JPH05343005A - Cathode-ray tube device - Google Patents
Cathode-ray tube deviceInfo
- Publication number
- JPH05343005A JPH05343005A JP15029292A JP15029292A JPH05343005A JP H05343005 A JPH05343005 A JP H05343005A JP 15029292 A JP15029292 A JP 15029292A JP 15029292 A JP15029292 A JP 15029292A JP H05343005 A JPH05343005 A JP H05343005A
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- deflection yoke
- tube device
- cathode ray
- electric field
- 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
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子銃から射出する電
子ビームの偏向を電磁偏向方式にて行う陰極線管装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cathode ray tube device for deflecting an electron beam emitted from an electron gun by an electromagnetic deflection method.
【０００２】[0002]
【従来の技術】図４は、従来の陰極線管装置の構成を示
す側面図である。図示の如く陰極線管装置は、細径の円
筒形をなすネック部1aの先端側に矩形筒形をなす本体部
1cを、断面形状を除々に変えつつコーン状に拡幅された
コーン部1bを介して連設してなり、全体として漏斗形の
側面形状を有するファンネル部１と、前記本体部1cの先
端側の開口に、これの全面を覆ってフリット封止された
フェースパネル２と、前記ネック部1aの基端に封止され
た電子銃３とを備え、更に、ネック部1aとコーン部1bと
の連結部位の外側に周設され、ネック部1a及びコーン部
1bを夫々適宜長さに亘って囲繞する偏向ヨーク４を備え
てなる。2. Description of the Related Art FIG. 4 is a side view showing the structure of a conventional cathode ray tube device. As shown in the figure, the cathode ray tube device has a rectangular cylindrical main body portion on the tip side of a neck portion 1a having a small diameter cylindrical shape.
1c is continuously connected via a cone portion 1b that is widened in a cone shape while gradually changing the cross-sectional shape, and a funnel portion 1 having a funnel-shaped side surface as a whole and a tip side of the main body portion 1c. The opening is provided with a face panel 2 which is covered with a frit to cover the entire surface of the opening, and an electron gun 3 which is sealed at the base end of the neck portion 1a, and is further connected to the neck portion 1a and the cone portion 1b. Surrounded on the outside of the part, the neck part 1a and the cone part
A deflection yoke 4 is provided, which surrounds each 1b over an appropriate length.
【０００３】本体部1cの外表面には、ファンネル部１に
アノード電圧を印加するためのアノード電極５が、その
周囲を絶縁体膜６により囲んで形成してあり、また、フ
ァンネル部１に静電容量を付加するための導電膜７が、
前記絶縁体膜６の形成範囲を除く略全周に亘って形成し
てある。更に前記フェースパネル２の外側には、本体部
1cへの封止部位における防爆性を保証するための防爆バ
ンド20が巻着され、またフェースパネル２の外側の４隅
には、図示しない外箱への取付けのためのブラケット2
1，21…（２つのみ図示）が突設されている。An anode electrode 5 for applying an anode voltage to the funnel portion 1 is formed on the outer surface of the main body portion 1c by surrounding it with an insulating film 6, and the funnel portion 1 is provided with a static electricity. The conductive film 7 for adding capacitance is
The insulating film 6 is formed over substantially the entire circumference excluding the forming range. Further, on the outside of the face panel 2, a main body portion is provided.
Explosion-proof bands 20 for assuring the explosion-proof property at the sealing portion to 1c are wound, and brackets 2 for attaching to an outer box (not shown) are provided at four outer corners of the face panel 2.
1, 21, ... (Only two shown) are projected.
【０００４】以上の如く構成された陰極線管装置は、ネ
ック部1aの中心線に沿って電子銃３が射出する電子ビー
ムを、ネック部1aとコーン部1bとの連結部位に偏向ヨー
ク４により形成される磁界の作用により水平及び垂直方
向に夫々偏向し、コーン部1b及び本体部1cの内側を経て
フェースパネル２内側の蛍光面上に走査せしめる動作を
なし、この走査に伴ってフェースパネル２の前面に画像
が形成される。In the cathode ray tube device configured as described above, the deflection yoke 4 forms an electron beam emitted by the electron gun 3 along the center line of the neck portion 1a at the connecting portion between the neck portion 1a and the cone portion 1b. Due to the action of the magnetic field generated, the light is deflected in the horizontal and vertical directions, respectively, and the fluorescent surface inside the face panel 2 is scanned through the inside of the cone portion 1b and the main body portion 1c. An image is formed on the front surface.
【０００５】図５は、偏向ヨーク４の模式的な横断面図
である。本図に示す如く偏向ヨーク４は、ネック部1aの
外側を同心的に囲繞する円筒形をなすフェライトコア4a
の内側に、共にネック部1aの軸心を挾んで相対向する各
一対の垂直偏向コイル4b，4bと水平偏向コイル4c，4cと
を、互いに直交する態様にて巻回保持せしめた構成とな
っており、図１に示す如く、長手方向の一側に設けた固
定治具40によりネック部1aの外周に固定され、前述した
如く位置決めされている。FIG. 5 is a schematic cross-sectional view of the deflection yoke 4. As shown in the figure, the deflection yoke 4 has a cylindrical ferrite core 4a that concentrically surrounds the outside of the neck portion 1a.
A pair of vertical deflection coils 4b and 4b and horizontal deflection coils 4c and 4c, which face each other across the axis of the neck portion 1a, are wound inside and held in a manner orthogonal to each other. As shown in FIG. 1, it is fixed to the outer periphery of the neck portion 1a by a fixing jig 40 provided on one side in the longitudinal direction and positioned as described above.
【０００６】而して、ネック部1aの軸心上を進行する電
子ビームＢは、垂直偏向コイル4b，4bへの通電によりネ
ック部1a内に形成される磁界の作用により垂直方向（図
の上下方向）に、また水平偏向コイル4c，4cへの通電に
よりネック部1a内に形成される磁界の作用により水平方
向（図の左右方向）に偏向される。なお、水平及び垂直
方向の偏向による前記蛍光面上での振れ幅は、アノード
電極５への印加電圧の平方根に反比例するから、この印
加電圧の調節によりフェースパネル２上での画像調整が
可能である。The electron beam B traveling on the axial center of the neck portion 1a is vertically (upper and lower in the figure) by the action of the magnetic field formed in the neck portion 1a when the vertical deflection coils 4b and 4b are energized. Direction), and by the action of the magnetic field formed in the neck portion 1a by energizing the horizontal deflection coils 4c, 4c, it is deflected in the horizontal direction (left-right direction in the figure). Since the swing width on the phosphor screen due to the horizontal and vertical deflection is inversely proportional to the square root of the voltage applied to the anode electrode 5, it is possible to adjust the image on the face panel 2 by adjusting the applied voltage. is there.
【０００７】[0007]
【発明が解決しようとする課題】さて以上の如き陰極線
管装置においては、電子銃３から射出される電子ビーム
の偏向に際し、垂直偏向コイル4b，4b及び水平偏向コイ
ル4c，4cへの通電に伴って、偏向ヨーク４の中心、即
ち、ファンネル部１の中心周りに放射状をなして交番電
界が生じる。In the cathode ray tube apparatus as described above, when the electron beam emitted from the electron gun 3 is deflected, the vertical deflection coils 4b and 4b and the horizontal deflection coils 4c and 4c are energized. As a result, an alternating electric field is generated radially around the center of the deflection yoke 4, that is, the center of the funnel portion 1.
【０００８】この交番電界の内、偏向ヨーク４の外側に
生じるものは、陰極線管装置の周辺に構成された適宜の
シールド手段によりシールドでき、外部に放射されるこ
とはない。ところが、偏向ヨーク４の内側、即ち、ファ
ンネル部１内に生じる交番電界に対するシールドはなさ
れておらず、従来、ファンネル部１の内側に発生した交
番電界は、コーン部1b及び本体部1cを経てフェースパネ
ル２に達し、更に該フェースパネル２を透過して前方に
放射されており、フェースパネル２前面の観察者が、人
体に有害な前記交番電界中に曝される難点があった。A part of the alternating electric field generated outside the deflection yoke 4 can be shielded by an appropriate shield means formed around the cathode ray tube device and is not radiated to the outside. However, there is no shield against the alternating electric field generated inside the deflection yoke 4, that is, inside the funnel portion 1. Conventionally, the alternating electric field generated inside the funnel portion 1 passes through the cone portion 1b and the main body portion 1c, and then the face. There is a problem that the observer on the front face of the face panel 2 is exposed to the alternating electric field harmful to the human body because it reaches the panel 2 and further radiates forward through the face panel 2.
【０００９】本発明は斯かる事情に鑑みてなされたもの
であり、偏向ヨークによる磁界形成に伴ってファンネル
部の内側に生じる交番電界を低減し、フェースパネル前
方への電界放射を減じ、観察者の安全に寄与し得る陰極
線管装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and reduces the alternating electric field generated inside the funnel portion due to the formation of the magnetic field by the deflection yoke, and reduces the electric field emission toward the front of the face panel, thereby observing the observer. It is an object of the present invention to provide a cathode ray tube device that can contribute to the safety of the.
【００１０】[0010]
【課題を解決するための手段】本発明に係る陰極線管装
置は、電子ビームの偏向のための偏向ヨークによる磁界
形成に伴ってファンネル部内に発生する交番電界を低減
し、フェースパネル前方への放射を軽減しようとするも
のであり、またこの交番電界の低減を、ファンネル部の
外表面の偏向ヨークの周設範囲全域を含む範囲に被着し
た導電体の一部を接地することにより実現したものであ
る。A cathode ray tube apparatus according to the present invention reduces an alternating electric field generated in a funnel portion due to formation of a magnetic field by a deflection yoke for deflecting an electron beam, and radiates light to the front of a face panel. In addition, the reduction of the alternating electric field is realized by grounding a part of the conductor adhered to the outer surface of the funnel portion, including the entire surrounding area of the deflection yoke. Is.
【００１１】[0011]
【作用】本発明においては、ファンネル部の外表面に導
電体を被着し、この導電体の一部を接地して、偏向ヨー
クの内側に０Ｖの等電位面、即ち、電界シールド面を形
成し、ファンネル部内側への交番電界の進入を防ぎ、フ
ェースパネルの前面から放射される交番電界を低減す
る。更に、交番電界の発生源となる偏向ヨークの周設範
囲を含んで導電体の被着範囲を設定し、交番電界の低減
効果を高めると共に、低強度のネック部とコーン部との
連結部位（ネックシールライン）への電界の集中を防
ぎ、陰極線管装置の信頼性を維持する。According to the present invention, the outer surface of the funnel portion is coated with a conductor, and a part of the conductor is grounded to form an equipotential surface of 0 V, that is, an electric field shield surface inside the deflection yoke. However, the alternating electric field is prevented from entering the inside of the funnel portion, and the alternating electric field radiated from the front surface of the face panel is reduced. Further, by setting the deposition area of the conductor including the surrounding area of the deflection yoke which is the source of the alternating electric field, the effect of reducing the alternating electric field is enhanced, and the connecting portion between the neck portion and the cone portion of low strength ( The electric field is prevented from concentrating on the neck seal line) and the reliability of the cathode ray tube device is maintained.
【００１２】[0012]
【実施例】以下本発明をその実施例を示す図面に基づい
て詳述する。図１本発明に係る陰極線管装置の構成を示
す側面図であり、図２は偏向ヨークの取付け前の状態を
示す側面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. 1 is a side view showing a configuration of a cathode ray tube device according to the present invention, FIG. 2 is a side view showing a state before mounting the deflection yoke.
【００１３】本発明に係る陰極線管装置は、図４に示す
従来の陰極線管装置と同様、細径の円筒形をなすネック
部1aと矩形筒形をなす本体部1cとをコーン部1bにより連
結してなるファンネル部１を備え、本体部1cの先端側の
開口をフェースパネル２により覆い、ネック部1aの基端
に電子銃３を封止すると共に、ネック部1aとコーン部1b
との連結部位に、これらの外側を夫々適宜長さに亘って
囲繞する態様にて偏向ヨーク４を周設してなる。この偏
向ヨーク４は、図５に横断面図を示す従来のそれと同
様、円筒形のフェライトコアの内側に、垂直偏向コイル
及び水平偏向コイルを備えてなり、長手方向の一側に設
けた固定治具40により、ネック部1a外周の所定位置に位
置決め固定されている。In the cathode ray tube device according to the present invention, as in the conventional cathode ray tube device shown in FIG. 4, a neck portion 1a having a small diameter and a main body portion 1c having a rectangular tubular shape are connected by a cone portion 1b. The front panel 2 of the main body 1c is covered with the face panel 2, the electron gun 3 is sealed at the base end of the neck 1a, and the neck 1a and the cone 1b are provided.
A deflection yoke 4 is circumferentially provided at a connection portion with and around the outer sides of the deflection yokes with appropriate lengths. This deflection yoke 4 is provided with a vertical deflection coil and a horizontal deflection coil inside a cylindrical ferrite core in the same manner as the conventional one whose transverse cross section is shown in FIG. The tool 40 positions and fixes it at a predetermined position on the outer periphery of the neck portion 1a.
【００１４】本体部1cの外表面には、その周囲を絶縁体
膜６により囲まれたアノード電極５が形成してあり、ま
た絶縁体膜６の形成範囲を除く略全周に亘って導電膜７
が形成してある。また前記フェースパネル２の外側に
は、本体部1cへの封止部位における防爆性を保証するた
めの防爆バンド20が巻着され、更にフェースパネル２の
外側の４隅には、図示しない外箱への取付けのためのブ
ラケット21，21…（２つのみ図示）が夫々突設されてい
る。On the outer surface of the main body 1c, an anode electrode 5 surrounded by an insulating film 6 is formed, and a conductive film is formed over substantially the entire circumference excluding the range where the insulating film 6 is formed. 7
Is formed. An explosion-proof band 20 for assuring the explosion-proof property at the sealing portion to the main body 1c is wound around the outside of the face panel 2, and further, at four corners on the outside of the face panel 2, an outer box not shown. Brackets 21, 21 ... (only two shown) for projecting onto the respective projections.
【００１５】さて本発明に係る陰極線管装置は、図２に
示す如く、ネック部1a及びコーン部1b夫々の一部を覆う
態様にてファンネル部１の外表面に被着された導電体
（導電シート８）を備えている。図３は導電シート８の
外観斜視図であり、図示の如く導電シート８は、ネック
部1a及びコーン部1bの外形に沿う漏斗形に成形してあ
り、内側全面に塗布された導電性接着剤8aにより、ファ
ンネル部１の外表面に接着固定されている。なお、導電
シート８の拡がり側端縁の一部には円弧形の切欠き部8b
が形成してあり、この切欠き部8bは、前記接着固定に際
して本体部1c外側のアノード電極５と周方向に整合さ
れ、高電圧が印加されるアノード電極５の絶縁を保証す
る作用をなす。Now, as shown in FIG. 2, the cathode ray tube apparatus according to the present invention is a conductor (conductive material) attached to the outer surface of the funnel portion 1 so as to cover a part of each of the neck portion 1a and the cone portion 1b. The seat 8) is provided. FIG. 3 is an external perspective view of the conductive sheet 8. As shown in the figure, the conductive sheet 8 is formed in a funnel shape along the outer shapes of the neck portion 1a and the cone portion 1b, and the conductive adhesive applied to the entire inner surface. The outer surface of the funnel portion 1 is adhered and fixed by 8a. In addition, an arc-shaped cutout portion 8b is formed on a part of the spread side edge of the conductive sheet 8.
This notch portion 8b is circumferentially aligned with the anode electrode 5 outside the main body portion 1c at the time of the adhesive fixing, and serves to ensure the insulation of the anode electrode 5 to which a high voltage is applied.
【００１６】以上の如き導電シート８の被着範囲は、前
述の如く固定された偏向ヨーク４の周設範囲の全域を含
む範囲、即ち、固定治具40による固定端から他端に至る
偏向ヨーク４の全長を超える範囲としてあり、このよう
に被着された導電シート８の一部は、適宜の接地手段に
より接地される。なお、図１及び図２においては、本体
部1cの外表面に形成された前記導電膜７に導電シート８
のコーン部1b側の端縁が接触させてあり、この場合、フ
ァンネル部１に静電容量を付加すべく設けた前記導電膜
７を介して導電シート８の接地が行われ、導電シート８
単独での接地手段を設ける必要はない。The range of deposition of the conductive sheet 8 as described above includes the entire range of the circumference of the deflection yoke 4 fixed as described above, that is, the deflection yoke from the fixed end by the fixing jig 40 to the other end. 4 is a range exceeding the total length, and a part of the conductive sheet 8 thus deposited is grounded by an appropriate grounding means. In addition, in FIGS. 1 and 2, a conductive sheet 8 is formed on the conductive film 7 formed on the outer surface of the main body 1c.
The edges on the side of the cone portion 1b are in contact with each other. In this case, the conductive sheet 8 is grounded through the conductive film 7 provided to add the electrostatic capacitance to the funnel portion 1, and the conductive sheet 8
There is no need to provide a separate grounding means.
【００１７】以上の如く構成された本発明に係る陰極線
管装置においては、電子銃３から射出されてネック部1a
の軸心上を進行する電子ビームが、偏向ヨーク４の垂
直，水平偏向コイルへの通電に伴ってネック部1aとコー
ン部1bとの連結部位に形成される磁界の作用により偏向
されて、コーン部1b及び本体部1cの内側を経てフェース
パネル２内側の蛍光面上に走査され、この走査によりフ
ェースパネル２前面への画像形成が行われる。In the cathode ray tube device according to the present invention constructed as above, the neck portion 1a is emitted from the electron gun 3.
The electron beam traveling on the axis of is deflected by the action of the magnetic field formed at the connecting portion between the neck portion 1a and the cone portion 1b as the vertical and horizontal deflection coils of the deflection yoke 4 are energized. The fluorescent screen inside the face panel 2 is scanned through the inside of the portion 1b and the main body portion 1c, and an image is formed on the front surface of the face panel 2 by this scanning.
【００１８】またこのとき、偏向ヨーク４の中心周りに
放射状をなして交番電界が発生するが、本発明に係る陰
極線管装置においては、ファンネル部１の外表面に一部
を接地された導電シート８が被着され、偏向ヨーク４の
周設範囲の内側に、０Ｖの等電位面、即ち、電界シール
ド効果を有する面が形成されており、前述した如く発生
する交番電界のファンネル部１内側への進入を有効に防
止でき、フェースパネルの前面からの交番電界の放射を
大幅に低減することができる。At this time, an alternating electric field is generated in a radial pattern around the center of the deflection yoke 4. In the cathode ray tube device according to the present invention, the outer surface of the funnel portion 1 is partially electrically grounded. 8 is attached, and an equipotential surface of 0 V, that is, a surface having an electric field shielding effect is formed inside the peripheral area of the deflection yoke 4, and the surface is provided inside the funnel portion 1 of the alternating electric field generated as described above. Can be effectively prevented, and the emission of the alternating electric field from the front surface of the face panel can be significantly reduced.
【００１９】なお本実施例においては、ファンネル部１
の外表面への導電体の被着を導電シート８の接着により
実現しているが、例えば、カーボン等の導電材料の塗布
により前記導電体の被着を実現することもできる。また
ファンネル部１の外表面における導電体の被着範囲は、
本実施例中に示す如く、偏向ヨーク４の周設範囲の全域
を含むことが望ましいが、これよりも狭い範囲であって
も交番電界の低減効果は得られる。In the present embodiment, the funnel portion 1
Although the conductor is adhered to the outer surface of the substrate by adhering the conductive sheet 8, the conductor can be adhered by applying a conductive material such as carbon. In addition, the coverage of the conductor on the outer surface of the funnel portion 1 is
As shown in the present embodiment, it is desirable to include the entire circumference of the deflection yoke 4, but the effect of reducing the alternating electric field can be obtained even in a narrower range.
【００２０】[0020]
【発明の効果】以上詳述した如く本発明に係る陰極線管
装置においては、偏向ヨーク内側のファンネル部の外表
面に被着せしめた導電体の一部を接地し、偏向ヨークの
内側に電界シールド面を形成したから、偏向ヨークによ
る磁界形成に伴って生じる交番電界のファンネル部内側
への進入を防ぐことができ、フェースパネルの前方への
交番電界の放射が減じられ、フェースパネル前面の形成
画像の観察者が人体に有害な電界中に曝されることがな
く、観察者の安全に寄与し得る等、本発明は優れた効果
を奏する。As described in detail above, in the cathode ray tube device according to the present invention, a part of the conductor adhered to the outer surface of the funnel portion inside the deflection yoke is grounded, and the electric field shield is provided inside the deflection yoke. Since the surface is formed, it is possible to prevent the alternating electric field generated due to the formation of the magnetic field by the deflection yoke from entering the inside of the funnel portion, the emission of the alternating electric field to the front of the face panel is reduced, and the image formed on the front surface of the face panel is reduced. The present invention exerts excellent effects such that the observer is not exposed to an electric field harmful to the human body and can contribute to the safety of the observer.
【図１】本発明に係る陰極線管装置の側面図である。FIG. 1 is a side view of a cathode ray tube device according to the present invention.
【図２】偏向ヨーク取付け前の本発明に係る陰極線管装
置の側面図である。FIG. 2 is a side view of the cathode ray tube device according to the present invention before attaching the deflection yoke.
【図３】導電シートの外観斜視図である。FIG. 3 is an external perspective view of a conductive sheet.
【図４】従来の陰極線管装置の側面図である。FIG. 4 is a side view of a conventional cathode ray tube device.
【図５】偏向ヨークの模式的な横断面図である。FIG. 5 is a schematic cross-sectional view of a deflection yoke.
１ ファンネル部 ２ フェースパネル ３ 電子銃 ４ 偏向ヨーク ８ 導電シート 1 Funnel part 2 Face panel 3 Electron gun 4 Deflection yoke 8 Conductive sheet
Claims (3)
部先端の開口を内側に蛍光面を有するフェースパネルに
より覆い、前記電子銃が射出する電子ビームを、前記フ
ァンネル部の外側に周設された偏向ヨークが形成する磁
界の作用により偏向して、前記蛍光面上に走査させるよ
うにした陰極線管装置において、前記偏向ヨークによる
磁界形成に伴って前記ファンネル部の内側に発生し、前
記フェースパネルの前面に放射される交番電界の低減手
段を具備することを特徴とする陰極線管装置。1. An opening at the tip of a funnel portion formed by sealing an electron gun at the base end is covered with a face panel having a phosphor screen inside, and an electron beam emitted from the electron gun is circulated outside the funnel portion. In a cathode ray tube device that is deflected by the action of a magnetic field formed by a deflection yoke provided to scan on the phosphor screen, the cathode ray tube device is generated inside the funnel portion with the formation of the magnetic field by the deflection yoke. A cathode ray tube device comprising means for reducing an alternating electric field radiated on the front surface of a face panel.
表面に被着され、その一部が接地された導電体である請
求項１記載の陰極線管装置。2. The cathode ray tube device according to claim 1, wherein the reducing means is a conductor that is attached to the outer surface of the funnel portion and is partially grounded.
ル部の外側における前記偏向ヨークの周設範囲の全域を
含む請求項２記載の陰極線管装置。3. The cathode ray tube device according to claim 2, wherein the deposition range of the conductor includes the entire peripheral range of the deflection yoke outside the funnel portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15029292A JPH05343005A (en) | 1992-06-10 | 1992-06-10 | Cathode-ray tube device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15029292A JPH05343005A (en) | 1992-06-10 | 1992-06-10 | Cathode-ray tube device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05343005A true JPH05343005A (en) | 1993-12-24 |
Family
ID=15493806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15029292A Pending JPH05343005A (en) | 1992-06-10 | 1992-06-10 | Cathode-ray tube device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05343005A (en) |
-
1992
- 1992-06-10 JP JP15029292A patent/JPH05343005A/en active Pending
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