exciting the stored image in said storage panel by stimulating the phosphor with a scanning laser light scanning over the surface of the panel to permit the radiation energy stored in the stimulable phosphor in said cells of said honeycomb structure to be radiated as luminescence; and then detecting radiated luminescence from said cells of said honeycomb structure in synchronization with said scanning of said laser light, and displaying the radiation image corresponding to the detected radiated luminescence.
Claim 3
Dependent Claim
28 words
The method of claim 1, wherein said honeycomb structure comprises a substrate which includes a bottom member and said partition members extending upwardly relative to said bottom member.
Claim 4
Dependent Claim
19 words
The method of claim 2, wherein said bottom member is connected to said partition members which extend upwardly therefrom.
Claim 5
Dependent Claim
28 words
The method of claim 1, wherein, at the top surface of said panel, ratio of cell area to the area of said partition members if 50% or more.
Claim 6
Dependent Claim
20 words
The method of claim 1, wherein the depth of said cells is from about 30 μm to about 1000 μm.
Claim 7
Dependent Claim
20 words
The method of claim 1, wherein said partition members have a thickness of from about 10 to about 300 μm.
Claim 8
Dependent Claim
36 words
The method of claim 1, wherein said partition members have upper surfaces, and said stimulable phosphor in said cells have upper surfaces which are on the same level as said upper surfaces of said partition members.
Claim 9
Dependent Claim
19 words
The method of claim 1, further comprising a protective film on the outer exposed surface of said stimulable phosphor.
Claim 10
Dependent Claim
19 words
The method of claim 1, wherein said stimulable phosphor has a mean grain size of 1 to 30 μm.
Claim 11
Dependent Claim
15 words
The method of claim 1, wherein said partition members are absorptive to said exciting light.
Claim 12
Dependent Claim
15 words
The method of claim 1, wherein said partition members are reflective to said exciting light.
Claim 13
Dependent Claim
14 words
The method of claim 1, wherein said stimulable phosphor is dispersed in a binder.
Claim 14
Dependent Claim
13 words
The method of claim 1, wherein said cells are substantially square in cross-section.
Claim 15
Dependent Claim
13 words
The method of claim 1, wherein said cells are substantially circular in cross-section.
Claim 16
Dependent Claim
13 words
The method of claim 1, wherein said cells are substantially hexagonal in cross-section.
Claim 17
Dependent Claim
15 words
The method of claim 1, wherein said partition members are made of a metal material.
Claim 18
Dependent Claim
13 words
The method of claim 1, wherein the radiation energy is X-ray radiation energy.
Claim 19
Dependent Claim
498 words
The method of claim 1, wherein said light-stimulable phosphor is a phosphor selected from the group consisting of: earth fluorohalide phosphor of the formula: (Ba 1-x-y Mg x Ca y )FX:eEu 2+ (where X is at least one of Br and Cl, x, y and e are numbers satisfying the conditions of 0<x+y≦0.6, xy≠0 and 10 -6 ≦e≦5×10 -2 , respectively); a phosphor of the formula: LnOX:xA (where Ln represents at least one of La, Y, Gd and Lu, X represents Cl and/or Br, A represents Ce and/or Tb, and x represents a number staifying 0<x<0.1); a phosphor of the formula: (Ba 1-x M II x)FX:yA (where M II represents at least one of Ma, Ca, Sr, Zn and Cd, X represents at least one of Cl, Br and I, A represents at least one of Eu, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb and Er, x and y are numbers satisfying the conditions of 0≦x≦0.6 and 0≦y≦0.6); a phosphor of the formula: BaFX,xCe,yA (where X is at least one of Cl, Br and I, A is at least one of In, Tl, Gd, Sm and Zr, x and y are 0<x≦2×10 -1 and 0<y≦5×10 -2 , respectively); a phosphor of divalent metal fluorohalide activated with a rare earth element of the formula: M II FX: xA:yLn (where M II is at least one kind of Ba, Ca, Sr, Mg, Zn and Cd, A is at least one kind of BeO, MgO, CaO, SrO, BaO, ZnO, Al 2 O 3 , Y 2 O 3 , La 2 O 3 , In 2 O 3 , SiO 2 , TiO 2 , ZrO 2 , GeO 2 , SnO 2 , Nb 2 O 5 , Ta 2 O 5 and ThO 2 , Ln is at least one of Eu, Tb, Ce, Tm, Dy, Pr, Ho, Nd, Yb, Er, Sm and Gd, X is at least one of Cl, Br and I, x and y are numbers satisfying the conditions of 5×10 -5 ≦x≦0.5 and 0<y≦0.2); xM.sub.3 (PO.sub.4).sub.2.NX.sub.2 :yA Formula [I] M.sub.3 (PO.sub.4).sub.2 :yA Formula [II] (wherein M and N each represents at least one kind of Mg, Ca, Sr, Ba, Zn and Cd, X represents at least one kind of F, Cl, Br and I, A represents at least one kind of Eu, Tb, Ce, Tm, Dy, Pr, He, Nd, Yb, Er, Sb, Tl, Mn and Sn, and x and y are numbers satisfying 0<x≦6 and 0≦y≦1, respectively); and a phosphor of the formula [III] or [IV]: nReX.sub.3.mAX.sub.2 ':xEu Formula [III] nReX.sub.3.mAX.sub.2 ':xEu.ySm Formula [IV] (wherein Re represents at least one kind of La, Gd, Y and Lu, A represents at least one kind of alkaline earth metals, Ba, Sr and Ca, X and X' represent at least one kind of F, Cl and Br, x and y are numbers satisfying the Conditions of 1×10 -4 <x<3×10 -1 , 1×10 -4 <y<1×10 -1 , and n/m satisfies the condition of 1×10 -3 <n/m<7×10 -1 ).
Claim 20
Dependent Claim
19 words
The method of claim 1, comprising exciting said stored image in said storage panel by a He-Ne laser light.
Claim 21
Dependent Claim
13 words
The method of claim 1, wherein said honeycomb structure is a non-metallic structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |