JPH02267835A - Apparatus and method for varying arc length of exposure table - Google Patents
Apparatus and method for varying arc length of exposure tableInfo
- Publication number
- JPH02267835A JPH02267835A JP33458389A JP33458389A JPH02267835A JP H02267835 A JPH02267835 A JP H02267835A JP 33458389 A JP33458389 A JP 33458389A JP 33458389 A JP33458389 A JP 33458389A JP H02267835 A JPH02267835 A JP H02267835A
- Authority
- JP
- Japan
- Prior art keywords
- arc length
- mercury lamp
- shutter
- exposure table
- circular
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 12
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 20
- 230000001360 synchronised effect Effects 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
- H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
- H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
- H01J9/2272—Devices for carrying out the processes, e.g. light houses
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、カラーブラウン管露光台のアークの長さ可変
装置およびその方法に関するにして、詳細には露光台の
アーク長（長さ）を可変にしてパネル中央部と周辺部に
露光量を一定にするによりパネル内面に形成する螢光膜
ストライブ（ｓｔｒｉｐｅ）の曲がり現象を改善した露
光台アーク長可変装置およびその方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device and method for varying the arc length of a color cathode ray tube exposure stand, and more specifically, the present invention relates to a device and method for varying the arc length of a color cathode ray tube exposure stand. The present invention relates to an apparatus and method for varying the arc length of an exposure table that improves the bending phenomenon of phosphor film stripes formed on the inner surface of a panel by keeping the exposure amount constant.
一般に、カラーブラウン管のパネル内面には赤。Generally, the inner surface of the panel of a color cathode ray tube is red.
緑、青各々に発光する３種類の螢光体がストライブ形状
にて塗布されており、前記赤、緑、青色のストライブの
間には光吸収材にてなるブラックマトリックス（ｂｌａ
ｃｋ ｍａｔｒｉｘ）が形成されている。Three types of phosphors that emit light in green and blue are coated in the form of stripes, and between the red, green, and blue stripes is a black matrix made of a light absorbing material.
ck matrix) is formed.
前記の如く赤、緑、青の螢光体ストライブはシャドーマ
スクの微細な大違を通じて光源からの光を照射するによ
り形成される。As described above, the red, green, and blue phosphor stripes are formed by irradiating light from a light source through minute gaps in the shadow mask.
このように、光源からの光を照射する一般の露光台の構
造は、第１図に図示せるが如く光源としての水銀灯１を
内蔵しているランプハウス２と、前記水銀灯１の光がパ
ネル９の一側周辺部一中央部→他側周辺部に照射するこ
とが出来るよう左右に移動可能なシャッター３と、前記
シャッター３を通過した光の屈折を精確に位置させる補
正レンズ４と、前記パネル９に照射された光がパネル９
の中央部と周辺部の照度比を合わせる為のフィルター５
と、画面の露光領域を制限するシャドーリング６と、光
源とパネル９の橋梁役割として色選別機能を持つシャド
ーマスク８が装着せるパネル９を支持するヘッド７にて
構成されている。As shown in FIG. 1, the structure of a general exposure table that irradiates light from a light source includes a lamp house 2 containing a mercury lamp 1 as a light source, and a panel 9 in which the light from the mercury lamp 1 is transmitted. A shutter 3 that is movable from side to side so as to illuminate from a peripheral area on one side to a central area on the other side and a peripheral area on the other side, a correction lens 4 that accurately positions the refraction of the light that has passed through the shutter 3, and the panel. The light irradiated on panel 9
Filter 5 to match the illuminance ratio between the center and periphery of
, a shadow ring 6 that limits the exposure area of the screen, and a head 7 that supports a panel 9 to which a shadow mask 8 having a color selection function is attached as a bridge between the light source and the panel 9.
ここでは、上記水銀灯１の照射長さしがアーク長になる
。Here, the irradiation length of the mercury lamp 1 becomes the arc length.
上記の如き構造にてなる従来の露光台に於いては、水銀
灯１から照射された光がパネル９の内面に塗布せる感光
性樹脂組成物を感光させて所定の螢光膜を形成させるの
であるが、第２Ａ図にて図示せるが如くパネル９の内面
に感光された部位はシャドーマスク８の成る一つの穴を
通じて入射される光量により木彫にてなるＡ部分と、半
影にてなるＢ部分にて区分され、半影８部分は木影Ａ部
分よりも暗くなる。In the conventional exposure table having the above structure, the light emitted from the mercury lamp 1 sensitizes the photosensitive resin composition applied to the inner surface of the panel 9 to form a predetermined fluorescent film. However, as shown in FIG. 2A, the exposed area on the inner surface of the panel 9 is divided into part A, which is a wooden carving, and part B, which is a penumbra, depending on the amount of light that enters through one hole in the shadow mask 8. The penumbra 8 portion is darker than the tree shadow A portion.
従って、上記木影Ａ部分と半影８部分に到達する光量を
互いに等しくする為には第２Ｂ図に図示したが如く、シ
ャドーマスク８の横側孔を通じたまた一つの半影Ｂ′部
分が前記半影８部分と重ねられ無ければならない。この
ように成るよう、前記水銀灯１の長さに該当するアーク
長りを選定しなければならない。前記アーク長しの選定
が適当であれば、第３Ａ図に図示したが如く同じ精確な
直線のストライブ形状の螢光膜に形成されるのであるが
、若し、アーク長が必要以上に長くて照射される光量が
あまり多く、または必要以上に短くて照射される光量が
あまり少なくて、第３Ｂ図および第３Ｃ図に図示したよ
うにストライブ螢光膜が均一性を失して曲がり現象が発
生する。まして、前記パネル９の中央部から周辺部に行
くにつれて、照射される光量は少なくなるので（第２図
参照）全部の部位を同じ光量にて照射する為には周辺部
の露光時アーク長を中央部の露光時のアーク長よりも長
くしてやる必要がある。Therefore, in order to equalize the amount of light reaching the tree shadow A and the penumbra 8, another penumbra B' is added through the side hole of the shadow mask 8, as shown in FIG. 2B. It must overlap with the eight penumbras. To achieve this, an arc length corresponding to the length of the mercury lamp 1 must be selected. If the arc length is selected appropriately, the fluorescent film will be formed in the same precise linear stripe shape as shown in Figure 3A, but if the arc length is longer than necessary, If the amount of light irradiated is too large or the amount of light irradiated is too small because it is shorter than necessary, the striped phosphor film loses its uniformity and bends as shown in Figures 3B and 3C. occurs. Furthermore, the amount of light irradiated decreases as you go from the center to the periphery of the panel 9 (see Figure 2), so in order to irradiate all parts with the same amount of light, the arc length during exposure of the periphery must be adjusted. It is necessary to make the arc length longer than the arc length when exposing the central part.
しかしながら、現実的に水銀灯の長さをその度毎に変化
させると言うことは不可能であるので、従来はパネルの
中央部と周辺部との間に適当な中間値を取って単一アー
ク長りを持つ水銀灯を使用しているので正確な直線状の
螢光膜ストライブを形成させることが出来ない問題点が
あった。However, it is impossible to realistically change the length of the mercury lamp each time, so in the past, an appropriate intermediate value was taken between the center and the periphery of the panel to achieve a single arc length. Since the method uses a mercury lamp with a high temperature, there is a problem in that it is not possible to form accurate linear fluorescent film stripes.
本発明は上記せる従来の問題点を解決するがために創案
されたものにして、本発明の目的はパネルの周辺部の露
光時にはアーク長が長くなり、パネルの中央部の露光時
にはアーク長が短くなる可変アーク長によりパネルに照
射される光量を均一にすることにより螢光膜の曲がり現
象を防止して、精確なストライブ形状の螢光膜形成が可
能なるようにした露光台のアーク長可変方法を提供する
ことにある。The present invention was devised to solve the above-mentioned conventional problems, and the purpose of the present invention is to increase the arc length when exposing the peripheral area of the panel, and to increase the arc length when exposing the central area of the panel. The arc length of the exposure table makes it possible to prevent the bending of the phosphor film by making the amount of light irradiated onto the panel uniform by shortening the variable arc length, making it possible to form a phosphor film with precise stripe shapes. The purpose is to provide a variable method.
本発明のまた他の目的は、上述せるアーク長の可変方法
を実現させるようにする露光台のアーク長可変装置を提
供するこζにある。Still another object of the present invention is to provide an arc length variable device for an exposure table that allows the method of varying the arc length described above to be realized.
上記目的を達成する技術的手段として、本発明は適切な
長さの水銀灯を内蔵したランプハウスの上部にてシャッ
ターの左右移動速度に同期された速度で回転すると同時
にその周辺に鋸歯部を持つ円形調節板と、シャッターの
ｍ個フレームに形成させたラックと、ラックと噛み合っ
て回転するピニオンと、ピニオンと一体にてなりチェー
ンにより円形調節板の鋸歯部と連結するスプロケットホ
イールを含み、円形調節板には楕円形孔を開けて楕円形
孔の長軸にては最大のアーク長を、短軸にては最少のア
ーク長を形成させて円形調節板の回転につれてアーク長
を可変させるのを特徴とする。As a technical means to achieve the above object, the present invention provides a circular lamp housing that rotates at a speed synchronized with the horizontal movement speed of the shutter at the upper part of the lamp house containing a mercury lamp of an appropriate length, and at the same time has a sawtooth part around the lamp house. The circular adjustment plate includes an adjustment plate, a rack formed on m frames of the shutter, a pinion that rotates by meshing with the rack, and a sprocket wheel that is integrated with the pinion and is connected to the sawtooth part of the circular adjustment plate by a chain. The feature is that an elliptical hole is formed in the hole, and the maximum arc length is formed on the long axis of the elliptical hole, and the minimum arc length is formed on the short axis, and the arc length is varied as the circular adjustment plate rotates. shall be.
以下、添付せる図面により本発明の実施例を具体的に説
明する。Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
第４図および第５図は、本発明によるアーク長可変装置
の概略断面図および平面図にして、同一な構成要素に対
しては同一符号を付与すると共にその重複する同一説明
を省略する。4 and 5 are a schematic cross-sectional view and a plan view of the variable arc length device according to the present invention, and the same components are given the same reference numerals and redundant explanations thereof will be omitted.
図示せるが如く、円形調節板１０は傾斜面１１ａを持つ
楕円形孔１１とその周辺に形成せる鋸歯部１２にて成る
。As shown in the figure, the circular adjusting plate 10 includes an oval hole 11 having an inclined surface 11a and a sawtooth portion 12 formed around the oval hole 11.
この円形調節板１０は前記ランプノーウス２とシャッタ
ー３の間に設置されるが、前記ランブノ＼ウス２のウィ
ンドー２ａの上部に設置する。This circular adjustment plate 10 is installed between the lamp house 2 and the shutter 3, and is installed above the window 2a of the lamp house 2.
上記楕円形孔１１の傾斜面１１ａは、上部が広く下部は
狭く形成して、ここを通過する光の経路上の干渉を防止
するようにし、前記円形調節板１０はその表面を黒化処
理して光の乱反射を防止するようにする。The inclined surface 11a of the elliptical hole 11 is formed to be wide at the top and narrow at the bottom to prevent interference on the path of light passing therethrough, and the surface of the circular adjustment plate 10 is blackened. to prevent diffused reflection of light.
また、円形調節板周辺に形成させた前記鋸歯部１２はチ
ェーン１４により一側に設置したチェーンスプロケット
ホイール（ｃｈａｉｎ ５ｐｒｏｃｋｅｔ ｖｈｅｅｌ
Ｈ３に連結され、前記スプロケットホイール１３はシャ
・ツタ−３の一側フレーム１５に形成されたラック１５
ａと噛み合って回転するピニオン１６を持ち、このピニ
オン１６は支持軸１７と同一軸線上に連結されてシャッ
ター３の左右移動速度と同期された速度で回転するよう
構成したものである。Further, the sawtooth portion 12 formed around the circular adjustment plate is attached to a chain sprocket wheel (chain sprocket wheel) installed on one side by a chain 14.
H3, and the sprocket wheel 13 is connected to a rack 15 formed on one side frame 15 of the shaft 3.
The pinion 16 is connected to the support shaft 17 on the same axis and rotated at a speed synchronized with the horizontal movement speed of the shutter 3.
以上の如き構成の円形調節板１０の作動状態を説明する
。シャ、ツタ−３が左右に移動すれば、これに同期して
その一側フレーム１５に形成されたラック１５ａと噛み
合っているピニオン１６が回転し、このピニオンｌＢと
一体にて回転するスプロケットホイール１３が回転して
、このスプロケットホイール１３の回転が鋸歯部１２に
伝達されて円形調節板１０が回転される。従って、この
円形調節板１０の回転により楕円形孔１１も一緒に回転
されてアーク長Ｌｖが可変される。The operating state of the circular adjustment plate 10 configured as above will be explained. When the shaft 3 moves left and right, the pinion 16 that meshes with the rack 15a formed on the frame 15 on one side rotates in synchronization with the movement, and the sprocket wheel 13 rotates together with the pinion 1B. rotates, and the rotation of the sprocket wheel 13 is transmitted to the sawtooth section 12, thereby rotating the circular adjusting plate 10. Therefore, as the circular adjustment plate 10 rotates, the oval hole 11 is also rotated and the arc length Lv is varied.
次に、本発明装置の動作によるアーク長の変化状態を第
６Ａ〜６０図を参照してより詳細に説明する。円形調節
板１０はシャッター３の左右移動速度と同期して回転す
る時、楕円形孔１１が一緒に回転してその変化する直径
部が水銀灯１の中心と一致する部分にて決定されるので
、アーク長は水銀灯１の長さにて決定されるのでは無く
前記楕円形孔１１の回転によりアーク長Ｌｖが可変され
るのを知ることができる。即ち画面の中央部にては、第
６図にての如く円形調節板１０が回転してその楕円形孔
１１の位置が最少り、 になるのでアーク長も＋１１ｎ
最少になり水銀灯１から照射される光量もまた最少にな
り、画面の中央部から周辺部に移動するにつれて第６Ｂ
図の如く円形調節板１０が回転してアーク長Ｌｖが可変
され、継続して画面の周辺部においては第６Ｃ図にての
如く円形調節板■０が回転してその楕円形孔１１の位置
が最大Ｌ になるｌ１ａｘ
のでアーク長が最大になり、水銀灯１から照射された光
量は最大になる。Next, the changes in arc length due to the operation of the apparatus of the present invention will be explained in more detail with reference to FIGS. 6A to 60. When the circular adjustment plate 10 rotates in synchronization with the horizontal movement speed of the shutter 3, the elliptical hole 11 rotates together with the changing diameter part, which is determined by the part that coincides with the center of the mercury lamp 1. It can be seen that the arc length is not determined by the length of the mercury lamp 1, but is varied by the rotation of the oval hole 11. That is, in the center of the screen, the circular adjustment plate 10 rotates as shown in FIG. 6, and the position of the oval hole 11 becomes the minimum, and the arc length also becomes +11n, the minimum, and the mercury lamp 1 irradiates. The amount of light that is reflected also becomes minimum, and as you move from the center of the screen to the periphery, the 6th B
As shown in the figure, the circular adjustment plate 10 rotates to vary the arc length Lv, and then in the peripheral area of the screen, the circular adjustment plate ■0 rotates as shown in Figure 6C to position the oval hole 11. Since l1ax becomes the maximum L, the arc length becomes the maximum and the amount of light irradiated from the mercury lamp 1 becomes the maximum.
この様に円形調節板１０は、シャッター３の左右移動速
度と同期された速度で回転するので、シャッターの中央
ホール３ａがパネル９の周辺部に向う時には前記楕円形
孔１１の長い直径部に該当する最大のアーク長Ｌ を
形成するようにし、Ｏ＋ａＸ
反対にシャッターの中央ホール３ａがパネル９の中央部
に向かう時には、前記楕円形孔１１の短い直径部に該当
する最少のアーク長しｍｉｎを形成するのでパネル９の
あらゆる部位に一定なる光量を照射することが出来るの
である。一方、前記円形調節板１０を回転するための駆
動方法として本発明にての如くスプロケットホイール１
３にチェーン１４を連結して駆動する方法以外にもベル
トプーリとベルトを利用する方法など、その他の動力伝
達手段を利用して円形調節板を回転するようにするのも
勿論のことである。In this way, the circular adjustment plate 10 rotates at a speed that is synchronized with the horizontal movement speed of the shutter 3, so that when the central hole 3a of the shutter faces the periphery of the panel 9, it corresponds to the long diameter portion of the oval hole 11. O+a Therefore, all parts of the panel 9 can be irradiated with a constant amount of light. On the other hand, as a driving method for rotating the circular adjusting plate 10, a sprocket wheel 1 as in the present invention is used.
It goes without saying that the circular adjustment plate may be rotated using other power transmission means, such as a method using a belt pulley and a belt, in addition to the method of driving the circular adjustment plate by connecting the chain 14 to the rotor 3.
以上の如く、本発明はブラウン管パネル周辺部露光時に
はアーク長が長くなり、その中央部露光時には短くなる
可変アーク長によりパネルに照射される光量を一定に維
持させることにより螢光膜の膜曲がり現象を防止して精
確なストライブ形状の螢光膜形成が可能になる効果があ
る。As described above, the present invention prevents the film bending of the phosphor film by maintaining the amount of light irradiated onto the panel constant through the variable arc length, which becomes longer when the peripheral part of the cathode ray tube panel is exposed, and becomes shorter when the central part is exposed. This has the effect of preventing the formation of a fluorescent film in an accurate stripe shape.
第１図は従来露光台の概略断面図、第２Ａ図は−船釣な
露光原理図、第２Ｂ図は本発明にて追求する露光原理図
、第３Ａ図〜第３Ｃ図はアーク長による螢光膜ストライ
プの状態図、第４図は本発明のアーク長可変装置の概略
断面図、第５図は本発明のアーク長可変装置の概略平面
図、第６Ａ図〜第６Ｃ図は本発明の装置によりアーク長
を可変させる方法を説明する為の円形調節板の動作状態
平面図。
１・・・水銀灯 ２・・・ランプハウス３
・・・シャッター １０・・・円形調節板１１
・・・楕円形孔
ＦＩＧ。
ＦＩＧ。
６．４
ＦＩＧ、６．Ｃ
ソーく
１ａ
ＦＩＧ、６．８Fig. 1 is a schematic sectional view of a conventional exposure table, Fig. 2A is a diagram of the exposure principle used by boat, Fig. 2B is a diagram of the exposure principle pursued by the present invention, and Figs. 4 is a schematic sectional view of the variable arc length device of the present invention, FIG. 5 is a schematic plan view of the variable arc length device of the present invention, and FIGS. 6A to 6C are state diagrams of the variable arc length device of the present invention. FIG. 3 is a plan view of the circular adjustment plate in operation for explaining a method of varying the arc length using the device. 1...Mercury lamp 2...Lamp house 3
... Shutter 10 ... Circular adjustment plate 11
...Oval hole FIG. FIG. 6.4 FIG. C Soak 1a FIG, 6.8
Claims (1)
左右に移動するシャッター３を構成する露光台に於いて
、 前記のランプハウス２上部でシャッター３の左右移動速
度と同期せる速度にて回転すると同時に、その周辺に鋸
歯部１２を持つ円形調節板１０と、シャッター３の一側
フレーム１５に形成させたラック１５ａと、前記ラック
１５ａに噛み合って回転するピニオン１６と、前記ピニ
オン１６と一体にてなりチェーン１４により円形調節板
１０の鋸歯部１２に連結されるスプロケットホィール１
３を含む露光台のアーク長可変装置。 ２、円形調節板１０に水銀灯１の光が通過する楕円形孔
１１を穿孔したことを特徴とする特許請求の範囲第１項
の露光台のアーク長可変装置。 ３、楕円形孔１１の内面１１ａは、上部は広く下部を狭
く傾斜させたことを特徴とする特許請求の範囲第１項の
露光台のアーク長可変装置。 ４、円形調節板１０の回転速度は露光台内に設置したシ
ャッター３の移動速度と同期するようにし、前記円形調
節板１０の回転により前記円形調節板１０に形成せる楕
円形孔１１の位置を変えて長軸にては最大のアーク長を
、短軸にては最少のアーク長を形成させて露光させるパ
ネル９の周辺部と中央部の光量変化につれて前記水銀灯
１のアーク長を可変させることを特徴とする露光台のア
ーク長可変方法。[Scope of Claims] 1. In an exposure table comprising a lamp house 2 containing a mercury lamp 1 and a shutter 3 that moves left and right above the lamp house 2, the left and right movement speed of the shutter 3 at the top of the lamp house 2 is A circular adjustment plate 10 that rotates at a synchronized speed and has sawtooth portions 12 around it, a rack 15a formed on one side frame 15 of the shutter 3, and a pinion 16 that rotates while meshing with the rack 15a. A sprocket wheel 1 is integrated with the pinion 16 and is connected to the sawtooth portion 12 of the circular adjustment plate 10 by a chain 14.
The arc length variable device of the exposure table including 3. 2. The variable arc length device for an exposure table according to claim 1, wherein the circular adjustment plate 10 is provided with an oval hole 11 through which light from the mercury lamp 1 passes. 3. The variable arc length device for an exposure table according to claim 1, wherein the inner surface 11a of the oval hole 11 is wide at the top and narrow at the bottom. 4. The rotational speed of the circular adjusting plate 10 is synchronized with the moving speed of the shutter 3 installed in the exposure stage, and the position of the oval hole 11 formed in the circular adjusting plate 10 is controlled by the rotation of the circular adjusting plate 10. The arc length of the mercury lamp 1 is varied as the amount of light changes at the periphery and center of the panel 9 to be exposed by forming a maximum arc length on the long axis and a minimum arc length on the short axis. A method for varying the arc length of an exposure table, which is characterized by:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR880021358 | 1988-12-23 | ||
| KR88-21358 | 1988-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02267835A true JPH02267835A (en) | 1990-11-01 |
| JP2670708B2 JP2670708B2 (en) | 1997-10-29 |
Family
ID=19282448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1334583A Expired - Fee Related JP2670708B2 (en) | 1988-12-23 | 1989-12-22 | Apparatus and method for varying arc length of exposure table |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2670708B2 (en) |
| GB (1) | GB2227361B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920007032A (en) * | 1990-09-22 | 1992-04-28 | 김정배 | Color Brown Tube Exposure Equipment |
| KR100310677B1 (en) * | 1994-12-07 | 2001-12-15 | 김순택 | Exposure device of color cathode ray tube |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54134969A (en) * | 1978-04-12 | 1979-10-19 | Toshiba Corp | Exposure unit for manufacture of color picture tube |
| JPS5828161A (en) * | 1981-08-12 | 1983-02-19 | Hitachi Ltd | Color braun tube and its manufacture |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3259038A (en) * | 1963-12-27 | 1966-07-05 | Sylvania Electric Prod | Light attenuator |
| US3559546A (en) * | 1967-11-01 | 1971-02-02 | Sylvania Electric Prod | Cathode ray tube screen exposure |
| US3760698A (en) * | 1970-10-17 | 1973-09-25 | Mitsubishi Electric Corp | Light exposure apparatus for forming fluorescent screens of color picture tubes |
| BE790090A (en) * | 1971-10-14 | 1973-04-13 | Philips Nv | IRRADIATION DEVICE USED FOR THE MANUFACTURE OF A COLOR TELEVISION TUBE WITH SHADOW MASK |
| BE793996A (en) * | 1972-01-14 | 1973-05-02 | Rca Corp | PRINTING PROCESS OF A CATHODIC RAY TUBE SCREEN STRUCTURE |
| NL7503665A (en) * | 1975-03-27 | 1976-09-29 | Philips Nv | METHOD OF MANUFACTURING A CATHODE RAY TUBE FOR DISPLAYING COLORED IMAGES. |
| NL7515224A (en) * | 1975-12-31 | 1977-07-04 | Philips Nv | EXPOSURE DEVICE FOR MANUFACTURE OF CATHODE BEAM TUBES FOR DISPLAYING COLORED IMAGES AND CATHODE BEAM TUBE MADE WITH SUCH DEVICE. |
| DE2902233A1 (en) * | 1979-01-20 | 1980-07-24 | Standard Elektrik Lorenz Ag | METHOD FOR PRODUCING LUMINAIRE SCREENS FOR COLORED TUBES AND DEVICE FOR IMPLEMENTING THE METHOD |
| US4516841A (en) * | 1983-08-19 | 1985-05-14 | Rca Corporation | Method for screening line screen slit mask color picture tubes |
-
1989
- 1989-12-21 GB GB8928868A patent/GB2227361B/en not_active Expired - Fee Related
- 1989-12-22 JP JP1334583A patent/JP2670708B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54134969A (en) * | 1978-04-12 | 1979-10-19 | Toshiba Corp | Exposure unit for manufacture of color picture tube |
| JPS5828161A (en) * | 1981-08-12 | 1983-02-19 | Hitachi Ltd | Color braun tube and its manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2227361B (en) | 1993-11-17 |
| GB2227361A (en) | 1990-07-25 |
| GB8928868D0 (en) | 1990-02-28 |
| JP2670708B2 (en) | 1997-10-29 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |