JPH0364829A - Manufacturing method for paint film on faceplate of cathode-ray tube - Google Patents

Manufacturing method for paint film on faceplate of cathode-ray tube

Info

Publication number
JPH0364829A
JPH0364829A JP20053389A JP20053389A JPH0364829A JP H0364829 A JPH0364829 A JP H0364829A JP 20053389 A JP20053389 A JP 20053389A JP 20053389 A JP20053389 A JP 20053389A JP H0364829 A JPH0364829 A JP H0364829A
Authority
JP
Japan
Prior art keywords
ray tube
faceplate
nozzle portion
cathode
cathode ray
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
Application number
JP20053389A
Other languages
Japanese (ja)
Inventor
Yasuo Iwasaki
安男 岩崎
Hiroshi Okuda
奥田 博志
Akira Inoue
井之上 章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP20053389A priority Critical patent/JPH0364829A/en
Publication of JPH0364829A publication Critical patent/JPH0364829A/en
Pending legal-status Critical Current

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  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

PURPOSE:To manufacture a uniform paint film all over the outside surface of faceplate of a cathode-ray tube by spraying a paint solution out of a spray nozzle portion in such a condition that reversed polarity potentials are given to the faceplate and the spray nozzle portion arranged opposite to the faceplate respectively. CONSTITUTION:A constant voltage is impressed upon the envelope 22 of a spraying device 1 via a DC voltage source 3 while a cathode-ray tube 12 is arranged opposite to the spray nozzle portion 2 of the device 1 above the nozzle portion 2. A high-voltage button 5 in this cathode-ray tube 12 is earthed via an earthing conductor 7, so that a metal-backed film 21 associated electrically with the high-voltage dutton 5 via an inside conductive film 6 may be set in a potential of polarity reverse to that of the nozzle portion 2 of the device 1 by electrostatic induction. When in this condition a paint solution 10 is sprayed out of the nozzle portion 2, each of grains 11 present in the sprayed solution is attracted to the side of a faceplate 4 by electrostatic force so as to adhere to the outside surface of the faceplate 4. Thus, a paint film of specified thickness may be efficiently manufactured all over the outside surface of the faceplate 4.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、陰極線管のフェースプレートの外表面にた
とえば光吸収膜などの塗膜を形成する陰極線管のフェー
ス面塗膜の製造方法に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a cathode ray tube face coating film, in which a coating film such as a light absorption film is formed on the outer surface of a cathode ray tube face plate. It is.

[従来の技術] 第2図は従来の陰極線管のフェース面塗膜の製造方法を
示す正面図である。同図において、(12)は陰極線管
で、この陰極線管(12)はフェースプレート(4)と
ファンネル部(13)とネックm (19)とからなり
、フェースプレート(0のスカート部に金属製の防爆バ
ンド(8)を巻回し固定することにより防爆処理が施こ
されているとともに、上記防爆バンド(8)に外方に突
出する取付は用耳片(8)が固定されている。
[Prior Art] FIG. 2 is a front view showing a conventional method for manufacturing a face coating film of a cathode ray tube. In the same figure, (12) is a cathode ray tube, and this cathode ray tube (12) consists of a face plate (4), a funnel part (13), and a neck m (19). Explosion-proof treatment is carried out by winding and fixing an explosion-proof band (8), and a lug (8) that protrudes outward is fixed to the explosion-proof band (8).

(14)はスピンコーテイング機で、このスピンコーテ
イング機(工4)は回転台(20)とこの回転台(20
)の中央部から上向きに突設したファンネル部支持筒(
18)と上記回転台(20)の周辺部から上方に垂直に
植立させた支柱(17)とにより構成されている。 (
15)はサルベージキャップで、上記スピンコーテイン
グ機(10の外周に配置されている。
(14) is a spin coating machine, and this spin coating machine (work 4) has a rotary table (20) and a rotary table (20).
) is a funnel support tube that protrudes upward from the center of the (
18) and a pillar (17) vertically erected upward from the periphery of the rotary table (20). (
15) is a salvage cap, which is placed around the outer periphery of the spin coating machine (10).

つぎに、上記スピンコーテイング機(10を使用して、
陰極線管(12)のフェースプレート(4)の外表面に
塗膜を形成する方法について説明する。
Next, using the spin coating machine (10),
A method for forming a coating film on the outer surface of the face plate (4) of the cathode ray tube (12) will be explained.

フェースプレート(4)の外表面のクリーニングが終え
た陰極線管(12)のネック部(18)を上記支持筒(
18)に挿嵌してファンネル部(13)を受止め支持す
るとともに、取付は用耳片(9)の孔に支柱(17)の
上端の突起(17a)を係合することにより、上記フェ
ースプレート(4)を上向きにした状態で陰極線管(1
2)をスピンコーティングm(14)にセツティングし
、このセツティングされた陰極線管(12)の上向きフ
ェースプレート0)の中央位置の上部に塗液注入ノズル
(18)を配置する。
The neck part (18) of the cathode ray tube (12) whose outer surface of the face plate (4) has been cleaned is attached to the support tube (
18) to receive and support the funnel part (13), and the face is mounted by engaging the protrusion (17a) at the upper end of the post (17) with the hole in the ear piece (9). Insert the cathode ray tube (1) with the plate (4) facing upward.
2) is set on the spin coating m (14), and the coating liquid injection nozzle (18) is placed above the center position of the upward facing face plate 0) of the cathode ray tube (12) that has been set.

上記のような状態で、スピンコーテイング機(14)を
駆動して陰極線管(12)を40〜60rpm程度の低
速度で゛回転させながら、上記注入ノズル(16)から
所定量の塗液(10)を上記フェースプレート(4)の
外表面の中央部に注出する。
In the above state, while driving the spin coating machine (14) and rotating the cathode ray tube (12) at a low speed of about 40 to 60 rpm, a predetermined amount of coating liquid (10 ) is poured onto the center of the outer surface of the face plate (4).

その注出した塗液(lO)がフェースプレート(4)の
外表面のほぼ全域に流動し拡散された時点で、スピンコ
ーテイング機(10の回転数を100〜150rpmま
で上昇させて陰極線管(12)を高速回転させることに
より、塗液(lO)を遠心力を介して十分に外方に拡散
させ、これにより、フェースプレート(0の外表面の全
域にわたって厚みが均一化された塗膜を形成する。
When the poured coating liquid (lO) flows and diffuses over almost the entire outer surface of the face plate (4), the rotation speed of the spin coating machine (10) is increased to 100-150 rpm and the cathode ray tube (12 ) is rotated at high speed, the coating liquid (lO) is sufficiently diffused outward via centrifugal force, thereby forming a coating film with a uniform thickness over the entire outer surface of the face plate (lO). do.

なお、高速回転により周囲外方に振り切られる塗液はサ
ルベージキャップ(15)内に回収される。
Incidentally, the coating liquid thrown off to the outside by the high-speed rotation is collected in the salvage cap (15).

[発明が解決しようとする課題] 以上のような従来の陰極線管のフェース面塗膜の製造方
法による場合は、塗液をフェースプレートの外表面の全
体にむらなく拡散させるために、所定の塗膜を形成する
うえで必要な量以上の塗液を供給しなければならない。
[Problems to be Solved by the Invention] In the case of the conventional method for manufacturing a face coating film of a cathode ray tube as described above, in order to evenly spread the coating liquid over the entire outer surface of the face plate, a predetermined coating is applied. It is necessary to supply more coating liquid than is necessary to form a film.

それゆえに、塗液の使用効率が悪いばかりでなく、飛散
した液滴が塗膜に付着して塗膜が汚染されたり、回転に
ともなう遠心力や周囲の空気の流れが乱されて、とくC
フェースプレートのコーナ部に塗布むらを発生し、塗膜
の品質を低下させるという問題があった。
Therefore, not only is the usage efficiency of the coating fluid poor, but also the scattered droplets adhere to the coating film, contaminating it, and the centrifugal force caused by rotation and the flow of the surrounding air are disturbed.
There was a problem in that coating unevenness occurred at the corners of the face plate, deteriorating the quality of the coating film.

この発明は上記のような問題点を解消するため社なされ
たもので、塗液をフェースプレートの外表面の全体に均
一にかつ効率よく付着して、高品質な塗膜を形成するこ
とができる陰極線管のフェース面塗膜の製造方法を提供
することを目的とする。
This invention was developed to solve the above-mentioned problems, and allows the coating liquid to be applied uniformly and efficiently to the entire outer surface of the face plate to form a high-quality coating film. The object of the present invention is to provide a method for producing a coating film on the face of a cathode ray tube.

[課題を解決するための手段] この発明に係る陰極線管のフェース面塗膜の製造方法は
、陰極線管のフェースプレートとこれに対向させて配置
した噴霧装置の噴霧ノズル部とに互いに逆極性の電位を
与えた状態で、上記噴霧ノズル部から塗液を噴霧させる
ことを特徴とする。
[Means for Solving the Problems] A method for manufacturing a face coating film for a cathode ray tube according to the present invention is such that the face plate of the cathode ray tube and the spray nozzle portion of the spray device disposed opposite to the face plate have opposite polarities to each other. The method is characterized in that the coating liquid is sprayed from the spray nozzle section while a potential is applied.

[作用] この発明によれば、対向させて配置した陰極線管のフェ
ースプレートと噴霧装置の噴霧ノズル部とに互いに逆極
性の電位を与えることにより、フェースプレートと噴霧
ノズル部との間に静電界が発生される。これにより、帯
電されたフェースプレートの外表面とそれとは逆極性に
帯電された塗液の粒子との静電力により、塗液の粒子が
陰極線管のフェースプレートの外表面側に一様に引きつ
けられて付着し、そのフェースプレートの外表面の全域
にわたり、均一な塗膜を形成することができる。
[Function] According to the present invention, by applying potentials of opposite polarity to the face plate of the cathode ray tube and the spray nozzle portion of the spray device, which are arranged to face each other, an electrostatic field is created between the face plate and the spray nozzle portion. is generated. As a result, due to the electrostatic force between the charged outer surface of the faceplate and the coating fluid particles charged with the opposite polarity, the coating fluid particles are uniformly attracted to the outer surface of the cathode ray tube's faceplate. The surface of the face plate can be coated uniformly over the entire outer surface of the face plate.

[発明の実施例] 以下、この発明の一実施例を図面にもとづいて説明する
[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings.

第1図はこの発明の一実施例による陰極線管のフェース
面塗膜の製造方法を示す要部の断面図である。同図にお
いて、(12)は陰極線管で、この陰極線管(12)は
フェースプレート(0とファンネル部(13)とネック
部(18)とからなり、フェースプレート(4)の内面
にメタルバック膜(21)が形成されており、このメタ
ルバック膜(21)がファンネル部(13)およびネッ
ク部(19)の内面に形成された内部導電膜(6)を介
して高圧ボタン(5)に電気的に導通されている。
FIG. 1 is a sectional view of essential parts showing a method for manufacturing a face coating film of a cathode ray tube according to an embodiment of the present invention. In the figure, (12) is a cathode ray tube, and this cathode ray tube (12) consists of a face plate (0), a funnel part (13), and a neck part (18), and has a metal back film on the inner surface of the face plate (4). (21) is formed, and this metal back film (21) supplies electricity to the high voltage button (5) via the internal conductive film (6) formed on the inner surface of the funnel part (13) and neck part (19). is electrically conductive.

(1)は塗液(10)を収容する噴霧装置であり、導電
性の外囲器(22)の上面中央部に上方に突出させて噴
霧ノズル部(2)が形成されている。
(1) is a spray device that accommodates a coating liquid (10), and has a spray nozzle portion (2) formed in the center of the upper surface of a conductive envelope (22) so as to protrude upward.

つぎに、上記噴霧装置(1)を使用して、陰極線管(1
2)のフェースプレート(4)の外表面に塗膜を形成す
る方法について説明する。
Next, using the above spraying device (1), spray the cathode ray tube (1).
2) method of forming a coating film on the outer surface of the face plate (4) will be explained.

噴霧装置(1)の外囲器(22)に直流電圧源(3)を
介して一定の電圧を印加するとともに、この噴霧装置(
1)における噴霧ノズル部(2)の上方に陰極線管(1
2)をフェースダウンの状態で対向させて配置する。
A constant voltage is applied to the envelope (22) of the spray device (1) via the DC voltage source (3), and the spray device (
The cathode ray tube (1) is placed above the spray nozzle part (2) in
2) are placed face down and facing each other.

この陰極線管(12)の高圧ボタン(5)をアース線(
7)を介して接地することにより、この高圧ボタン(5
)に内部導電M(6)を介して導通されているメタルバ
ック膜(21)が静電誘導によって上記噴霧装置(1)
における噴霧ノズル部(2)に対して逆極性の電位とな
る。
Connect the high voltage button (5) of this cathode ray tube (12) to the ground wire (
This high voltage button (5) can be grounded via
) is electrically connected to the above-mentioned spray device (1) by electrostatic induction.
The potential is of opposite polarity to the spray nozzle section (2) at.

以上によって、上記噴j!装置(1)における噴霧ノズ
ル部(2)と陰極線管(12)のフェースプレート(4
)の内面のメタルバック膜(21)との間に静電界が発
生する。
By the above, the above jet j! The spray nozzle part (2) in the device (1) and the face plate (4) of the cathode ray tube (12)
) and the metal back film (21) on the inner surface thereof.

この状態で、噴霧装置(1)の噴霧ノズル部(2)より
塗液(10)を噴霧すると、この塗液(10)の粒子(
11)はメタルバック膜(21)に対して逆極性に帯電
されており、したがって、静電力によって粒子(11)
はフェースプレート(0側に引き付けられて、フェース
プレート(4)の外表面に付着し、フェースプレート(
4)の外表面の全面に所定の厚さの塗膜が形成される。
In this state, when the coating liquid (10) is sprayed from the spray nozzle part (2) of the spraying device (1), the particles of this coating liquid (10) (
11) is charged with the opposite polarity to the metal back film (21), and therefore the particles (11) are charged by electrostatic force.
is attracted to the face plate (0 side) and attaches to the outer surface of the face plate (4), and the face plate (
4) A coating film of a predetermined thickness is formed on the entire outer surface.

なお、上記実施例では、噴霧装置(1)側に高圧を印加
したが、陰極線管(12)の高圧ボタン(5)に高圧を
印加してメタルバックIl!(21)を高圧電位とする
一方、噴霧装置(1)の外囲器(22)をアース線を介
して接地しても、上記実施例と同様の効果を奏する。
In the above embodiment, high pressure was applied to the spray device (1), but high pressure was applied to the high pressure button (5) of the cathode ray tube (12) and the metal back Il! Even if (21) is set to a high voltage potential and the envelope (22) of the spray device (1) is grounded via a ground wire, the same effect as in the above embodiment can be obtained.

[発明の効果] 以上のように、この発明によれば、陰極線管のフェース
プレート外表面と塗液の粒子とを逆極性に帯電させて、
両者間の静電力により塗液をフェースプレートの外表面
に付着させるので、所定の塗膜を形成するうえで必要な
量の塗液を効率よく付着させて、塗液のロスをなくする
ことができる。また、静電力による付着であるから、フ
ェースプレートの外表面の全域に塗液をむらなく均一に
塗布できるとともに、飛散した液滴やはね返り液滴によ
る塗膜の汚染もなく、緻密で、かつ高品質の塗膜を形成
することができる。
[Effects of the Invention] As described above, according to the present invention, the outer surface of the face plate of the cathode ray tube and the particles of the coating liquid are charged to opposite polarities,
Since the coating liquid is attached to the outer surface of the face plate due to the electrostatic force between the two, the amount of coating liquid required to form the desired coating film can be efficiently applied, eliminating loss of coating liquid. can. In addition, since the adhesion is based on electrostatic force, the coating liquid can be evenly and evenly applied to the entire outer surface of the face plate, and there is no contamination of the coating film by scattered or rebounding droplets, resulting in a dense and high-quality coating. Able to form high quality coatings.

さらに、この発明による塗膜の製造方法は帯電防止膜の
製造に限られず、光吸収膜や防眩処理膜などの製造につ
いても同様の効果を奏することができる。
Furthermore, the method for producing a coating film according to the present invention is not limited to the production of antistatic films, but can also produce similar effects in the production of light-absorbing films, anti-glare treated films, and the like.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の一実施例による陰極線管のフェース
面塗膜の製造方法を示す要部の断面図、第2図は従来の
製造方法を示す正面図である。 (1)・・・噴霧装置、(2)・・・噴霧ノズル部、(
3)・・・直流電圧源、(4)・・・フェースプレート
、(6)・・・内部導電膜、(lO)・・・塗液、 (
12)・・・陰極線管。 なお、図中の同一符号は同一または相当部分を示す。 第1図
FIG. 1 is a sectional view of a main part showing a method for manufacturing a face coating film of a cathode ray tube according to an embodiment of the present invention, and FIG. 2 is a front view showing a conventional manufacturing method. (1)... Spray device, (2)... Spray nozzle part, (
3)...DC voltage source, (4)...face plate, (6)...inner conductive film, (lO)...coating liquid, (
12)...Cathode ray tube. Note that the same reference numerals in the figures indicate the same or corresponding parts. Figure 1

Claims (1)

【特許請求の範囲】[Claims] (1)塗液を収容する噴霧装置の噴霧ノズル部と陰極線
管のフェースプレートの外表面とを対向させて配置する
工程と、上記陰極線管のフェースプレートと上記噴霧装
置の噴霧ノズル部とに互いに逆極性の電位を与える工程
と、逆極性の電位を与えた状態で上記噴霧ノズル部から
塗液を噴霧させる工程とからなる陰極線管のフェース面
塗膜の製造方法。
(1) A step of arranging a spray nozzle portion of a spray device that accommodates a coating liquid and an outer surface of a face plate of a cathode ray tube so as to face each other; A method for producing a face coating film for a cathode ray tube, comprising the steps of applying a potential of opposite polarity and spraying a coating liquid from the spray nozzle while applying a potential of opposite polarity.
JP20053389A 1989-08-01 1989-08-01 Manufacturing method for paint film on faceplate of cathode-ray tube Pending JPH0364829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20053389A JPH0364829A (en) 1989-08-01 1989-08-01 Manufacturing method for paint film on faceplate of cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20053389A JPH0364829A (en) 1989-08-01 1989-08-01 Manufacturing method for paint film on faceplate of cathode-ray tube

Publications (1)

Publication Number Publication Date
JPH0364829A true JPH0364829A (en) 1991-03-20

Family

ID=16425890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20053389A Pending JPH0364829A (en) 1989-08-01 1989-08-01 Manufacturing method for paint film on faceplate of cathode-ray tube

Country Status (1)

Country Link
JP (1) JPH0364829A (en)

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