JPS63146980A - X-ray image transformation sheet - Google Patents
X-ray image transformation sheetInfo
- Publication number
- JPS63146980A JPS63146980A JP29351786A JP29351786A JPS63146980A JP S63146980 A JPS63146980 A JP S63146980A JP 29351786 A JP29351786 A JP 29351786A JP 29351786 A JP29351786 A JP 29351786A JP S63146980 A JPS63146980 A JP S63146980A
- Authority
- JP
- Japan
- Prior art keywords
- film
- ray image
- image conversion
- sheet
- vapor deposition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000009466 transformation Effects 0.000 title 1
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 238000000695 excitation spectrum Methods 0.000 claims abstract description 7
- 229920000620 organic polymer Polymers 0.000 claims abstract description 3
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 3
- 101100396546 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) tif-6 gene Proteins 0.000 claims abstract 2
- 229910052744 lithium Inorganic materials 0.000 claims abstract 2
- 229910052701 rubidium Inorganic materials 0.000 claims abstract 2
- 229910052708 sodium Inorganic materials 0.000 claims abstract 2
- 238000006243 chemical reaction Methods 0.000 claims description 26
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 18
- 150000002222 fluorine compounds Chemical class 0.000 claims description 2
- 150000003568 thioethers Chemical class 0.000 claims description 2
- -1 InSnO Chemical compound 0.000 abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 9
- 229910052681 coesite Inorganic materials 0.000 abstract description 8
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 8
- 229910052682 stishovite Inorganic materials 0.000 abstract description 8
- 229910052905 tridymite Inorganic materials 0.000 abstract description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 4
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001635 magnesium fluoride Inorganic materials 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 230000000638 stimulation Effects 0.000 abstract 3
- 238000007740 vapor deposition Methods 0.000 abstract 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 abstract 2
- 229910021583 Cobalt(III) fluoride Inorganic materials 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- 229910021570 Manganese(II) fluoride Inorganic materials 0.000 abstract 1
- 229910021608 Silver(I) fluoride Inorganic materials 0.000 abstract 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 1
- 229910010348 TiF3 Inorganic materials 0.000 abstract 1
- 238000002441 X-ray diffraction Methods 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- WZJQNLGQTOCWDS-UHFFFAOYSA-K cobalt(iii) fluoride Chemical compound F[Co](F)F WZJQNLGQTOCWDS-UHFFFAOYSA-K 0.000 abstract 1
- FPHIOHCCQGUGKU-UHFFFAOYSA-L difluorolead Chemical compound F[Pb]F FPHIOHCCQGUGKU-UHFFFAOYSA-L 0.000 abstract 1
- CTNMMTCXUUFYAP-UHFFFAOYSA-L difluoromanganese Chemical compound F[Mn]F CTNMMTCXUUFYAP-UHFFFAOYSA-L 0.000 abstract 1
- REYHXKZHIMGNSE-UHFFFAOYSA-M silver monofluoride Chemical compound [F-].[Ag+] REYHXKZHIMGNSE-UHFFFAOYSA-M 0.000 abstract 1
- 239000010408 film Substances 0.000 description 30
- 239000011241 protective layer Substances 0.000 description 18
- 239000010410 layer Substances 0.000 description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 description 9
- 239000005020 polyethylene terephthalate Substances 0.000 description 9
- 239000000020 Nitrocellulose Substances 0.000 description 6
- 229920001220 nitrocellulos Polymers 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 239000011118 polyvinyl acetate Substances 0.000 description 2
- 239000005033 polyvinylidene chloride Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Conversion Of X-Rays Into Visible Images (AREA)
- Radiography Using Non-Light Waves (AREA)
- Luminescent Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の概要〕
従来のＸ線写真法における多量のＸ線被爆量と画像の不
鮮明さとを解消し、またこれを長期間安定に実施するこ
とを可能にするために、新規な輝尽発光材料および保護
材料を使用したＸ線画像変換シートが提供される。これ
により、長期指定に低被爆量で、しかも鮮明なＸ線画像
を得ることができる。[Detailed Description of the Invention] [Summary of the Invention] To solve the large amount of X-ray exposure and blurred images in conventional X-ray photography, and to make it possible to perform this method stably for a long period of time. , an X-ray image conversion sheet using a novel stimulable luminescent material and a protective material is provided. This makes it possible to obtain clear X-ray images with low radiation exposure for long periods of time.
本発明は、デジタルＸ線画像変化システムに用いるＸ線
画像変換シートに関し、特にレーザダイオード（ＬＤ）
励起を可能とする螢光体層点、長期耐久性を可能にする
保護層を設けた、Ｘ線画像変換シートに関する。The present invention relates to an X-ray image conversion sheet used in a digital X-ray image conversion system, and in particular to a laser diode (LD)
The present invention relates to an X-ray image conversion sheet provided with a phosphor layer point that enables excitation and a protective layer that enables long-term durability.
従来のＸ線画像変換スクリーンは、基板、螢光体層およ
び透明保護層から構成されている。基板材料としてカー
ボンブランクまたは二酸化チタンを含むプラスチックが
用いられ、螢光体層中の螢光体として輝尽励起スペクト
ルにおける輝尽発光強度ピークを５００〜７００ｎｍの
範囲に有するＢａＦＢｒ：Ｅｕ”等が用いられており、
このとき結合剤としてニトロセルロース、綿状ポリエス
テル、ポリアルキル（メタ）アクリレート、ニトロセル
ロースとポリアルキル（メタ）アクリレートとの混合物
等の有機系樹脂が用いられている。A conventional X-ray image conversion screen consists of a substrate, a phosphor layer and a transparent protective layer. A carbon blank or a plastic containing titanium dioxide is used as the substrate material, and BaFBr:Eu'', etc., which has a stimulated emission intensity peak in the stimulated excitation spectrum in the range of 500 to 700 nm, is used as the phosphor in the phosphor layer. has been
At this time, an organic resin such as nitrocellulose, cotton-like polyester, polyalkyl (meth)acrylate, or a mixture of nitrocellulose and polyalkyl (meth)acrylate is used as a binder.
また、特開昭６０−８４３８２によれば、透明保護層は
、例えば、酢酸セルロース、ニトロセルロース等のセル
ロース誘導体、あるいはポリメチルメタクリレート、ポ
リビニルブチラール、ポリビニルホルマール、ポリカー
ボネート、ポリ酢酸ビニル、塩化ビニル／酢酸ビニルコ
ポリマー等の合成高分子物質のような透明な高分子物質
を適当な溶剤に溶解して調製した溶液を螢光体層の表面
に塗布する方法により形成することができる。あるいは
ポリエチレンターフタレート、ポリエチレン、ポリ塩化
ビニリデン、ポリアミド等から別に形成した透明な薄膜
を螢光体層の表面に適当な接着剤を用いて接着するなど
の方法によっても形成することができる。このようにし
て形成する透明保護膜の膜厚は、約０．１〜２０μｍと
するのが望ましい。Further, according to JP-A No. 60-84382, the transparent protective layer is made of, for example, cellulose derivatives such as cellulose acetate or nitrocellulose, or polymethyl methacrylate, polyvinyl butyral, polyvinyl formal, polycarbonate, polyvinyl acetate, or vinyl chloride/acetic acid. It can be formed by coating the surface of the phosphor layer with a solution prepared by dissolving a transparent polymeric material such as a synthetic polymeric material such as a vinyl copolymer in a suitable solvent. Alternatively, it can also be formed by a method such as adhering a transparent thin film separately formed from polyethylene terphthalate, polyethylene, polyvinylidene chloride, polyamide, etc. to the surface of the phosphor layer using a suitable adhesive. The thickness of the transparent protective film formed in this manner is preferably about 0.1 to 20 μm.
従来のＸ線画像変換シートでは、特開昭５５−１２１４
５ 、特開昭６０−８４３８２に用いられている螢光体
、ＢａＦＢｒ：Ｅｕ”および１３ａｃｌＢｒ：Ｂ ｕ
２ ＋、の輝尽励起スペクトルにおける輝尽発光強度の
ピーク波長は５００〜７００ｎｍにあり、Ｘ線画像の信
号となる輝尽発光は約４００ｎｍにあるが、両者の波長
間隔が近いために、Ｘ線画像の信号に、この信号を読み
出すために用いた光源からの光がノイズとして入り込み
やすくなる。そのため、必然的にノイズカット用のフィ
ルタを用いることになるので、結果的に信号強度の低下
を招き、感度低下につながるといった問題があった。In the conventional X-ray image conversion sheet, JP-A-55-1214
5. Fluorescent materials used in JP-A-60-84382, BaFBr:Eu" and 13aclBr:Bu
The peak wavelength of stimulated emission intensity in the stimulated excitation spectrum of 2 Light from the light source used to read out the signal is likely to enter the line image signal as noise. Therefore, a noise cutting filter is inevitably used, which results in a reduction in signal strength, leading to a reduction in sensitivity.
また、従来の螢光体、ＢａＣｌＢｒ：Ｅｕ２＋およびＢ
ａＣｌＢｒ：Ｅｕ”、は湿気に弱く、そのため特開昭６
０−８４３８２においては、保護層としてプラスチック
フィルムを使用しているが、プラスチックフィルムは吸
湿性および透湿性が高いために、長期的な耐久性に乏し
いという問題があった。Also, conventional fluorophores, BaClBr:Eu2+ and B
aClBr:Eu” is sensitive to moisture, and therefore
In No. 0-84382, a plastic film is used as the protective layer, but since the plastic film has high hygroscopicity and moisture permeability, there was a problem in that it lacked long-term durability.
本発明は、従って、従来の技術における上述の如き問題
点を解消しようとするものである。The present invention therefore seeks to solve the above-mentioned problems in the prior art.
本発明によれば即ちＸ線画像変換シートが提供されるの
であって、このシートは、螢光体層の上面または画面に
、Ｓ ｉＯ２、Ｔ ＋ ０２、Ｉｎ５ｎＯ。According to the present invention, an X-ray image conversion sheet is provided, which has SiO2, T+02, In5nO on the top surface of the phosphor layer or screen.
ＳｎＯ２等の酸化物、Ａ Ｉ Ｆ３、ＡｇＦＸＣａＦ２
、ＣｄＦ３、Ｃ０Ｆ３、ＴｉＦ、、ＴｉＦ、、ＰｂＦ。Oxides such as SnO2, A I F3, AgFXCaF2
, CdF3, C0F3, TiF, , TiF, , PbF.
ＰｂＦ、、Ｂ ｉ Ｆ ３、ＢｉＦ、、ＭｇＦ２、Ｍｎ
Ｆ２等のフン化物およびＺｎＳ等の硫化物から選ばれる
少なくとも１種からなる蒸着膜を備え、前記螢光体層と
して、一般式ＭＸａＸ’２−．：ｂＡ。PbF, , B i F 3, BiF, , MgF2, Mn
The phosphor layer includes a vapor-deposited film made of at least one selected from fluorides such as F2 and sulfides such as ZnS, and has a general formula MXaX'2-. :bA.
１０−３Ｅｕ” （式中ＭはＣａ、ＳｒおよびＢａから
選ばれる少なくとも１種を表し、ＸおよびＸ′はそれぞ
れＣＩ、Ｂｒおよび■から選ばれる少なくとも１種を表
し、ＸとＸ′とは同一ではないものとし、ＡはＬ Ｉ
ＸＮ ａ ％ Ｋ ＳＲｂおよびＣｓから選ばれる少な
くとも１種を表し、ａは０．５≦ａ≦１．８の数を表し
、ｂは０≦ｂ≦１の数を表す）で示され、輝尽励起スペ
クトルにおける輝尽発光強度のピークが８００〜１１０
００ｎの範囲にある螢光体からなる層を含むことを特徴
とする。10-3Eu'' (in the formula, M represents at least one selected from Ca, Sr and Ba, X and X' each represent at least one selected from CI, Br and ■, and X and X' are the same , and A is L I
XN a % K represents at least one selected from SRb and Cs, a represents a number of 0.5≦a≦1.8, b represents a number of 0≦b≦1), The peak of stimulated emission intensity in the excitation spectrum is 800-110
It is characterized by comprising a layer consisting of a phosphor in the range of 00n.
上記の蒸着膜は、螢光体層の上面または両面に直接施す
ことによって適用されてもよく、あるいは蒸着をプラス
チックフィルム上に施して得られる蒸着膜担持フィルム
を螢光体層の上面または両面に貼付することによって適
用されてもよい。後者の場合には、フィルムの蒸着膜側
を螢光体層に対面せしめて貼付するのがよい。The vapor-deposited film described above may be applied by applying the vapor-deposited film directly to the top or both sides of the phosphor layer, or by applying the vapor-deposited film onto a plastic film and applying the resulting vapor-deposited film to the top or both sides of the phosphor layer. It may also be applied by pasting. In the latter case, it is preferable to attach the film with the vapor-deposited film side facing the phosphor layer.
本発明のＸ線画像変換シートにおいては、前記蒸着膜の
上面に有機ポリマーからなる保護コートまたは保護フィ
ルムを有していてもよい。かかる保護膜は、例えば、酢
酸セルロース、ニトロセルロース等のセルロース誘導体
、あるいはポリメチルメタクリレート、ポリビニルブチ
ラール、ポリビニルホルマール、ポリカーボネート、ポ
リ酢酸ビニル、塩化ビニル／酢酸ビニルコポリマー等の
合成高分子物質のような透明な高分子物質を適当な溶剤
に溶解して調製した溶液を蒸着膜の表面に塗布する方法
により形成することができる。あるいは、ポリエチレン
テレフタレート、ポリエチレン、ポリ塩化ビニリデン、
ポリアミド等から別に形成した透明な薄膜を蒸着膜の表
面に適当な接着剤を用いて接着するなどの方法によって
も形成することができる。このようにして形成する透明
保護膜の膜厚は、約０．１〜２０μｍとするのが望まし
い。The X-ray image conversion sheet of the present invention may have a protective coat or film made of an organic polymer on the upper surface of the deposited film. Such a protective film may be made of a transparent material such as a cellulose derivative such as cellulose acetate or nitrocellulose, or a synthetic polymeric material such as polymethyl methacrylate, polyvinyl butyral, polyvinyl formal, polycarbonate, polyvinyl acetate, or vinyl chloride/vinyl acetate copolymer. It can be formed by applying a solution prepared by dissolving a polymeric substance in an appropriate solvent onto the surface of the deposited film. Alternatively, polyethylene terephthalate, polyethylene, polyvinylidene chloride,
It can also be formed by a method such as adhering a transparent thin film separately formed from polyamide or the like to the surface of the deposited film using a suitable adhesive. The thickness of the transparent protective film formed in this manner is preferably about 0.1 to 20 μm.
基板材料としては、カーボンブラックまたは二酸化チタ
ンを含むプラスチックを用いることができる。このとき
、螢光体層を基板に接合させるために、結合剤としてニ
トロセルロース、綿状ポリエステル、ポリアルキル（メ
タ）アクリレート、ニトロセルロースとポリアルキル（
メタ）アクリレートとの混合物等の有機系樹脂を用いる
のがよい。As the substrate material, carbon black or plastic containing titanium dioxide can be used. At this time, in order to bond the phosphor layer to the substrate, nitrocellulose, cotton-like polyester, polyalkyl (meth)acrylate, nitrocellulose and polyalkyl (
It is preferable to use an organic resin such as a mixture with meth)acrylate.
本発明のＸ線画像変換シート中に存在する蒸着膜は、密
度が高く、通気性および透湿性および吸湿性が極めて小
さい。従って、本発明のＸ線画像変換シートは酸素ガス
や水蒸気の遮蔽に優れ、耐久性に優れたものとなる。The deposited film present in the X-ray image conversion sheet of the present invention has a high density and extremely low air permeability, moisture permeability, and hygroscopicity. Therefore, the X-ray image conversion sheet of the present invention has excellent shielding properties against oxygen gas and water vapor, and has excellent durability.
以下、実施例により本発明をさらに説明する。 The present invention will be further explained below with reference to Examples.
実施例１
輝尽励起スペクトルのピークが８００〜１１０００ｎに
あるＢ ａ ＣＩ Ｂ ｒ ： １Ｏ−２Ｋ”、 １
０−３Ｅ ｕ”１００ｇに、バインダとしてエポキシ樹
脂と硬化剤の総量５０ｇを加え、自公転型ボールミルを
用いて２時間混合分散させ、粘度６０ｐｓの塗布液を調
製した。Example 1 B a CI B r : 1O-2K", 1 whose photostimulation excitation spectrum has a peak at 800 to 11000n
A total of 50 g of an epoxy resin as a binder and a curing agent were added to 100 g of 0-3E u'', and the mixture was mixed and dispersed for 2 hours using a revolution-revolution ball mill to prepare a coating liquid with a viscosity of 60 ps.
前記塗布液をドクターブレード法により、厚さ２５０μ
ｍのカーボン練込みポリエチレンテレフタレートフィル
ムに塗布して、３００μｍの螢光体層を形成させた。The coating liquid was applied to a thickness of 250 μm using a doctor blade method.
A phosphor layer of 300 .mu.m was formed by coating a 300 .mu.m carbon-mixed polyethylene terephthalate film.
さらに、前記螢光体層の上面に、イオンスパッタ装置を
用いてＳ ｉ Ｏ２蒸着膜を０．１μｍの厚さで適用し
て保護層を形成させ、Ｘ線画像変換シートを作製した。Furthermore, a protective layer was formed by applying a SiO2 vapor-deposited film to a thickness of 0.1 μm on the upper surface of the phosphor layer using an ion sputtering device, thereby producing an X-ray image conversion sheet.
実施例２
Ｓｉ０２のかわりにＺｎＳを用いた以外は実施例２と全
く同様にして、Ｘ線画像変換シートを作製した。Example 2 An X-ray image conversion sheet was produced in the same manner as in Example 2 except that ZnS was used instead of Si02.
実施例３
Ｓｉ０２のかわりに１ｎ３ｎｏを用いた以外は実施例２
と全く同様にして、Ｘ線画像変換シートを作製した。Example 3 Example 2 except that 1n3no was used instead of Si02
An X-ray image conversion sheet was prepared in exactly the same manner as described above.
実施例４
ＳｉＯ２のかわりにＭ ｇ Ｆ ２を用いた以外は実雄
側２と全く同様にして、Ｘ線画像変換シートを作製した
。Example 4 An X-ray image conversion sheet was produced in the same manner as in Example 2 except that M g F 2 was used instead of SiO 2 .
実施例５
Ｓ ｉ ０２を蒸着させて保護層を形成せしめるかわり
に、５ｉ０２を０．１μｍの厚さで蒸着したポリエチレ
ンテレフタレートフィルム（厚さ７５μｍ）を保護層と
して適用した以外は、実施例１と同じ条件を用いること
により、Ｘ線画像変換シートを作製した。Example 5 Example 1 was repeated, except that instead of depositing S i 02 to form a protective layer, a polyethylene terephthalate film (75 μm thick) on which 5i02 was deposited to a thickness of 0.1 μm was used as the protective layer. An X-ray image conversion sheet was produced using the same conditions.
実施例６
Ｓｉ０２を蒸着させて保護層を形成せしめるかわりに、
ＺｎＳを０．１μｍの厚さで蒸着したポリエチレンテレ
フタレートフィルム（Ｈさ７５μｍ）を保護層として適
用した以外は、実施例１と同じ条件を用いることにより
、Ｘ線画像変換シートを作製した。Example 6 Instead of depositing Si02 to form a protective layer,
An X-ray image conversion sheet was produced by using the same conditions as in Example 1, except that a polyethylene terephthalate film (H 75 μm) on which ZnS was vapor-deposited to a thickness of 0.1 μm was used as a protective layer.
実施例７
Ｓｉ０２を蒸着させて保護層を形成せしめるかわりに、
Ｉｎ５ｎＯをＯ，１μｍの厚さで蒸着したポリエチレン
テレフタレートフィルム（厚さ７５μｍ）を保護層とし
て適用した以外は、実施例１と同じ条件を用いることに
より、Ｘ線画像変換シートを作製した。Example 7 Instead of depositing Si02 to form a protective layer,
An X-ray image conversion sheet was produced by using the same conditions as in Example 1, except that a polyethylene terephthalate film (75 μm thick) on which In5nO was vapor-deposited with a thickness of 1 μm was used as a protective layer.
実施例８
Ｓｉ０２を蒸着させて保護層を形成せしめるかわりに、
ＭｇＦ２を０．１μｍの厚さで蒸着したポリエチレンテ
レフタレートフィルム（厚さ７５μｍ）を保護層として
適用した以外は、実施例１と同じ条件を用いることによ
り、Ｘ線画像変換シートを作製した。Example 8 Instead of depositing Si02 to form a protective layer,
An X-ray image conversion sheet was produced using the same conditions as in Example 1, except that a polyethylene terephthalate film (75 μm thick) on which MgF2 was vapor-deposited to a thickness of 0.1 μm was used as a protective layer.
実施例１〜８で得られたＸ線画像変換シートについて、
それらの輝尽発光スペクトル図を第１図に、また輝尽励
起スペクトル図を第２図に示す。Regarding the X-ray image conversion sheets obtained in Examples 1 to 8,
Their stimulated emission spectra are shown in FIG. 1, and their photostimulated excitation spectra are shown in FIG.
また、本発明のＸ線画像変換シートと、保護層を備えな
いものおよび保護層として無着色ポリエチレンテレフタ
レートフィルム（厚さ７５μｍ）を用いたものとについ
て、耐久性加速試験を６０℃、９０％ＲＨで行って、輝
尽発光強度の経時変化をみた結果を第３図および第４図
に示す。第３図および第４図から判るように、蒸着膜を
保護層として有するシートは、長期的な耐久性を示した
。In addition, the X-ray image conversion sheet of the present invention, one without a protective layer, and one with an uncolored polyethylene terephthalate film (thickness 75 μm) as a protective layer were subjected to an accelerated durability test at 60°C and 90% RH. Figures 3 and 4 show the results of looking at changes in stimulated luminescence intensity over time. As can be seen from FIGS. 3 and 4, the sheet having the vapor-deposited film as a protective layer showed long-term durability.
これを４０℃、９０％ＲＨに換算すると、信号強度９０
％を維持する耐久寿命は約２年であった。Converting this to 40℃ and 90%RH, the signal strength is 90
% was maintained for approximately 2 years.
さらに、蒸着膜の防湿効果をみるために、実施例５〜８
で使用したフィルムと無蒸着フィルムの透湿度を、８５
℃、９０％ＲＨにおいて測定し、その結果を第５図に示
す。第５図から判るように、蒸着膜担持ポリエチレンテ
レフタレートフィルムは無蒸着フィルムに比較して防湿
性に優れていることがわかる。Furthermore, in order to examine the moisture-proofing effect of the vapor-deposited film, Examples 5 to 8
The moisture permeability of the film used in and the undeposited film was 85
The measurement was carried out at 90% RH and the results are shown in FIG. As can be seen from FIG. 5, the vapor-deposited polyethylene terephthalate film has superior moisture resistance compared to the non-deposited film.
尚、第３図〜第５図に示す数字は実施例番号に対応し、
９は蒸着保護層を有していないコントロールそして１０
は無蒸着ポリエチレンテレフタレートフィルムを用いた
コントロールに対する結果である。In addition, the numbers shown in FIGS. 3 to 5 correspond to the example numbers,
9 is a control without a deposited protective layer and 10
are the results for the control using undeposited polyethylene terephthalate film.
実施例９
螢光体としてＢａＣｌＢｒ ： １Ｏ−２Ｎａ”、１Ｏ
−３Ｅｕ”を用いた以外は、実施例１〜４と同様にして
Ｘ線画像変換シートを作製した。Example 9 BaClBr as phosphor: 1O-2Na'', 1O
X-ray image conversion sheets were produced in the same manner as in Examples 1 to 4, except that "-3Eu" was used.
得られたシートについて上記に述べたと同様にして耐久
性加速試験を行った。得られた結果を第６図に示す。The obtained sheet was subjected to an accelerated durability test in the same manner as described above. The results obtained are shown in FIG.
第６図から、４０℃、９０％ＲＨに換算したときの、信
号強度９０％を保持する耐久寿命は約２年であることが
認められた。From FIG. 6, it was confirmed that the durable life of maintaining 90% signal strength was about 2 years when converted to 40° C. and 90% RH.
実施例１０
螢光体としてＢａＣｌＢｒ ： １Ｏ−２Ｎａ”＋１Ｏ
−３Ｅｕ”を用いた以外は、実施例５〜８と同様にして
Ｘ線画像変換シートを作製した。Example 10 BaClBr as phosphor: 1O−2Na”+1O
X-ray image conversion sheets were produced in the same manner as in Examples 5 to 8, except that "-3Eu" was used.
得られたシートについて上記に述べたと同様にして耐久
性加速試験を行った。得られた結果を第７図に示す。The obtained sheet was subjected to an accelerated durability test in the same manner as described above. The results obtained are shown in FIG.
第７図から、４０°Ｃ１９０％ＲＨに換算したときの、
信号強度９０％を保持する耐久寿命は約２年であること
が認められた。From Figure 7, when converted to 40°C190%RH,
It was confirmed that the durable lifespan in which the signal strength was maintained at 90% was approximately 2 years.
尚、第６図および第７図に示す数字は、実施例９および
実施例１０で繰り返した実施例の数字に対応するもので
ある。It should be noted that the numbers shown in FIGS. 6 and 7 correspond to the numbers of the embodiments repeated in embodiments 9 and 10.
本発明によれば、保護層としての無機質蒸着膜を用いる
ことにより、長期間にわたり安定に、低被爆量で高鮮明
なＸ線画像を与えることのできるＸ線画像変換シートを
提供することができる。According to the present invention, by using an inorganic vapor-deposited film as a protective layer, it is possible to provide an X-ray image conversion sheet that can provide highly clear X-ray images stably over a long period of time with a low radiation dose. .
第１図は本発明にかかるＸ線画像変換シートの輝尽発光
スペクトル図、第２図はその輝尽励起スペクトル図、第
３図および第４図は耐久性加速試験において得られた相
対輝尽発光強度を示すグラフであり、第５図は相対吸湿
量を示すグラフ、第６図および第７図は耐久性加速試験
において得られた相対輝尽発光強度を示すグラフである
。Figure 1 is a photostimulated emission spectrum diagram of the X-ray image conversion sheet according to the present invention, Figure 2 is its photostimulation spectrum diagram, and Figures 3 and 4 are relative photostimulation spectra diagrams obtained in the accelerated durability test. FIG. 5 is a graph showing the relative moisture absorption amount, and FIGS. 6 and 7 are graphs showing the relative stimulated luminescence intensity obtained in the accelerated durability test.
Claims (1)
＿２、ＩｎＳｎＯ、ＳｎＯ＿２等の酸化物、ＡＩＦ＿３
、ＡｇＦ、ＣａＦ＿２、ＣｄＦ＿３、ＣｏＦ＿３、Ｔｉ
Ｆ＿３、ＴｉＦ＿６、ＰｂＦ＿６、ＰｂＦ＿２、ＢｉＦ
＿３、ＢｉＦ＿４、ＭｇＦ＿２、ＭｎＦ＿２等のフッ化
物およびＺｎＳ等の硫化物から選ばれる少なくとも１種
からなる蒸着膜を備え、前記螢光体層として、一般式Ｍ
ＸａＸ′＿２＿−＿ａ、：ｂＡ、１０＾−＾３Ｅｕ＾２
＾＋（式中ＭはＣａ、ＳｒおよびＢａから選ばれる少な
くとも１種を表し、ＸおよびＸ′はそれぞれＣｌ、Ｂｒ
およびＩから選ばれる少なくとも１種を表し、ＸとＸ′
とは同一ではないものとし、ＡはＬｉ、Ｎａ、Ｋ、Ｒｂ
およびＣｓから選ばれる少なくとも１種を表し、ａは０
．５≦ａ≦１．８の数を表し、ｂは０≦ｂ≦１の数を表
す）で示され、輝尽励起スペクトルにおける輝尽発光強
度のピークが８００〜１０００ｎｍの範囲にある螢光体
からなる層を含むことを特徴とするＸ線画像変換シート
。 ２、前記蒸着膜の上面に有機ポリマーからなる保護コー
トまたは保護フィルムを有する、特許請求の範囲第１項
記載のＸ線画像変換シート。[Claims] 1. On the top surface of the phosphor layer or screen, SiO_2, TiO
_2, oxides such as InSnO, SnO_2, AIF_3
, AgF, CaF_2, CdF_3, CoF_3, Ti
F_3, TiF_6, PbF_6, PbF_2, BiF
_3, BiF_4, MgF_2, MnF_2 and other fluorides, and ZnS and other sulfides.
XaX'_2_-_a, :bA, 10^-^3Eu^2
^+ (In the formula, M represents at least one selected from Ca, Sr and Ba, and X and X' are Cl and Br, respectively.
and I represents at least one species selected from X and X'
are not the same, and A is Li, Na, K, Rb
and Cs, and a is 0
．． 5≦a≦1.8, b represents a number 0≦b≦1), and the peak of stimulated emission intensity in the stimulated excitation spectrum is in the range of 800 to 1000 nm. An X-ray image conversion sheet comprising a layer consisting of. 2. The X-ray image conversion sheet according to claim 1, which has a protective coat or film made of an organic polymer on the upper surface of the vapor-deposited film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29351786A JPS63146980A (en) | 1986-12-11 | 1986-12-11 | X-ray image transformation sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29351786A JPS63146980A (en) | 1986-12-11 | 1986-12-11 | X-ray image transformation sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63146980A true JPS63146980A (en) | 1988-06-18 |
Family
ID=17795761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29351786A Pending JPS63146980A (en) | 1986-12-11 | 1986-12-11 | X-ray image transformation sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63146980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009294089A (en) * | 2008-06-05 | 2009-12-17 | Aloka Co Ltd | Radiation measuring device and its manufacturing method |
-
1986
- 1986-12-11 JP JP29351786A patent/JPS63146980A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009294089A (en) * | 2008-06-05 | 2009-12-17 | Aloka Co Ltd | Radiation measuring device and its manufacturing method |
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