JPWO2006049026A1 - 放射線画像変換パネル及びその製造方法 - Google Patents
放射線画像変換パネル及びその製造方法 Download PDFInfo
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- JPWO2006049026A1 JPWO2006049026A1 JP2006543122A JP2006543122A JPWO2006049026A1 JP WO2006049026 A1 JPWO2006049026 A1 JP WO2006049026A1 JP 2006543122 A JP2006543122 A JP 2006543122A JP 2006543122 A JP2006543122 A JP 2006543122A JP WO2006049026 A1 JPWO2006049026 A1 JP WO2006049026A1
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- image conversion
- radiation image
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Abstract
Description
(構成1)支持体上に輝尽性蛍光体層を有する放射線画像変換パネルにおいて、支持体と輝尽性蛍光体層との間にNCO基/メチル基の化学結合強度比が0.2〜2.0である架橋された下引き樹脂層を設ける放射線画像変換パネル。
(構成2)架橋剤が分子内に2個以上のNCO基を有する化合物である構成1に記載の放射線画像変換パネル。
(構成3)下引き樹脂の数平均分子量Mnが8万未満である構成1に記載の放射線画像変換パネル。
(構成4)前記輝尽性蛍光体層が下記一般式(1)で表される輝尽性蛍光体を含有する構成1〜3のいずれか1項に記載の放射線画像変換パネル。
(構成5)構成1〜4のいずれか1項に記載の放射線画像変換パネルの輝尽性蛍光体層が気相成長法(気相堆積法ともいう)により50μm〜1mmの膜厚を有するように形成される放射線画像変換パネルの製造方法。
(a)NaF、NaCl、NaBr、NaI、KF、KCl、KBr、KI、RbF、RbCl、RbBr、RbI、CsF、CsCl、CsBr及びCsIから選ばれる少なくとも1種もしくは2種以上の化合物が用いられる。
一般式(2)において、XはBrまたはIを表し、AはEu、In、TbまたはCeを表す。
(測定条件)
測定光の波長 :680nm
スキャンスピード :120nm/min
繰り返し回数 :10回
レスポンス :自動設定
白色顔料は輝尽発光も反射することができる。白色顔料として、TiO2(アナターゼ型、ルチル型)、MgO、PbCO3・Pb(OH)2、BaSO4、Al2O3、M(II)FX(但し、M(II)はBa、Sr及びCaの中の少なくとも一種であり、XはCl、及びBrのうちの少なくとも一種である。)、CaCO3、ZnO、Sb2O3、SiO2、ZrO2、リトポン(BaSO4・ZnS)、珪酸マグネシウム、塩基性珪硫酸塩、塩基性燐酸鉛、珪酸アルミニウムなどが挙げられる。これらの白色顔料は隠蔽力が強く、屈折率が大きいため、光を反射したり、屈折させることにより輝尽発光を容易に散乱し、得られる放射線画像変換パネルの感度を顕著に向上さることができる。
《放射線像変換パネルの作製》
(下引き樹脂層塗布液1〜5の調製)
ポリエステル樹脂(バイロン53SS、東洋紡績(株)社製、数平均分子量Mn=17000)と架橋剤として多官能イソシアネート化合物であるコロネート3041(日本ポリウレタン工業(株)製、トリレンジイソシアネート、分子内にNCO基2個含有)とを混合し、この混合物をメチルエチルケトン/トルエンの1/1混合溶媒に添加し、プロペラミキサーによって分散して下引き層塗布液1を調製した。
厚さ500μm、10cm四方のアルミ板支持体上に、上記調製した下引き層塗布液1〜5をそれぞれ乾燥膜厚が2μmとなるようナイフコーターを用いて塗布した後、表1に示す乾燥条件で乾燥し、下引き樹脂層塗布済み試料1〜5を作製した。
下引き樹脂層塗布済み試料1〜5上に、それぞれ図4に示した蒸着装置を用いて輝尽性蛍光体(CsBr:Eu)を有する輝尽性蛍光体層を形成した。図4に示した蒸着装置を使用し、アルミニウム製のスリットを用い、支持体とスリットとの距離dを60cmとして、上記ガラス支持体と平行な方向にガラス支持体を搬送しながら蒸着を行ない、輝尽性蛍光体層の厚みが300μmになるように調製した。
以上のようにして作製した各放射線画像変換パネルを用いて、以下の評価を行った。得られた結果を表1に示す。
下引き樹脂層を塗布、熱処理後の試料を、独立に23℃、55%RH及び20%RHの雰囲気下で3時間調湿した後の試料表面の目視によるひび割れ発生有無を下記のランクに従い評価した。
△:ひびのサイズが2mm以下のひび割れが発生
×:ひびのサイズが数cm以上のひび割れが発生
(輝尽性蛍光体層のひび割れ評価)
作製した放射線画像変換パネルを、独立に23℃、55%RH及び20%RHの雰囲気下で3時間調湿した後の試料表面の目視によるひび割れ発生有無を下記のランクに従い評価した。
△:ひびのサイズが2mm以下のひび割れが発生
×:ひびのサイズが数cm以上のひび割れが発生
Claims (8)
- 支持体上に輝尽性蛍光体層を有する放射線画像変換パネルにおいて、支持体と輝尽性蛍光体層との間にNCO基/メチル基の化学結合強度比が0.2〜2.0である架橋された下引き樹脂層を設けることを特徴とする放射線画像変換パネル。
- 架橋剤が分子内に2個以上のNCO基を有する化合物であることを特徴とする請求の範囲第1項に記載の放射線画像変換パネル。
- 下引き樹脂の数平均分子量Mnが8万未満であることを特徴とする請求の範囲第1項に記載の放射線画像変換パネル。
- 前記輝尽性蛍光体層が下記一般式(1)で表される輝尽性蛍光体を含有することを特徴とする請求の範囲第1項に記載の放射線画像変換パネル。
一般式(1) M1X・aM2X′・bM3X″:eA(式中、M1はLi、Na、K、Rb及びCsの各原子から選ばれる少なくとも1種のアルカリ金属原子であり、M2はBe、Mg、Ca、Sr、Ba、Zn、Cd、Cu及びNiの各原子から選ばれる少なくとも1種の二価金属原子であり、M3はSc、Y、La、Ce、Pr、Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb、Lu、Al、Ga及びInの各原子から選ばれる少なくとも1種の三価金属原子であり、X、X′、X″はF、Cl、Br及びIの各原子から選ばれる少なくとも1種のハロゲン原子であり、AはEu、Tb、In、Ce、Tm、Dy、Pr、Ho、Nd、Yb、Er、Gd、Lu、Sm、Y、Tl、Na、Ag、Cu及びMgの各原子から選ばれる少なくとも1種の金属原子であり、またa、b、eはそれぞれ0≦a<0.5、0≦b<0.5、0<e≦0.2の範囲の数値を表す。) - 請求の範囲第1項に記載の放射線画像変換パネルの輝尽性蛍光体層が気相成長法(気相堆積法ともいう)により50μm〜1mmの膜厚を有するように形成されることを特徴とする放射線画像変換パネルの製造方法。
- 請求の範囲第2項に記載の放射線画像変換パネルの輝尽性蛍光体層が気相成長法(気相堆積法ともいう)により50μm〜1mmの膜厚を有するように形成されることを特徴とする放射線画像変換パネルの製造方法。
- 請求の範囲第3項に記載の放射線画像変換パネルの輝尽性蛍光体層が気相成長法(気相堆積法ともいう)により50μm〜1mmの膜厚を有するように形成されることを特徴とする放射線画像変換パネルの製造方法。
- 請求の範囲第4項に記載の放射線画像変換パネルの輝尽性蛍光体層が気相成長法(気相堆積法ともいう)により50μm〜1mmの膜厚を有するように形成されることを特徴とする放射線画像変換パネルの製造方法。
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US8878135B2 (en) * | 2012-01-26 | 2014-11-04 | General Electric Company | Lithium based scintillators for neutron detection |
JP6354484B2 (ja) * | 2014-09-17 | 2018-07-11 | コニカミノルタ株式会社 | 放射線画像変換パネル |
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JPS6239737A (ja) * | 1985-08-16 | 1987-02-20 | Fujitsu Ltd | 温度レンジ設定方式 |
JPS62110200A (ja) * | 1985-11-07 | 1987-05-21 | コニカ株式会社 | 放射線画像変換パネルの製造方法 |
JPH0258000A (ja) * | 1988-05-27 | 1990-02-27 | Konica Corp | 放射線画像変換パネル及びその製造方法 |
JP2002277590A (ja) * | 2001-03-16 | 2002-09-25 | Konica Corp | 放射線像変換パネルおよびその製造方法 |
JP2002365398A (ja) * | 2001-06-12 | 2002-12-18 | Konica Corp | 放射線画像変換パネル |
JP2004170406A (ja) * | 2002-11-07 | 2004-06-17 | Fuji Photo Film Co Ltd | 放射線像変換パネルおよびその製造方法 |
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JP2004205460A (ja) * | 2002-12-26 | 2004-07-22 | Konica Minolta Holdings Inc | 放射線画像変換パネル及び放射線画像変換パネルの製造方法 |
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2005
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- 2005-10-24 JP JP2006543122A patent/JP4770737B2/ja not_active Expired - Fee Related
- 2005-10-24 CN CNA2005800375020A patent/CN101053042A/zh active Pending
- 2005-10-24 EP EP05795724A patent/EP1808865A1/en not_active Withdrawn
- 2005-10-24 US US11/718,199 patent/US20090250633A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6239737A (ja) * | 1985-08-16 | 1987-02-20 | Fujitsu Ltd | 温度レンジ設定方式 |
JPS62110200A (ja) * | 1985-11-07 | 1987-05-21 | コニカ株式会社 | 放射線画像変換パネルの製造方法 |
JPH0258000A (ja) * | 1988-05-27 | 1990-02-27 | Konica Corp | 放射線画像変換パネル及びその製造方法 |
JP2002277590A (ja) * | 2001-03-16 | 2002-09-25 | Konica Corp | 放射線像変換パネルおよびその製造方法 |
JP2002365398A (ja) * | 2001-06-12 | 2002-12-18 | Konica Corp | 放射線画像変換パネル |
JP2004170406A (ja) * | 2002-11-07 | 2004-06-17 | Fuji Photo Film Co Ltd | 放射線像変換パネルおよびその製造方法 |
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JP4770737B2 (ja) | 2011-09-14 |
WO2006049026A1 (ja) | 2006-05-11 |
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