JPS63187529A - Method for forming code of cathode-ray tube - Google Patents
Method for forming code of cathode-ray tubeInfo
- Publication number
- JPS63187529A JPS63187529A JP62019001A JP1900187A JPS63187529A JP S63187529 A JPS63187529 A JP S63187529A JP 62019001 A JP62019001 A JP 62019001A JP 1900187 A JP1900187 A JP 1900187A JP S63187529 A JPS63187529 A JP S63187529A
- Authority
- JP
- Japan
- Prior art keywords
- code
- ray tube
- metal powder
- paint
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000003973 paint Substances 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 239000000126 substance Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229920002050 silicone resin Polymers 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 description 4
- 239000003550 marker Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012844 infrared spectroscopy analysis Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
- G09C5/00—Ciphering apparatus or methods not provided for in the preceding groups, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2209/00—Apparatus and processes for manufacture of discharge tubes
- H01J2209/46—Handling of tube components during manufacture
- H01J2209/463—Identifying or selecting component pieces
- H01J2209/466—Marking, e.g. bar-codes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、陰極線管の外囲器の特定位置に、生産管理
情報として読み取られる符号を設ける陰極線管の符号形
成方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a code forming method for a cathode ray tube, in which a code read as production control information is provided at a specific position on the envelope of the cathode ray tube.
製品の製造工程においては、製品の品種全自動認識して
、これに基づいて製品の生産管理が行なわれる。一般に
、品種を自動認識する手段としては、品種ごとに、たと
えば、ノ（−コードやマークコードなどの符号が印刷さ
れたラベルを貼付して、これを自動読取りするラベル方
式が普及している。In the product manufacturing process, product types are fully automatically recognized and product production management is performed based on this recognition. Generally, as means for automatically recognizing product types, a label method is widely used in which a label on which a code such as a ``-'' code or a mark code is printed is attached to each product type, and the label is automatically read.
ところが、陰極線管の製造工程では、数段階もの熱処理
工程や化学処理工程が存在するため、上記のような耐熱
性、耐化学性に劣るラベル方式を採用することは困難で
ある。However, in the manufacturing process of cathode ray tubes, there are several heat treatment steps and chemical treatment steps, so it is difficult to adopt the above-mentioned label method with poor heat resistance and chemical resistance.
そこで、耐熱性、耐化学性にすぐれた符号を形成した例
として、特開昭６０−８１７４４号には着色フリット等
の耐熱性マーキング剤から成る）く−コードを、陰極線
管の外囲器の側壁に印刷して、光学的もしくは磁気的手
段により読取ることが提案されている。また、レーザ光
等の高密度エネルギ照射手段により、陰極＠管の外囲器
の一部に、一定形状の溶融痕を形成させて、これを光学
的手段により符号として読取ることも考えられている。Therefore, as an example of forming a code with excellent heat resistance and chemical resistance, Japanese Patent Application Laid-Open No. 60-81744 describes a code made of a heat-resistant marking agent such as a colored frit, which is attached to the envelope of a cathode ray tube. It has been proposed to print on the side walls and read by optical or magnetic means. It is also being considered to form melting traces of a certain shape on a part of the envelope of the cathode@tube using high-density energy irradiation means such as laser light, and to read this as a code by optical means. .
ところが、着色フリット等の耐熱性マーキング剤を用い
て符号全形成する場合には、印刷法もしくは捺印法によ
らざるを得ないので、マーキング剤の塗布量の管理が煩
雑であり、また、符号のたれ、くずれ、欠けなどが生じ
やすいため高品質な符号の形成が難しいという問題点か
あつ之。これは、符号の安定な読取りに支＠をきたすこ
とになる。However, when forming the entire code using a heat-resistant marking agent such as colored frit, the printing method or stamping method must be used, which makes it complicated to manage the amount of marking agent applied, and the amount of marking agent applied is complicated. The problem is that it is difficult to form high-quality codes because they tend to sag, collapse, and chip. This will hinder stable reading of the code.
また、レーザ光等によって溶融痕を形成させて、これを
符号とする場合には、充分な幅と呆さを有する溶融痕を
形成しないと、高いコントラスト比、即ち照射部分と非
照射部分の光の反射率の差を得ることができない。この
ため、微少な符号や複雑な形状の符号を形成することが
困難であるという問題点があった。In addition, when forming melting traces using a laser beam or the like and using them as codes, it is necessary to form melting traces with sufficient width and sharpness, otherwise the contrast ratio will be high, i.e. the contrast between the irradiated and non-irradiated areas It is not possible to obtain the difference in reflectance. Therefore, there has been a problem in that it is difficult to form minute codes or codes with complicated shapes.
この発明は上記のような問題点を解消するためになされ
たもので、陰極線管の装造工程において。This invention was made to solve the above-mentioned problems in the process of assembling cathode ray tubes.
充分な耐熱性および耐化学性を備えた高品質で読取り信
頼性の高い符号を迅速に形成できるとともに、微細で複
雑な符号も形成できる陰極線管の符号形成方法を提供す
ることを目的とするものである。The object of the present invention is to provide a code forming method for a cathode ray tube that can quickly form high-quality codes with sufficient heat resistance and chemical resistance, have high reading reliability, and can also form fine and complex codes. It is.
この発明にかかる陰極線管の符号形成方法は、外囲器の
外周部の所定位置に、陰極線管の熱処理工程および化学
処理工程に耐える金属粉含有塗料を塗布し固着したのち
、上記固着した金属粉含有塗料上に、レーザ光照射手段
を用いて、表面塑性変形痕でなる符号を形成する。The code forming method for a cathode ray tube according to the present invention involves applying and fixing a metal powder-containing paint that can withstand the heat treatment process and chemical treatment process of the cathode ray tube to a predetermined position on the outer periphery of the envelope, and then A code consisting of surface plastic deformation marks is formed on the containing paint using a laser beam irradiation means.
この発明において、陰極線管の熱処理工描および化学処
理工程に耐える金属粉含有塗料は、レーザ光が照射され
て符号になる部分が、金属粉の動きで良好に表面塑性変
形されて、十分に黒色変化する。したがって、金属粉含
有塗料は、符号となったレーザ光照射部と、非照射部と
の光反射率の差が大きいので、符号の自動読取りが容易
である。In this invention, the metal powder-containing paint that can withstand the heat treatment and chemical treatment processes of cathode ray tubes is such that the portion that becomes a code when irradiated with laser light is well deformed by surface plasticity due to the movement of the metal powder, resulting in a sufficiently black color. Change. Therefore, in the metal powder-containing paint, since there is a large difference in light reflectance between the laser beam irradiated part, which becomes the code, and the non-irradiated part, automatic reading of the code is easy.
また、従来のような、レーザ光で外囲器に育娶溶融痕全
形成するものとは貝なり、レーザ光照射部と非照射部と
の光反射率の差を大きくするために、表面塑性変形痕全
幅広で深いものとする必要がない。このため、微細で複
雑な符号を形成することが可能になる。また、レーザ光
全金１粉含有塗料の表面層にのみ作用させれば十分であ
るので、レーザ光の外囲器への影響が極めて少ない。In addition, unlike the conventional method in which all the melting marks are formed on the envelope using a laser beam, surface plasticity is used to increase the difference in light reflectance between the laser beam irradiated area and the non-irradiated area. There is no need for the deformation scar to be wide and deep. Therefore, it becomes possible to form fine and complicated codes. In addition, since it is sufficient that the laser beam acts only on the surface layer of the paint containing all gold powder, the influence of the laser beam on the envelope is extremely small.
さらに、金属粉含有塗料は、陰極線管の外囲器への固着
が強固であり、この金属粉含有、愈科上に、符号がレー
ザ光で形成されるので、従来のようなマーキング材を用
いて符号全印刷するものとは異なり、たれ、くずれ、欠
は等がない高品質な符号が得られる。Furthermore, metal powder-containing paint has a strong adhesion to the cathode ray tube envelope, and since the code is formed on the metal powder-containing paint using laser light, it is difficult to use conventional marking materials. Unlike those in which the entire code is printed, high-quality codes with no sagging, fading, or missing parts can be obtained.
以下、この発明の一実施例を図面にしたがって説明する
。An embodiment of the present invention will be described below with reference to the drawings.
第１図において、（１）は陰極＠管、（２）は４欣線管
の外囲器であり、（１）は外囲器（２）の特定位置に形
成された符号である。ここでの符号（１）はバーコード
状の形態であるが、符号（１）は、数字９文字、ドツト
等であっても何ら差支えない。In FIG. 1, (1) is a cathode@tube, (2) is an envelope of a four-line tube, and (1) is a symbol formed at a specific position of the envelope (2). The code (1) here is in the form of a barcode, but the code (1) may also be nine numeric characters, a dot, or the like.
つぎに、上記符号（１）の形成方法全説明する。第２図
は、陰極線管に符号（支）を形成するためのシステムを
示す構成図である。図において、まず、外囲器（２）の
予め定められた特定位置に、塗料塗布手段（３）により
金属粉含有塗料（以下、「塗料」という。）Ｐが塗布さ
れる。この塗料Ｐの組成等の詳細については後述する。Next, the entire method for forming the above code (1) will be explained. FIG. 2 is a block diagram showing a system for forming a code (branch) on a cathode ray tube. In the figure, first, a metal powder-containing paint (hereinafter referred to as "paint") P is applied to a predetermined specific position of the envelope (2) by a paint application means (3). Details of the composition of this paint P will be described later.
つぎに、塗料Ｐ−１）ｉ塗布された外囲器（２）は、乾
燥炉（５）に入り、塗料Ｐが外囲器（２）の上に確実に
固着される。さらに、乾燥炉（５）を出た外囲器（２）
は、マーキングが行なわれる所定位置に位置決めされる
。位置決めが完了すると、コントローラ（６）が動作を
開始し、レーザ発掘器（７）にビーム発掘信号Ｓｌ ｋ
送るとともに、回転マスク（８）にに、所望の文字コー
ドのマスク位置を合わせるためのマスク同期信号８２
ｋ送出する。さらに、コントローラ（６）は、回転マス
ク（８）？通過したレーザ光ｌが、外囲器（２）上の塗
料Ｐの所定位置江正確に照射されるように、揺動ミラー
（９）に対して揺動角制御信号Ｓ８ を与える。Next, the envelope (2) coated with the paint P-1)i enters the drying oven (5), and the paint P is reliably fixed on the envelope (2). Furthermore, the envelope (2) that has left the drying oven (5)
is positioned at the predetermined position where marking is to be performed. When the positioning is completed, the controller (6) starts operation and sends a beam excavation signal Sl k to the laser excavator (7).
At the same time, a mask synchronization signal 82 is sent to align the mask position of the desired character code with the rotating mask (8).
k Send. Furthermore, the controller (6) has a rotating mask (8)? A swing angle control signal S8 is given to the swing mirror (9) so that the laser beam I that has passed therethrough is accurately irradiated on a predetermined position of the paint P on the envelope (2).
レーザ発掘器（７）かも発振されたレーザ光ｌは、固定
ミラーｏｃｔ’を経て、回転マスク（８）を通過する際
にコード化され、揺動ミラー（９）により方向制御され
、さらにレンズα◇により集光されてｍ外囲器（２）上
の塗料Ｐに到達する。その結果、塗料Ｐの表面は、レー
ザ光ｅの熱作用により照射部のみが黒色変化し、即ち通
過した回転マスク（８）の文字コードと同じ符号（１）
が塗料Ｐの表面に形成されること（てなる。The laser beam l emitted by the laser excavator (7) passes through a fixed mirror oct', is encoded as it passes through a rotating mask (8), is direction-controlled by an oscillating mirror (9), and is further passed through a lens α. The light is focused by ◇ and reaches the paint P on the m envelope (2). As a result, only the irradiated part of the surface of the paint P turns black due to the thermal action of the laser beam e, that is, the surface of the paint P changes to a black color (1), which is the same as the character code of the rotating mask (8) through which it has passed.
is formed on the surface of the paint P.
上記の動作を繰り返すことにより任意の桁数の符号を高
速に形成することができる。By repeating the above operations, a code with an arbitrary number of digits can be formed at high speed.
ここで、上記塗料Ｐは、金属粉としてのステンレス粉を
１２重量％、塗料基剤としてのシリコーン樹脂系フェス
２３０重量％含み、他に溶剤としてのトリクロールエタ
ンを含んでいる。上記溶剤は塗布後の乾燥工程で消失す
る。また、レーザ光１１−１．高速高出力が容易に得ら
れることから、ＴＥＡ−ＣＯ２（Ｔｒａｎｓｖｅｒｓｅ
ｌｙ Ｅｘｃｉｔｅｄ Ａｔｍｏｓｐｈｅｒｉｃｐｒｅ
ｓｓｕｒｅ ＣＯ２） レーザを用いている。レーザ
光ｌとしては、所定の出力が得られる限りＹＡＧ（ｙｔ
ｔｒｉｕｍ Ａｌｕｍｉｎｉｕｍ Ｑａｒｎｅｔ ）
ｖ−ザあるいは他のレーザを用いてもよい。Here, the paint P contains 12% by weight of stainless steel powder as a metal powder, 230% by weight of a silicone resin face as a paint base, and also contains trichloroethane as a solvent. The above solvent disappears during the drying process after coating. Moreover, the laser beam 11-1. TEA-CO2 (Transverse
ly Excited Atmospheric Pre
ssure CO2) laser is used. As the laser beam l, YAG (yt
Trium Aluminum Qarnet)
A v-laser or other lasers may also be used.
ここで、塗料Ｐがレーザ光ｌ？受けて黒色変化する原因
を考察した結果を述べる。まず、塗料の非変色部と黒色
部について赤外分光スペクトル分析を行なったが、両者
には著しい差異は認められず、したがって、シリコーン
樹脂系基剤の化学的変化による変色とは考えられない。Here, if the paint P is exposed to laser light l? This section describes the results of a study of the causes of the black color change. First, an infrared spectroscopic analysis was performed on the non-discolored area and the black area of the paint, but no significant difference was observed between the two, so it is not considered that the discoloration is due to a chemical change in the silicone resin base.
つぎに、塗料の黒色部についてＸ線回折を行なったが、
金属酸化物は見当らず、したがって、ステンレス初等ノ
金属粉の酸化による変色でもないと考えられる。Next, we performed X-ray diffraction on the black part of the paint.
No metal oxides were found, so it is thought that the discoloration was not due to oxidation of the elementary metal powder of the stainless steel.
さらに、塗料の非変色部、黒色部それぞれについて、Ｓ
Ｅ Ｍ （Ｓｃａｎｎｉｎｇ ＥｌｅＣｔｒＯｎ Ｍ
ｉｃｒｏｓｃｏｐｅ ）写真を撮影して検討すると、塗
料Ｐの非変色部の表面形状は、第３図（４）のように比
較的なだらかな凹凸を有するのに対し、塗料Ｐの黒色変
化部の表面形状は、第３図の）のように激しく荒れてい
る。Furthermore, for each non-discolored part and black part of the paint,
EM (Scanning EleCtrOn M
When examining photographs taken using an icroscope, the surface shape of the non-discolored portion of the paint P has relatively gentle unevenness as shown in Figure 3 (4), whereas the surface shape of the blackened portion of the paint P is The area is extremely rough as shown in Figure 3).
この結果から、黒色変化のメカニズムは次のように考察
できる。第８図（４）のレーザ光照射前の状態に対して
、レーザ光ｌを照射すると、第３図の）に示すように、
塗料Ｐ内に含有される金属初口がレーザ光ｅの熱作用に
より瞬間的に熱せられ、特にレーザ光ｌの熱作用？受け
やすい塗料Ｐの表面層側が著しく発熱し、その結果とし
て表面塑性変形を起こすものと考えられる。また、金属
粉＠を含有しない塗料Ｐの表面にレーザ照射しても明確
な黒色変化現象は認められない。このことから、高反射
率含有する金属粉（イ）が塗料Ｐ中に存在することが塗
料表面層のレーザ光ｌによる発熱を増大せしめていると
考えられる。From this result, the mechanism of black color change can be considered as follows. When the state before laser beam irradiation shown in FIG. 8 (4) is irradiated with laser beam l, as shown in ) in FIG. 3,
The metal inlet contained in the paint P is instantaneously heated by the thermal effect of the laser beam e, and especially by the thermal effect of the laser beam l? It is thought that the surface layer side of the paint P, which is more susceptible to heat generation, generates significant heat, resulting in surface plastic deformation. Further, even when the surface of the paint P that does not contain metal powder @ is irradiated with a laser, no clear black change phenomenon is observed. From this, it is considered that the presence of the metal powder (a) containing high reflectance in the paint P increases the heat generated by the laser beam L in the paint surface layer.
上記構成において、塗料Ｐは、シリコーン樹脂系の基剤
？き有しているので、陰極線管の熱処理工程および化学
処理工程、たとえば、前奏（スタビライス）工程、ブラ
ックマトリックス膜形成工程、螢光、膜形成工程、アル
ミ蒸着工程、焼成（ベークアウト）工程、フリットシー
ル工程、電子銃封入工程等に耐えることができるから、
符号（イ）が消失したり汚損することがない。また、塗
料Ｐはステンレス粉を含有しているので、レーザ光照射
部が表面塑性変形全促進されて、十分に黒色変化するこ
とができる。In the above configuration, the paint P is a silicone resin base. Since we have the heat treatment process and chemical treatment process of cathode ray tubes, such as pre-stabilization process, black matrix film formation process, fluorescence, film formation process, aluminum evaporation process, baking (bakeout) process, frit Because it can withstand sealing processes, electron gun encapsulation processes, etc.
The code (a) will not disappear or become defaced. Furthermore, since the paint P contains stainless steel powder, the surface plastic deformation of the laser beam irradiated area is fully promoted, and the area can be sufficiently turned black.
したがって、塗料Ｐは、符号四となったレーザ光照射部
と非照射部とのコントラスト比が大きい、つまり、光反
射率の差が大きいので、符号…の自動読取りが容易であ
る。Therefore, in the paint P, the contrast ratio between the laser beam irradiated part and the non-irradiated part, which is code 4, is large, that is, the difference in light reflectance is large, so that the code . . . can be easily read automatically.
また、符号翰となったレーザ光照射部と非照射部との光
反射率の差を大きくするために、表面塑性変形域を幅広
で深いものとする必要がない。このため、微細で複雑な
符号を形成することが可能となる。また、レーザ光ｌを
塗料Ｐの表面層にのみ作用させれば十分であるので、レ
ーザ光ｌの外囲器（２）への影響が極めて少ない。In addition, in order to increase the difference in light reflectance between the laser beam irradiated part and the non-irradiated part, which is a sign, it is not necessary to make the surface plastic deformation region wide and deep. Therefore, it is possible to form fine and complicated codes. Further, since it is sufficient to apply the laser beam l only to the surface layer of the paint P, the influence of the laser beam l on the envelope (2) is extremely small.
さらに、塗料Ｐは、陰極線管の外囲器（２）への固着が
強固であり、この塗料Ｐ上に、符号（１）がレーザ光ｌ
で形成されるので、たれ、くずれ、欠は等がない高品質
な符号（１）が得られる。Furthermore, the paint P has a strong adhesion to the envelope (2) of the cathode ray tube.
Since the code (1) is formed with a high quality code (1), there is no sagging, deformation, or chipping.
なお、この実施例では、塗料Ｐに含まれる金属初口とし
て、ステンレス粉を用いたが、この発明はこれに限定さ
れるものではなく、他の金属粉を用いてもよい。ここで
、他の金属粉に比べて、ステンレス粉またはアルミニウ
ム粉を用いれば、塗料Ｐの十分な黒色変化、つまり、高
８／Ｎ比が得られることがわかっている。In this example, stainless steel powder was used as the metal powder contained in the paint P, but the present invention is not limited thereto, and other metal powders may be used. Here, it has been found that the use of stainless steel powder or aluminum powder provides a sufficient black change in the paint P, that is, a high 8/N ratio, compared to other metal powders.
以上のようにこの発明によれば、陰極線管の熱処理工程
および化学処理工程に耐えるとともに、自動読取りが容
易な符号を形成することができ、微細で複雑な符号も精
度よく形成できる。また、このような符号が、たれ、く
ずれ、欠は等のない高品質なものとなる。さらに、レー
ザ光の外囲器への影響が極めて少ない。As described above, according to the present invention, it is possible to form a code that can withstand the heat treatment process and chemical treatment process of a cathode ray tube and is easy to read automatically, and even fine and complicated codes can be formed with high precision. Moreover, such a code will be of high quality without sagging, deformation, or missing parts. Furthermore, the influence of the laser beam on the envelope is extremely small.
第１図はこの発明の一実施例による陰極線管の符号形成
方法で符号が形成された陰極線管の概略図、第２図はこ
の発明の一実施例による陰極線管の符号形成方法を実現
するためのシステム構成図、第８図（５）は金属粉含有
塗料におけるレーザ光非照射部を示す断面模式図、第８
図ＣＢ）は金属粉含有塗料におけるレーザ光照射部を示
す断面模式図である。
（１）・・・陰極線管、（２）・・・外囲器、■・・・
符号、ｇ・・・レーザ光、Ｐ・・・金属粉含有塗料。
なお、図中、同一符号は同一または相当部分を示す。FIG. 1 is a schematic diagram of a cathode ray tube in which a code is formed by a code forming method for a cathode ray tube according to an embodiment of the present invention, and FIG. Figure 8 (5) is a schematic cross-sectional diagram showing the non-laser beam irradiation part of the metal powder-containing paint.
Figure CB) is a schematic cross-sectional view showing a laser beam irradiation part in a paint containing metal powder. (1)...Cathode ray tube, (2)...Envelope, ■...
Symbol: G: Laser light; P: Paint containing metal powder. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (3)
る符号を形成する陰極線管の符号形成方法において、上
記外囲器の外周部の所定位置に、陰極線管の熱処理工程
および化学処理工程に耐える金属粉含有塗料を塗布し固
着したのち、この固着した金属粉含有塗料上にレーザ光
照射手段を用いて表面塑性変形痕でなる符号を形成する
ことを特徴とする陰極線管の符号形成方法。(1) In a code forming method for a cathode ray tube, in which a code that can be read as manufacturing information is formed on the envelope of the cathode ray tube, a code that can be read as manufacturing information is formed at a predetermined position on the outer periphery of the envelope during the heat treatment process and chemical treatment process of the cathode ray tube. A code forming method for a cathode ray tube, which comprises applying and fixing a durable paint containing metal powder, and then forming a code consisting of surface plastic deformation marks on the fixed paint containing metal powder using a laser beam irradiation means.
はアルミニウム微粒子粉を含んでいる特許請求の範囲第
１項記載の陰極線管の符号形成方法。(2) The method for forming a code for a cathode ray tube according to claim 1, wherein the metal powder-containing paint contains fine stainless steel particles or fine aluminum particles.
んでいる特許請求の範囲第１項または第２項記載の陰極
線管の符号形成方法。(3) The method for forming a code for a cathode ray tube according to claim 1 or 2, wherein the metal powder-containing paint contains a silicone resin base.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62019001A JPS63187529A (en) | 1987-01-28 | 1987-01-28 | Method for forming code of cathode-ray tube |
| KR1019880000241A KR910002976B1 (en) | 1987-01-28 | 1988-01-15 | Sign forming method of cathod ray tube |
| EP88300680A EP0276995B1 (en) | 1987-01-28 | 1988-01-27 | Method of forming identifying indicium on cathode ray tubes |
| DE3888706T DE3888706T2 (en) | 1987-01-28 | 1988-01-27 | Process for applying identification marks on cathode ray tubes. |
| US06/148,949 US4791267A (en) | 1987-01-28 | 1988-01-27 | Method of forming identifying indicium on cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62019001A JPS63187529A (en) | 1987-01-28 | 1987-01-28 | Method for forming code of cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63187529A true JPS63187529A (en) | 1988-08-03 |
| JPH0577136B2 JPH0577136B2 (en) | 1993-10-26 |
Family
ID=11987301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62019001A Granted JPS63187529A (en) | 1987-01-28 | 1987-01-28 | Method for forming code of cathode-ray tube |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS63187529A (en) |
| KR (1) | KR910002976B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498251U (en) * | 1990-08-08 | 1992-08-25 | ||
| US5593057A (en) * | 1993-09-10 | 1997-01-14 | Nokia Technology Gmbh | Identification marks of picture tube parts |
| WO2006109473A1 (en) * | 2005-04-11 | 2006-10-19 | Nippon Electric Glass Co., Ltd. | Glass panel for cathode ray tube |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07242346A (en) * | 1994-03-04 | 1995-09-19 | Nec Corp | Paper feeding device |
-
1987
- 1987-01-28 JP JP62019001A patent/JPS63187529A/en active Granted
-
1988
- 1988-01-15 KR KR1019880000241A patent/KR910002976B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498251U (en) * | 1990-08-08 | 1992-08-25 | ||
| US5593057A (en) * | 1993-09-10 | 1997-01-14 | Nokia Technology Gmbh | Identification marks of picture tube parts |
| WO2006109473A1 (en) * | 2005-04-11 | 2006-10-19 | Nippon Electric Glass Co., Ltd. | Glass panel for cathode ray tube |
Also Published As
| Publication number | Publication date |
|---|---|
| KR910002976B1 (en) | 1991-05-11 |
| JPH0577136B2 (en) | 1993-10-26 |
| KR880009329A (en) | 1988-09-14 |
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