JPS6131452B2 - - Google Patents
Info
- Publication number
- JPS6131452B2 JPS6131452B2 JP5505480A JP5505480A JPS6131452B2 JP S6131452 B2 JPS6131452 B2 JP S6131452B2 JP 5505480 A JP5505480 A JP 5505480A JP 5505480 A JP5505480 A JP 5505480A JP S6131452 B2 JPS6131452 B2 JP S6131452B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- ray
- holder
- film pack
- pack
- 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.)
- Expired
Links
- 230000001235 sensitizing effect Effects 0.000 claims description 24
- 239000011888 foil Substances 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 239000001856 Ethyl cellulose Substances 0.000 claims description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 2
- 108010010803 Gelatin Proteins 0.000 claims description 2
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920001249 ethyl cellulose Polymers 0.000 claims description 2
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 2
- 229920000159 gelatin Polymers 0.000 claims description 2
- 239000008273 gelatin Substances 0.000 claims description 2
- 235000019322 gelatine Nutrition 0.000 claims description 2
- 235000011852 gelatine desserts Nutrition 0.000 claims description 2
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 2
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 235000010981 methylcellulose Nutrition 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 2
- 229910000464 lead oxide Inorganic materials 0.000 claims 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 230000005855 radiation Effects 0.000 description 9
- 230000035945 sensitivity Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910004829 CaWO4 Inorganic materials 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C3/00—Packages of films for inserting into cameras, e.g. roll-films, film-packs; Wrapping materials for light-sensitive plates, films or papers, e.g. materials characterised by the use of special dyes, printing inks, adhesives
- G03C3/003—Individual packages for X-ray film, e.g. for dental applications
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Description
【発明の詳細な説明】
本発明は歯料口内法Ｘ線撮影に使用されるＸ線
フイルムパツク（以下、単に「フイルムパツク」
という）に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an X-ray film pack (hereinafter simply referred to as a "film pack") used for intraoral dental X-ray photography.
related to).
従来、歯の口内法撮影においては、遮光性のあ
る薄い紙の間にＸ線フイルムのみまたはＸ線フイ
ルムと鉛箔等の背後散乱線カツトのための金属箔
を挾み、これを例えば塩化ビニール等の柔軟な遮
光性材料からなる袋状のホルダー内に装填し、し
かる後ホルダーを密閉したフイルムパツクが使用
されている。撮影に際しては、このフイルムパツ
クを口内（歯の裏側）に挿入（金属箔を装填する
場合にはＸ線フイルムに関して線源の反対側に金
属箔が配置されるように配慮して挿入）し、フイ
ルムパツクを手で保持しながら歯の前方からＸ線
を照射する。このようにして撮影を行なつた後、
パツクを開封してＸ線フイルムを取出し現像を行
なう。 Conventionally, in intraoral photography of teeth, an X-ray film alone or an X-ray film and a metal foil such as lead foil for cutting back scattered radiation is sandwiched between thin sheets of light-shielding paper, and this is sandwiched between sheets of, for example, vinyl chloride. A film pack is used, which is loaded into a bag-shaped holder made of a flexible light-shielding material such as, and then the holder is sealed. When taking pictures, insert this film pack into the mouth (behind the teeth) (when loading metal foil, insert it with care so that the metal foil is placed on the opposite side of the X-ray film from the radiation source), X-rays are irradiated from the front of the tooth while holding the film pack in your hand. After shooting in this way,
The pack is opened and the X-ray film is taken out and developed.
しかしながら、上記従来の口内法Ｘ線撮影に用
いられるフイルムパツクはＸ線照射によつてＸ線
フイルムを直接感光させるものであるからＸ線に
対する感度が低く、従つて撮影に際しては照射線
量が多くなり、その結果患者の被曝線量が多くな
るという欠点を有していた。 However, the film packs used in conventional intraoral X-ray photography have low sensitivity to X-rays because they directly expose the X-ray film to X-rays, and therefore the exposure dose is high when taking images. However, as a result, the patient's radiation dose increases.
このような欠点に鑑みて、Ｘ線に対する感度を
高めるため螢光体層を有する増感シートをＸ線フ
イルムと共に、あるいはＸ線フイルムおよび金属
箔と共にホルダー内に封入したフイルムパツクが
提案されている。例えば特開昭52−60588号には
螢光体層を有する増感シートをＸ線フイルムに密
着（接着）させてホルダー内部に封入したフイル
ムパツクが開示されている。しかしながら、この
Ｘ線フイルムと増感シートを密着させてホルダー
内に封入してなるフイルムパツクの場合、Ｘ線に
対する感度は高くなるとは言うものの、Ｘ線撮影
を終えた後、暗室でパツクを開封し、Ｘ線フイル
ムを増感シートから剥離し、Ｘ線フイルムのみを
現像機に投入しなければならず、撮影からＸ線フ
イルムの現像までの操作が煩雑になる。また、た
とえＸ線フイルムと増感シートとが密着していな
い場合でも、やはり暗室中で撮影済みのフイルム
パツクを開封後Ｘ線フイルムと増感シートとをよ
り分け、Ｘ線フイルムのみを取出して現像機に投
入しなければならない。このようにＸ線フイルム
と共に増感シートをホルダー内に封入したフイル
ムパツクは撮影からＸ線フイルムの現像までの操
作が煩雑になるという欠点を有していた。 In view of these drawbacks, film packs have been proposed in which a sensitizing sheet having a phosphor layer is enclosed in a holder together with an X-ray film or an X-ray film and metal foil in order to increase the sensitivity to X-rays. . For example, Japanese Patent Application Laid-Open No. 52-60588 discloses a film pack in which a sensitizing sheet having a phosphor layer is closely attached (adhered) to an X-ray film and sealed inside a holder. However, in the case of a film pack in which the X-ray film and the intensifying sheet are placed in close contact with each other and sealed in a holder, although the sensitivity to X-rays is high, the pack is opened in a dark room after X-ray photography is completed. However, the X-ray film must be peeled off from the sensitizing sheet and only the X-ray film must be fed into the developing machine, making the operations from photographing to developing the X-ray film complicated. Even if the X-ray film and the intensifying sheet are not in close contact with each other, after opening the photographed film pack in a dark room, separate the X-ray film and the intensifying sheet and take out only the X-ray film. It must be put into the developing machine. A film pack in which a sensitizing sheet is enclosed in a holder together with an X-ray film has the disadvantage that operations from photographing to developing the X-ray film are complicated.
従つて、本発明はＸ線に対する感度が高く、し
かも撮影済みのＸ線フイルムの暗室における取扱
い操作が簡便なフイルムパツクを提供することを
目的とするものである。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a film pack which is highly sensitive to X-rays and which is easy to handle in a darkroom after X-ray film has been photographed.
上記目的は、柔軟な遮光性材料からなる袋状の
ホルダー内にＸ線フイルムを封入してなるフイル
ムパツクにおいて、該ホルダーの対向する内面の
一方側に結合剤と、この結合剤中に分散されたＸ
線用螢光体とからなる増感層が固定されて設けら
れており、上記ホルダーの対向する内面の他方側
には水溶性樹脂層が固定されて設けられているこ
とを特徴とするフイルムパツクによつて達成され
た。 The above object is to provide a film pack in which an X-ray film is enclosed in a bag-like holder made of a flexible light-shielding material. taX
A film pack characterized in that a sensitizing layer consisting of a linear phosphor is fixedly provided, and a water-soluble resin layer is fixedly provided on the other side of the opposing inner surface of the holder. achieved by.
本発明のフイルムパツクによれば、Ｘ線フイル
ムが封入されたホルダーの対向する内面の一方に
Ｘ線用螢光体を結合剤中に分散してなる増感層が
固定されて設けられているので、Ｘ線フイルムの
みをホルダー内に封入した従来のフイルムパツク
に比べて10〜20倍の感度が得られ、しかも、撮影
済みのフイルムパツクを開封した際Ｘ線フイルム
のみを取出せば良いから、増感シートをＸ線フイ
ルムと共にホルダー内に封入したフイルムパツク
に比べて、暗室での操作が簡単となる。 According to the film pack of the present invention, a sensitizing layer made of an X-ray phosphor dispersed in a binder is fixedly provided on one of the opposing inner surfaces of a holder in which an X-ray film is enclosed. Therefore, the sensitivity is 10 to 20 times higher than that of conventional film packs in which only the X-ray film is enclosed in the holder. Moreover, when opening the film pack that has already been photographed, only the X-ray film needs to be taken out. Compared to a film pack in which a sensitizing sheet is enclosed in a holder together with an X-ray film, it is easier to operate in a darkroom.
また、本発明のフイルムパツクは袋状のホルダ
ーの対向する内面の一方に増感層を、他方に水溶
性樹脂が固定されて設けられているので、長時間
放置した場合のカブリが少なくなる上、現像液を
注入して現像する場合には現像速度を促進すると
いう効果がある。 In addition, since the film pack of the present invention has a sensitizing layer fixed on one side of the opposing inner surfaces of the bag-like holder and a water-soluble resin fixed on the other side, fogging is reduced when left for a long time. When developing by injecting a developer, there is an effect of accelerating the development speed.
以下、本発明の実施例について図面を参照して
詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本発明のフイルムパツクの一実施例の
正面図であり、第２図は第１図のＡ−A′線に沿
つた横断面図である。１はＸ線フイルム３が封入
された袋状のホルダーであり、このホルダー１は
例えば塩化ビニールシート等の柔軟な遮光性材料
で作られている。遮光性をより完全にするため、
ホルダー１はその内側を黒色に、外側を白色に着
色するのが効果的であり、例えば黒色塩化ビニー
ルシートと白色塩化ビニールシートとを熱ラミネ
ートし、黒色塩化ビニールがホルダー１の内面と
なるように配するのがより好ましい。ホルダー１
はその内面に背後散乱線をカツトするための鉛箔
等の金属箔４およびＸ線用螢光体を結合剤中に分
散してなる増感層２がこの順に固定されて設けら
れたホルダー後面部材１ａ（撮影時にＸ線源から
遠い側に配置される）と、ホルダー後面部材１ａ
と同じ部材からなり同一形状を有するホルダー前
面部材１ｂ（撮影時にＸ線源に近い側に配置され
る）とからなる。ホルダー後面部材１ａおよびホ
ルダー前面部材１ｂはその間にＸ線フイルム３を
挾持した状態でその周囲が融着され、ホルダー１
とされる。 FIG. 1 is a front view of an embodiment of the film pack of the present invention, and FIG. 2 is a cross-sectional view taken along line A--A' in FIG. Reference numeral 1 denotes a bag-shaped holder in which an X-ray film 3 is enclosed, and this holder 1 is made of a flexible light-shielding material such as a vinyl chloride sheet. In order to achieve more complete light blocking,
It is effective to color the holder 1 black on the inside and white on the outside. For example, a black vinyl chloride sheet and a white vinyl chloride sheet are heat laminated so that the black vinyl chloride becomes the inner surface of the holder 1. It is more preferable to Holder 1
is the rear surface of the holder on which a metal foil 4 such as lead foil for cutting back scattered radiation and a sensitizing layer 2 made of an X-ray phosphor dispersed in a binder are fixed in this order. Member 1a (placed on the side far from the X-ray source during imaging) and holder rear member 1a
and a holder front member 1b (disposed on the side closer to the X-ray source at the time of imaging), which is made of the same material and has the same shape. The peripheries of the holder rear member 1a and the holder front member 1b are fused together with the X-ray film 3 sandwiched therebetween, and the holder 1
It is said that
その横断面図が第２図に示される本発明のフイ
ルムパツクを製造するには、先ずホルダー後面部
材１ａの片側表面にＸ線フイルム３よりやや大き
目の厚さが0.1〜0.3mmの鉛箔等の金属箔４を貼付
した後、その上にＸ線用螢光体を結合剤中に分散
させた螢光体塗布液を塗布し、乾燥させて増感層
２を形成する。例えば30mm×40mmの大きさのＸ線
フイルム３を収納するフイルムパツクの場合に
は、金属箔４とＸ線フイルム３を重ねた場合、Ｘ
線フイルム３の周囲から１〜1.5mm程度金属箔が
現われるよう少なくとも32mm×42mmの大きさの矩
形状の金属箔４をホルダー後面部材１ａの片面に
貼付すれば良い。金属箔４は撮影時に発生する背
後散乱線がＸ線フイルム３に入射するとＸ線写真
の鮮鋭度が低下するのでこれを防止するために設
けられるものであるが、本発明のフイルムパツク
に必須のものではなく、場合によつては設けなく
ても良い。また、金属箔４を設ける代わりに酸化
鉛（PbO）等のＸ線吸収性物質を含ませたシート
をホルダー後面部材１ａとして用い、この片面上
に上記と同様にして増感層２を形成してもよい。 To manufacture the film pack of the present invention, the cross-sectional view of which is shown in FIG. After pasting the metal foil 4, a phosphor coating liquid in which an X-ray phosphor is dispersed in a binder is applied thereon and dried to form a sensitizing layer 2. For example, in the case of a film pack that stores an X-ray film 3 with a size of 30 mm x 40 mm, if the metal foil 4 and the X-ray film 3 are overlapped,
A rectangular metal foil 4 having a size of at least 32 mm x 42 mm may be attached to one side of the holder rear member 1a so that the metal foil appears about 1 to 1.5 mm from the periphery of the wire film 3. The metal foil 4 is provided to prevent the sharpness of the X-ray photograph from decreasing when backscattered radiation generated during imaging enters the X-ray film 3, and is essential to the film pack of the present invention. It is not necessary and may not be provided in some cases. Furthermore, instead of providing the metal foil 4, a sheet impregnated with an X-ray absorbing substance such as lead oxide (PbO) is used as the holder rear member 1a, and the sensitizing layer 2 is formed on one side thereof in the same manner as above. It's okay.
本発明のフイルムパツクにおいて増感層２を形
成するために用いられるＸ線用螢光体としてはＸ
線等の放射線励起により高輝度の発光を示す
CaWO4、ZnS：Ag、BaSO4：Pb、Y2O2S：Tb、
Gd2O2S：Tb、BaFCl：Eu等が用いられる。Ｘ線
写真の鮮鋭度を高めるためにはＸ線用螢光体は２
μ以下の小粒子径のものを用いるのが好ましい。
一方、結合剤としては硝化綿、塩化ビニル−酢酸
ビニル共重合体、ポリビニルブチラール等の放射
線増感紙の結合剤として一般に用いられる樹脂を
用いても良いが、放射線増感紙の結合剤としては
一般に用いられないポリビニルアルコール、ヒド
ロキシプロピルセルロース、ゼラチン、メチルセ
ルロース、エチルセルロース、ポリビニルピロリ
ドン等の水溶性樹脂を用いるのがより好ましい。
これはその理由は明確ではないが、一般に水溶性
樹脂を結合剤として用いた場合、Ｘ線フイルム３
を収納したフイルムパツクを長期間放置した場合
にＸ線フイルム３のカブリが少ないためである。 The X-ray phosphor used to form the sensitized layer 2 in the film pack of the present invention is
Shows high-intensity light emission when excited by radiation such as lines
CaWO4 , ZnS:Ag, BaSO4 :Pb, Y2O2S : Tb,
Gd 2 O 2 S:Tb, BaFCl:Eu, etc. are used. In order to improve the sharpness of X-ray photographs, the X-ray phosphor must be
It is preferable to use particles with a small particle size of μ or less.
On the other hand, as a binder, resins commonly used as binders for radiation intensifying screens, such as nitrified cotton, vinyl chloride-vinyl acetate copolymer, and polyvinyl butyral, may be used. It is more preferable to use water-soluble resins that are not commonly used, such as polyvinyl alcohol, hydroxypropylcellulose, gelatin, methylcellulose, ethylcellulose, and polyvinylpyrrolidone.
The reason for this is not clear, but generally speaking, when a water-soluble resin is used as a binder,
This is because there is less fogging on the X-ray film 3 when the film pack containing the X-ray film 3 is left for a long period of time.
前記記Ｘ線用螢光体と結合剤とをポールミルで
充分に混合して調合した螢光体塗布液を、金属箔
４が予じめ貼付されたホルダー後面部材１ａの該
金属箔４上の全面にシルクスクリーン印刷法等に
より塗布し、乾燥させて増感層２を形成する。な
お、一般に螢光体塗布液には適当な溶剤が適当量
添加され、その粘度が調整される。金属箔４が設
けられない場合には、封入されるＸ線フイルム３
の大きさ及び形状に合わせて、該フイルム３より
少し広く、矩形状に直接ホルダー後面部材１ａの
片面に螢光体塗布液を塗布して増感層２を形成す
る。増感層２の乾燥後の塗布重量が約35mg/cm2ま
では塗布重量が増えると共に、得られるフイルム
パツクのＸ線に対する感度は増大してゆくが、塗
布重量を35mg/cm2以上に増やしてもＸ線に対する
感度はほとんど増大しない。従つて、増感層２は
35mg/cm2までの塗布重量で形成すれば良い。ホル
ダー前面部材１ｂはホルダー後面部材１ｂと同じ
材料からなる。しかしながら、ホルダー後面部材
１ａとは異なりホルダ前面部材１ｂはＸ線吸収の
大きいものは好ましくない。従つて、先に述べた
ように、金属箔４が用いられずその代りにホルダ
ー後面部材１ａとして例えばPbO等のＸ線吸収性
物質を含むＸ線吸収の大きい材料が用いられる場
合には、ホルダー前面部材１ｂとしてホルダー後
面部材１ａとは別のＸ線吸収の比較的少ない材料
が用いられる。ホルダー前面部材１ｂの片方の表
面には増感層の結合剤として用いられるのが好ま
しい、先に述べたような水溶性樹脂を数10μの膜
厚で塗布し、乾燥させることによつて、水溶性樹
脂層が形成される。 A phosphor coating liquid prepared by thoroughly mixing the X-ray phosphor and a binder in a pole mill is applied onto the metal foil 4 of the holder rear member 1a to which the metal foil 4 has been attached in advance. The sensitized layer 2 is formed by coating the entire surface by silk screen printing or the like and drying it. Generally, an appropriate amount of a suitable solvent is added to the phosphor coating liquid to adjust its viscosity. If the metal foil 4 is not provided, the enclosed X-ray film 3
The sensitizing layer 2 is formed by directly coating one side of the holder rear member 1a with a phosphor coating liquid in a rectangular shape slightly wider than the film 3 in accordance with the size and shape of the film 3. As the coating weight increases until the coating weight after drying of the sensitizing layer 2 reaches approximately 35mg/cm 2 , the sensitivity of the resulting film pack to X-rays increases; however, when the coating weight is increased to 35mg/cm 2 or more However, sensitivity to X-rays hardly increases. Therefore, the sensitizing layer 2 is
It may be formed with a coating weight of up to 35 mg/cm 2 . The holder front member 1b is made of the same material as the holder rear member 1b. However, unlike the holder rear member 1a, it is not preferable that the holder front member 1b has high X-ray absorption. Therefore, as mentioned above, when the metal foil 4 is not used and instead a material with high X-ray absorption including an X-ray absorbing substance such as PbO is used as the holder rear member 1a, the holder As the front member 1b, a material different from that of the holder rear member 1a and having relatively low X-ray absorption is used. One surface of the holder front member 1b is coated with the water-soluble resin described above, which is preferably used as a binder for the sensitized layer, in a film thickness of several tens of microns, and dried. A synthetic resin layer is formed.
次に、ホルダー後面部材１ａに設けられた増感
層２の表面とホルダー前面部材１ｂに設けられた
水溶性樹脂層５との間にＸ線フイルム３を挾持し
た状態でホルダー１のＢ−B′線および他の３辺を
高周波ウエルダー、超音波ウエルダーを用いて融
着し、Ｘ線フイルム３が封入されたフイルムパツ
クとするか、あるいはホルダー前面部材１ｂとホ
ルダー後面部材１ａとを重ねて蓋部６を有する辺
を除く他の３辺を予じめ融着した後、蓋部６を有
する辺の開口部７からＸ線フイルム３を挿入し、
しかる後Ｂ−B′線に沿つて開口部７を融着するこ
とによつてＸ線フイルム３をホルダー１内に封入
し、本発明のフイルムパツクを得る。 Next, with the X-ray film 3 sandwiched between the surface of the sensitizing layer 2 provided on the holder rear member 1a and the water-soluble resin layer 5 provided on the holder front member 1b, ' ray and the other three sides are fused using a high frequency welder or an ultrasonic welder to form a film pack containing the X-ray film 3, or the holder front member 1b and the holder rear member 1a are overlapped and the lid is closed. After the other three sides except the side having the lid part 6 are fused in advance, the X-ray film 3 is inserted through the opening 7 of the side having the lid part 6,
Thereafter, the X-ray film 3 is sealed in the holder 1 by welding the opening 7 along the line B-B' to obtain the film pack of the present invention.
Ｘ線撮影を行なう場合は従来のフイルムパツク
と同様にホルダー前面部材１ｂ側を線源側に向け
て口内（歯の裏側）に挿入し、手でフイルムパツ
クを支えて撮影を行なう。撮影後、フイルムパツ
クの蓋部６を前後方向に強く引張つてフイルムパ
ツクの一部を裂いてＸ線フイルム３を取出し、現
像を行なう。増感層を内面に有するホルダー１は
廃棄される。第３図は第１図のフイルムパツクの
蓋部６を裂いて開封した時の側面図を示したもの
である。このようにホルダー１の対向する内面の
一方に水溶性樹脂層を設けておくと、フイルムパ
ツクを長期間放置した場合、Ｘ線フイルムのカブ
リが少なくなるので好ましい。また、撮影済みの
フイルムパツクを開封することなく注射器等で現
像液をフイルムパツク内に注入し、フイルムパツ
クを外から手で揉んで、現像液をフイルムパツク
内に拡散させ、これによつて現像液とＸ線フイル
ムとの接触を充分に行ない、フイルムパツク内で
撮影済みのＸ線フイルムの現像を行なう方法も広
く利用されているが、ホルダー１の対向する内面
の一方に水溶性樹脂層を設けたり、増感層の結合
剤として水溶性樹脂を用いた場合には、Ｘ線フイ
ルムと直接接しているこれらの水溶性樹脂が注入
された現像液を迅速に吸収し容易に湿潤するた
め、現像液が一様にＸ線フイルムと接触すること
となり、現像速度が促進される。 When performing X-ray photography, the holder is inserted into the mouth (behind the teeth) with the front member 1b of the holder facing toward the radiation source, and the film pack is supported with the hand to take the image, as in the case of conventional film packs. After photographing, the lid 6 of the film pack is strongly pulled in the front-back direction to tear a part of the film pack, and the X-ray film 3 is taken out and developed. The holder 1 having the sensitizing layer on its inner surface is discarded. FIG. 3 shows a side view of the film pack shown in FIG. 1 when the lid 6 is torn open. Providing a water-soluble resin layer on one of the opposing inner surfaces of the holder 1 in this manner is preferable because fogging of the X-ray film is reduced when the film pack is left for a long period of time. Alternatively, without opening the photographed film pack, a developer is injected into the film pack using a syringe or the like, and the film pack is rubbed with hands from the outside to diffuse the developer into the film pack, thereby allowing the film to be developed. A method in which the exposed X-ray film is developed within the film pack by sufficiently contacting the liquid with the X-ray film is also widely used. When a water-soluble resin is used as a binder for the sensitized layer, these water-soluble resins that are in direct contact with the X-ray film quickly absorb the injected developer and easily wet the injected developer. The developer comes into uniform contact with the X-ray film, and the development speed is accelerated.
本発明のフイルムパツクは袋状のホルダーの対
向する内面の一方にＸ線用螢光体を結合剤中に分
散してなる増感層を有しており、ホルダー自身が
増感機能を備えているので、増感シートが封入さ
れていない従来のフイルムパツクに比べてＸ線に
対する感度が約10〜20倍向上し、従つて被検者
（患者）の被曝線量を大巾に低減することができ
る。また、本発明のフイルムパツクは、フイルム
パツクを開封した際Ｘ線フイルムだけが出てくる
ので、増感シートが封入されたフイルムパツクに
比較して、撮影済みフイルムの取出しから現像に
いたる作業を暗室においても簡便に行うことがで
きる。さらに、本発明のフイルムパツクは増感層
の結合剤として水溶性樹脂を用いたり、ホルダー
の対向する内面の増感層が設けられない方の内面
に水溶性樹脂層を設けることによつて、フイルム
パツクを長期間放置しておいた場合のＸ線フイル
ムのカブリを少なくすることができる等の利点を
有し、その工業的利用価値は大きい。 The film pack of the present invention has a sensitizing layer formed by dispersing an X-ray phosphor in a binder on one of the opposing inner surfaces of a bag-shaped holder, and the holder itself has a sensitizing function. As a result, the sensitivity to X-rays is improved by approximately 10 to 20 times compared to conventional film packs that do not contain a sensitizing sheet, and therefore the radiation dose to the examinee (patient) can be significantly reduced. can. In addition, the film pack of the present invention allows only the X-ray film to come out when the film pack is opened, so compared to a film pack in which a sensitizing sheet is enclosed, the work from taking out the photographed film to developing it is easier. It can be easily performed even in a dark room. Furthermore, the film pack of the present invention can be produced by using a water-soluble resin as a binder for the sensitized layer, or by providing a water-soluble resin layer on the opposite inner surface of the holder where the sensitized layer is not provided. It has advantages such as being able to reduce fogging of X-ray film when the film pack is left for a long period of time, and has great industrial utility value.
第１図は本発明のフイルムパツクの一実施例の
正面図、第２図は第１図のフイルムパツクの横断
面図、および第３図は第１図のフイルムパツクの
蓋部を開封した状態を示す側面図である。
１……ホルダー、２……増感層、３……Ｘ線フ
イルム、４……金属箔、５……水溶性樹脂層。
FIG. 1 is a front view of an embodiment of the film package of the present invention, FIG. 2 is a cross-sectional view of the film package shown in FIG. 1, and FIG. 3 is a state in which the lid of the film package shown in FIG. 1 is opened. FIG. DESCRIPTION OF SYMBOLS 1... Holder, 2... Sensitizing layer, 3... X-ray film, 4... Metal foil, 5... Water-soluble resin layer.
Claims (1)
にＸ線フイルムを封入してなる歯料口内法Ｘ線撮
影用フイルムパツクにおいて、上記ホルダーの対
向する内面の一方側に、結合剤とこの結合剤中に
分散されたＸ線用螢光体とからなる増感層が固定
されて設けられており、上記ホルダーの対向する
内面の他方側には水溶性樹脂が固定されて設けら
れていることを特徴とするフイルムパツク。 ２ 上記結合剤が水溶性樹脂からなることを特徴
とする特許請求の範囲第１項記載のフイルムパツ
ク。 ３ 上記水溶性樹脂がポリビニルアルコール、ヒ
ドロキシプロピルセルロース、ゼラチン、メチル
セルロース、エチルセルロースおよびポリビニル
ピロリドンのうちの少なくとも１種であることを
特徴とする特許請求の範囲第２項記載のフイルム
パツク。 ４ 上記増感層が金属箔を介して上記対向する内
面の一方側に固定されて設けられていることを特
徴とする特許請求の範囲第１項、第２項または第
３項記載のフイルムパツク。 ５ 上記金属箔が鉛箔であることを特徴とする特
許請求の範囲第４項記載のフイルムパツク。 ６ 上記ホルダーの上記増感層が固定されて設け
られている側がＸ線吸収物質を含む材料からなる
ことを特徴とする特許請求の範囲第４項記載のフ
イルムパツク。 ７ 上記材料が上記Ｘ線吸収性物質として酸化鉛
を含む塩化ビニールであることを特徴とする特許
請求の範囲第６項記載のフイルムパツク。[Scope of Claims] 1. In a film pack for dental intraoral X-ray photography, which is formed by enclosing an X-ray film in a bag-like holder made of a flexible light-shielding material, on one side of the opposing inner surface of the holder. A sensitizing layer consisting of a binder and an X-ray phosphor dispersed in the binder is fixedly provided, and a water-soluble resin is fixed to the other side of the opposing inner surface of the holder. A film pack characterized in that it is provided with: 2. The film pack according to claim 1, wherein the binder is made of a water-soluble resin. 3. The film pack according to claim 2, wherein the water-soluble resin is at least one of polyvinyl alcohol, hydroxypropylcellulose, gelatin, methylcellulose, ethylcellulose, and polyvinylpyrrolidone. 4. The film pack according to claim 1, 2 or 3, wherein the sensitizing layer is fixed to one side of the opposing inner surfaces via a metal foil. . 5. The film pack according to claim 4, wherein the metal foil is lead foil. 6. The film pack according to claim 4, wherein the side of the holder on which the sensitizing layer is fixedly provided is made of a material containing an X-ray absorbing substance. 7. The film pack according to claim 6, wherein the material is vinyl chloride containing lead oxide as the X-ray absorbing substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5505480A JPS56151930A (en) | 1980-04-25 | 1980-04-25 | Film pack for dental intraoral roentgenography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5505480A JPS56151930A (en) | 1980-04-25 | 1980-04-25 | Film pack for dental intraoral roentgenography |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56151930A JPS56151930A (en) | 1981-11-25 |
| JPS6131452B2 true JPS6131452B2 (en) | 1986-07-21 |
Family
ID=12987959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5505480A Granted JPS56151930A (en) | 1980-04-25 | 1980-04-25 | Film pack for dental intraoral roentgenography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56151930A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953356U (en) * | 1982-09-30 | 1984-04-07 | 化成オプトニクス株式会社 | Film pack for dental intraoral X-ray photography |
| FR2574972B1 (en) * | 1984-12-18 | 1987-03-27 | Thioulouse Pascal | MEMORY EFFECT DISPLAY DEVICE COMPRISING LIGHT-EMITTING AND PHOTOCONDUCTIVE LAYERS |
| JPH0410596Y2 (en) * | 1986-06-17 | 1992-03-16 |
-
1980
- 1980-04-25 JP JP5505480A patent/JPS56151930A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56151930A (en) | 1981-11-25 |
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