JPH0660761A - Manufacture of display part - Google Patents

Manufacture of display part

Info

Publication number
JPH0660761A
JPH0660761A JP23535292A JP23535292A JPH0660761A JP H0660761 A JPH0660761 A JP H0660761A JP 23535292 A JP23535292 A JP 23535292A JP 23535292 A JP23535292 A JP 23535292A JP H0660761 A JPH0660761 A JP H0660761A
Authority
JP
Japan
Prior art keywords
outermost layer
resin
layer
laser
pattern
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
JP23535292A
Other languages
Japanese (ja)
Inventor
Toshiyuki Kawaguchi
利行 川口
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.)
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Polymer Co Ltd
Shin Etsu Chemical Co Ltd
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 Shin Etsu Polymer Co Ltd, Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Polymer Co Ltd
Priority to JP23535292A priority Critical patent/JPH0660761A/en
Publication of JPH0660761A publication Critical patent/JPH0660761A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H01H2009/187Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks having symbols engraved or printed by laser

Landscapes

  • Illuminated Signs And Luminous Advertising (AREA)
  • Manufacture Of Switches (AREA)

Abstract

PURPOSE:To provide a manufacturing method of display parts having high brightness and chroma of patterns such as etched letters and signs. CONSTITUTION:Patterns 4 such as optional letters and signs are formed on the most outer layer 3 of coloring layers formed on a resin molded product 1 by etching by radiating ittrium-aluminum-garnet laser. In this case, an adsorptive material which can well adsorb the laser energy is stuck to the most outer layer 3 previously and after the letters and signs are formed by etching, the adsorptive material is removed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、電卓、プッシュホン、
計測器、各種リモコンなどの電気部品に装着されるキー
トップ、あるいは自動車の電装操作部に装着されるスイ
ッチノブなどの表示部品の製造方法に関するものであ
る。
BACKGROUND OF THE INVENTION The present invention relates to a calculator, a touch-tone telephone,
The present invention relates to a method for manufacturing a key top mounted on electric parts such as a measuring instrument and various remote controls, or a display part such as a switch knob mounted on an electric operation section of an automobile.

【0002】[0002]

【従来の技術】従来の表示部品は、樹脂成型品の最外層
表面に、任意の文字や記号等のパターン(以下単にパタ
ーンと称する)をマスク印刷したり、あるいはパターン
が照光表示されるように抜き文字加工したものであった
が、品位や生産性の点から、図3(a),(b)に示す
ように、樹脂成型品(基体)1上に着色層である内側層
2、最外層3を順次形成し、最外層3にイットリウム−
アルミニウム−ガーネット(YAG)レーザを照射して
パターン4を刻設し、最外層3の下に現れた内側層2と
最外層3との色差により、パターン4を認識する表示部
品5が増加している。
2. Description of the Related Art A conventional display component is such that a pattern of arbitrary characters or symbols (hereinafter simply referred to as a pattern) is mask-printed on the outermost layer surface of a resin molded product or the pattern is illuminated. Although the characters were processed by blank characters, from the viewpoint of quality and productivity, as shown in FIGS. 3 (a) and 3 (b), the inner layer 2 which is a colored layer on the resin molded product (base) 1, The outer layer 3 is sequentially formed, and yttrium is formed on the outermost layer 3.
The pattern 4 is engraved by irradiating an aluminum-garnet (YAG) laser, and the color difference between the inner layer 2 and the outermost layer 3 appearing under the outermost layer 3 increases the number of display components 5 that recognize the pattern 4. There is.

【0003】[0003]

【発明が解決しようとする課題】しかしこの製造方法に
おいては、YAGレーザ加工性、表示品位を考慮し、レ
ーザエネルギーを吸収し易くしようとして、着色した最
外層にカーボン粉やレーザエネルギーの吸収の良い金属
粉、すなわち明度、彩度の低い金属粉を混入させていた
ため、近年デザインの多様性、ファッション性から明
度、彩度が高い表示部品が望まれているにもかかわら
ず、最外の着色層の明度、彩度が低い表示部品しか提供
できず、市場の要求に十分答えることができなかった。
However, in this manufacturing method, in consideration of the YAG laser processability and display quality, the colored outermost layer has good absorption of carbon powder and laser energy in order to easily absorb the laser energy. Since metal powder, that is, metal powder with low lightness and saturation is mixed in, the display layer with high lightness and saturation is desired in recent years due to the variety of designs and fashionability, but the outermost colored layer. We were only able to provide display parts with low brightness and saturation, and we were unable to fully meet market demands.

【0004】この明度、彩度が低い点をさらに詳しく説
明すると、樹脂成型品の上に形成した最外層を直接レー
ザにより刻設する際、最外層は通常の着色顔料、染料の
ほか、YAGレーザ加工性の点からグラファイト、カー
ボン、ケイ素、スズ、クロム、アルミ等の粉体を混入し
ているので、その色は黒を主にするか、他の色であって
も明度、彩度が低いものしか製造することができなかっ
た。
Explaining in more detail the low lightness and saturation, when the outermost layer formed on the resin molded product is directly engraved by a laser, the outermost layer is a usual coloring pigment, dye, or YAG laser. From the viewpoint of workability, powders such as graphite, carbon, silicon, tin, chrome, and aluminum are mixed, so the color is mainly black or other colors have low brightness and saturation. I could only manufacture things.

【0005】またこのほか最外層にパターンをYAGレ
ーザで刻設する方法としては、最外層と所望の色を有す
る内側層との間にレーザエネルギーの吸収の良い吸収性
物質からなる層、すなわち前記した材料からなる薄膜あ
るいはこれらの粉体を含むレーザエネルギーの吸収の良
い吸収層を設け、最外層を透してこの吸収層をレーザに
より加熱してパターンを刻設すると同時に、最外層を消
失させる方法も行われているが、パターンの輪郭に沿っ
て吸収層の色が現れたり、輪郭が不明瞭だったり、吸収
層に接する内側層をも刻設し透過光のムラが生じるな
ど、生産性を低下させ、表示部品としての外観上の品位
を低下するという不利、不具合が生じていた。
Further, as a method of engraving a pattern on the outermost layer with a YAG laser, a layer made of an absorptive material having a good absorption of laser energy between the outermost layer and the inner layer having a desired color, that is, the above-mentioned A thin film made of the above material or an absorption layer containing these powders that absorbs laser energy well is provided, the outermost layer is penetrated and the absorption layer is heated by a laser to form a pattern, and at the same time, the outermost layer disappears. Although the method is also used, the color of the absorption layer appears along the contour of the pattern, the contour is not clear, the inner layer in contact with the absorption layer is also engraved, and unevenness of transmitted light occurs And the appearance quality as a display component is lowered, which is a disadvantage and a problem.

【0006】[0006]

【課題を解決するための手段】本発明は、上記した従来
の問題を解決する製造方法であって、特には市場の要求
が強い、鮮やかかつ明るい色をもつ表示部品を製造する
方法を提供するものであって、これは樹脂成型品の上に
形成した着色層の最外層、好ましくはその一部に、YA
Gレーザを照射して任意のパターンを刻設する際、あら
かじめ最外層表面にレーザエネルギーの吸収の良い吸収
性物質を付着させ、パターンを刻設した後、残った吸収
性物質を除去することを特徴とする表示部品の製造方法
を要旨とする。
SUMMARY OF THE INVENTION The present invention provides a manufacturing method for solving the above-mentioned conventional problems, and in particular, a method for manufacturing a display component having a bright and bright color, which is strongly demanded by the market. Which is the outermost layer of the colored layer formed on the resin molded product, preferably a part thereof,
When irradiating a G laser to engrave an arbitrary pattern, an absorptive substance having a good absorption of laser energy is attached to the outermost layer surface in advance, and after engraving the pattern, the remaining absorptive substance is removed. The gist is a method of manufacturing a characteristic display component.

【0007】本発明は、例えば波長が0.9 〜1.1 ×10-6
mのYAGレーザに対し、吸収率が26〜73%と高い吸収
性物質を最外層表面に付着させる結果、最外層の明度、
彩度に影響されずに、最外層表面に付着した吸収性物質
をレーザにより容易に加熱、気化させ、同時に最外層を
も加熱、気化させ所望のパターンを刻設するものであ
る。
In the present invention, for example, the wavelength is 0.9 to 1.1 × 10 -6
As a result of adhering an absorptive material having a high absorptivity of 26 to 73% to the outermost layer surface for the YAG laser of m, the brightness of the outermost layer,
The absorbent material attached to the surface of the outermost layer is easily heated and vaporized by the laser without being affected by the saturation, and at the same time, the outermost layer is also heated and vaporized to form a desired pattern.

【0008】表示部品の母体となる基体としての樹脂成
型品は、表示部品に要求される耐熱性、機械的強度、光
学的物性を考慮して、アクリロニトリル−ブタジエン−
スチレン(ABS)樹脂、アクリロニトリル−スチレン
(AS)樹脂、メタクリル樹脂、塩化ビニル樹脂、ポリ
エチレン樹脂、ポリプロピレン樹脂などの汎用プラスチ
ックス、ポリカーボネート樹脂、ポリアセタール樹脂、
ポリアミド樹脂、ポリフェニレンサルフィッド樹脂など
のエンジニアリングプラスチックスから成る。これを視
認上所望の色とする場合は、予めアゾ基、ニトロソ基、
ニトロ基等を有する有機顔料や酸化チタン、亜鉛華、ベ
ンガラ、酸化クロム等の無機顔料の着色剤を練り込んだ
ものを射出成形等により賦形するが、所望の色からなる
インクを基体の少なくとも一面にコーティングして設け
るなどすればよい。
A resin molded article as a base material of a display component is acrylonitrile-butadiene-based resin in consideration of heat resistance, mechanical strength and optical properties required for the display component.
Styrene (ABS) resin, acrylonitrile-styrene (AS) resin, methacrylic resin, vinyl chloride resin, polyethylene resin, polypropylene resin and other general-purpose plastics, polycarbonate resin, polyacetal resin,
It consists of engineering plastics such as polyamide resin and polyphenylene sulfide resin. In order to make this a desired color visually, in advance, azo group, nitroso group,
An organic pigment having a nitro group or the like and an inorganic pigment such as titanium oxide, zinc oxide, red iron oxide, or chromium oxide, which is kneaded with a colorant, is shaped by injection molding or the like. It may be provided by coating on one surface.

【0009】このコーティング用のインクのバインダー
は、ポリエステル樹脂、メタクリル樹脂、ポリウレタン
樹脂、エポキシ樹脂、ポリカーボネート樹脂、シリコー
ン樹脂等か、これらの変成体、複合体から選べばよい
が、基体との密着性を考慮して、一般には樹脂成型品と
同系の樹脂成分とすることがよい。コーティング方法は
スプレーコーティング、ロール印刷、スクリーン印刷、
タンポ印刷等常法が使用できる。
The binder of the coating ink may be selected from polyester resin, methacrylic resin, polyurethane resin, epoxy resin, polycarbonate resin, silicone resin, etc., or their modified products or composites, but the adhesion to the substrate In consideration of the above, it is generally preferable to use the same resin component as that of the resin molded product. The coating method is spray coating, roll printing, screen printing,
Conventional methods such as tampo printing can be used.

【0010】またパターンを表示部品の裏側から照光す
るときは、着色した内側層(複数層からなる場合を含
む)が少なくとも5%以上の全光線透過率をもつよう
に、充填剤量や層厚を調整する必要がある。最外層も前
記した方法と同様に設ければよいが、その厚さは3〜40
×10-6m、好ましくは5〜25×10-6mとするのがよく、
これより薄いと着色性に乏しく、厚いと平滑性が悪くな
ると共にYAGレーザ加工性が低下する。
When the pattern is illuminated from the back side of the display component, the amount of the filler and the layer thickness are adjusted so that the colored inner layer (including the case of plural layers) has a total light transmittance of at least 5% or more. Need to be adjusted. The outermost layer may be provided in the same manner as described above, but the thickness is 3-40.
X10 -6 m, preferably 5 to 25 x 10 -6 m,
When it is thinner than this range, the coloring property is poor, and when it is thicker, the smoothness is deteriorated and the YAG laser processability is deteriorated.

【0011】次いで最外層(着色層が一層のみの場合は
内側層が最外層となる)表面上の少なくともパターンを
刻設したい箇所に、吸収性物質を付着させる。これはフ
ァーネスブラック、チャンネルブラック、ケッチェンブ
ラック、アセチレンブラック等のカーボンブラック、グ
ラファイト、亜鉛、テルル、錫、クロム、モリブデン、
タングステン、ケイ素、バナジウ、鉄、アルミニウム、
ニッケル、マグネシウム等の一種または二種以上の混合
物や合金類、酸化物が選択される。
Next, an absorptive substance is attached to at least a portion on the surface of the outermost layer (the inner layer is the outermost layer in the case where there is only one colored layer) where the pattern is to be formed. This is carbon black such as furnace black, channel black, ketjen black, acetylene black, graphite, zinc, tellurium, tin, chromium, molybdenum,
Tungsten, silicon, vanadium, iron, aluminum,
One or a mixture of two or more kinds of nickel, magnesium and the like, alloys and oxides are selected.

【0012】吸収性物質が粉体である場合は、YAGレ
ーザ加工性や付着させる作業性から10×10-6m〜10×10
-9mの粒径のものが好ましい。最外層表面上への付着
は、後の工程で除去するため強固に密着させる必要はな
いので、粉体を90〜120 ×103V で帯電させ、接地され
た樹脂成型品や内側層に静電吸着させる静電スプレー法
や、該粉体をバインダー中に分散させたインクを前記と
同様にコーティングする方法や、スパッタリング、蒸着
により薄膜として設けるなど既存の方法が採用される。
静電スプレー法で付着力が不足のときは、あらかじめ最
外層表面に、これを侵さずに濡れ性の良い熱可塑性結着
剤や高沸点溶液を塗布しておくことも可能である。
When the absorptive substance is a powder, it is 10 × 10 −6 m to 10 × 10 6 from the viewpoint of YAG laser processability and workability of attaching.
A particle size of -9 m is preferred. Since adhesion to the outermost layer surface is removed in a later step, it is not necessary to firmly adhere to it, so the powder is charged at 90 to 120 × 10 3 V and statically attached to the grounded resin molded product or inner layer. An electrostatic spray method of electroadsorption, a method of coating an ink in which the powder is dispersed in a binder in the same manner as described above, or an existing method such as forming a thin film by sputtering or vapor deposition are employed.
When the adhesive force is insufficient by the electrostatic spray method, it is possible to previously apply a thermoplastic binder having a high wettability or a high boiling point solution to the outermost layer surface without attacking the outermost layer surface.

【0013】粉体を分散させるインクのバインダーとし
ては、ポリビニルアルコール、ナイロン(商品名)樹脂
等の水溶液、合成ゴム、ポリエステル樹脂、アクリル樹
脂、シリコーン樹脂、フッソ樹脂等のエマルジョン溶
液、その他合成樹脂の有機溶剤溶液が選択されるが、漏
れ性と侵食性を考慮し、粘着剤、レベリング剤、分散
剤、界面活性剤などを適宜加えることは任意とされる。
なおまたこのものは前記した静電スプレー法における熱
可塑性結着剤としても使用することができる。YAGレ
ーザ加工は、上記の付着した吸収性物質が乾燥した状
態、あるいは除去工程の容易性から湿潤状態で行っても
よいが、加えられた溶液の乾燥速度はYAGレーザ加工
にさしさわりのないよう十分遅いことは言うまでもな
い。
As the binder of the ink for dispersing the powder, an aqueous solution of polyvinyl alcohol, nylon (trade name) resin or the like, an emulsion solution of synthetic rubber, polyester resin, acrylic resin, silicone resin, fluorine resin or the like, or other synthetic resin Although an organic solvent solution is selected, it is optional to appropriately add an adhesive, a leveling agent, a dispersant, a surfactant, etc. in consideration of leakiness and erosion.
Furthermore, this can also be used as a thermoplastic binder in the electrostatic spraying method described above. The YAG laser processing may be performed in a dry state of the above-mentioned adsorbed substance adsorbed, or in a wet state because of the ease of the removal process, but the drying speed of the added solution is sufficient so as not to be suitable for YAG laser processing. Not to mention that it's late.

【0014】ここで使用するYAGレーザは、波長 0.9
〜1.1 ×10-6mのパルス発振タイプで、出力 600W程度
のものが使用され、1パルスの出力とその繰り返し周波
数の積で表される出力によって加工条件が制御される。
任意のパターンをYAGレーザ加工により刻設した後、
残存する吸収性物質はハケ、あるいは高速の水、風等に
より除去し、必要であれば超音波洗浄等により洗浄また
は後洗浄する。吸収性物質が金属であり、薄膜として基
体上に設けられているときには、密着が比較的強固なこ
とが多いので、その除去には酸化剤により剥離し洗浄す
ることが望ましい。
The YAG laser used here has a wavelength of 0.9.
A pulse oscillation type of ~ 1.1 x 10 -6 m with an output of about 600 W is used, and the processing conditions are controlled by the output represented by the product of the output of 1 pulse and its repetition frequency.
After engraving any pattern by YAG laser processing,
The remaining absorbent substance is removed by brushing, high-speed water, wind, or the like, and if necessary, washed by ultrasonic cleaning or post-cleaning. When the absorptive substance is a metal and is provided as a thin film on the substrate, the adhesion is often relatively strong. Therefore, it is desirable to remove and wash with an oxidant to remove it.

【0015】[0015]

【作用】最外層表面に付着した吸収性物質はYAGレー
ザからエネルギーを吸収して急速に発熱、昇温し、最外
層とともに気化して内側層が露出し、最外層と内側層の
色差により記号が明瞭に読み取られる。
The absorptive substance adhering to the outermost layer surface absorbs energy from the YAG laser and rapidly heats up and rises in temperature, vaporizes together with the outermost layer and the inner layer is exposed, and the color difference between the outermost layer and the inner layer causes a symbol. Is clearly read.

【0016】[0016]

【実施例】【Example】

(実施例1)図2(a)に示すように、透明のアクリル
樹脂から成る樹脂成型品(基体)1上に、明度 7.5の白
色の熱硬化性アクリル系塗料をロール印刷により塗布
し、厚さ20×10-6mの白色の内側層2を設け、さらにこ
の上に、マンセル色票系にて明度5、彩度14の赤色の同
系の塗料により厚さ15×10-6mの赤色の最外層3を設け
試料A0 とする。つぎに図2(b)に示すように、白色
の内側層2と赤色の最外層3との間に厚さ約 1,000Åの
クロム金属薄膜よりなるレーザエネルギーの吸収の良い
吸収層6を設けたものを試料B0 とする。つぎに図1
(a),(b)に示すように、6Bの鉛筆で試料A0
0 の上面に黒色層を形成し吸収層7としたものを、そ
れぞれ試料A1 、B1 とした。ついでA1 、B1 を10ジ
ュール/パルスのエネルギーを有するYAGレーザを数
パルス照射してパターン(図3(a)参照)を刻設し、
洗剤を含む超音波洗浄機にて洗浄し、外観および背部の
光源8からの透過照明の下で観察した結果を表1に示
す。 (比較例1)なお比較のため試料A0 、B0 についても
同条件のレーザで加工したものも表1にあわせて示す。
明度、彩度の測定にはミノルタカメラ(株)製、色彩色
差計を使用した。
(Example 1) As shown in FIG. 2 (a), a white thermosetting acrylic paint having a lightness of 7.5 was applied by roll printing on a resin molding (base) 1 made of a transparent acrylic resin, A white inner layer 2 with a size of 20 × 10 -6 m is provided, and a red color with a thickness of 15 × 10 -6 m is formed on the inner layer 2 by a Munsell color chart system with a red lightness of 5 and a saturation of 14 The outermost layer 3 is provided as Sample A 0 . Next, as shown in FIG. 2B, an absorption layer 6 made of a chromium metal thin film having a thickness of about 1,000 Å and having a good absorption of laser energy is provided between the white inner layer 2 and the red outermost layer 3. This is designated as sample B 0 . Next, Figure 1
As shown in (a) and (b), a sample A 0 with a pencil of 6B,
Samples A 1 and B 1 were obtained by forming a black layer on the upper surface of B 0 to form the absorption layer 7. Then, A 1 and B 1 are irradiated with several pulses of a YAG laser having an energy of 10 joules / pulse to engrave a pattern (see FIG. 3A),
Table 1 shows the appearance and results of observation under transmitted illumination from the back light source 8 after cleaning with an ultrasonic cleaner containing a detergent. Comparative Example 1 For comparison, Table 1 also shows samples A 0 and B 0 processed by the laser under the same conditions.
A color difference meter manufactured by Minolta Camera Co., Ltd. was used for the measurement of lightness and saturation.

【0017】[0017]

【表1】 明度、彩度:◎印は良、△印はやや、×印は不良[Table 1] Lightness / Saturation: ◎ is good, △ is a little, × is bad

【0018】(実施例2)淡黄色のポリカボーネートか
ら成る樹脂成型品(基体)1(レーザ加工面は10mmR、
加工面積13×28mm2 )の表面に淡青色(マンセル色票系
にて明度6、彩度10)のUV硬化性のアクリルウレタン
系塗料を、スプレーコーティングして18×10-6mの最外
層を設けたものを試料C0 とし、さらに試料C0 の外側
に厚さ約1,000 Åのニッケル薄膜をスパッタリングして
吸収層を設けたものを試料C1 、試料C0 の外側に人造
グラファイト(平均粒径2×10-6m、配合量7wt%)
をナイロン(商品名)水溶液のバインダーに混入したイ
ンクをスプレーコーティングして、厚さ20×10-6mの吸
収層を設けたものを試料C2 、試料C0 の外側にクロロ
プレンゴムの高沸点石油スピリット溶液(固形分35wt
%、フェノール系粘着付与剤含む)を結着剤として厚さ
10×10-6mになるよう塗布し、アルミニウム粉(平均粒
径 0.5×10-6m)を均一に打粉して吸収層を形成したも
のを試料C3 とした。以上の試料C1 ,C2 ,C3 に、
実施例1と同じ条件でYAGレーザ加工により線幅 0.5
mmのアルファベット文字を刻設し、試料C1 は 0.3規定
の塩酸により除去し、試料C3 はトルエン溶剤を含むウ
エスで払拭きした後、他は実施例1と同様に水洗し、実
施例1と同様の方法で明度、彩度を観察し、その結果を
表2に示す。 (比較例2)なお比較のため試料C0 についても同条件
のレーザで加工したものも表2にあわせて示す。
(Embodiment 2) Resin molded product (base) 1 made of pale yellow polycarbonate (laser processed surface is 10 mmR,
UV-curable acrylic urethane paint of light blue (Munsell color chart system, lightness 6, saturation 10) is spray-coated on the surface of processing area 13 × 28 mm 2 ) and the outermost layer of 18 × 10 -6 m. Sample C 0 is provided with an absorption layer formed by sputtering a nickel thin film having a thickness of about 1,000 Å on the outside of Sample C 0 , and samples C 1 and C 0 have artificial graphite (average). Particle size 2 × 10 -6 m, compounding amount 7 wt%)
Is spray-coated with ink mixed with a binder of nylon (trade name) aqueous solution and provided with an absorption layer with a thickness of 20 × 10 -6 m. Sample C 2 and sample C 0 have a high boiling point of chloroprene rubber on the outside. Petroleum spirit solution (solid content 35 wt
%, Including phenol-based tackifier) as a binder
Sample C 3 was prepared by applying 10 × 10 −6 m so that aluminum powder (average particle size 0.5 × 10 −6 m) was uniformly dusted to form an absorption layer. For the above samples C 1 , C 2 and C 3 ,
A line width of 0.5 was obtained by YAG laser processing under the same conditions as in Example 1.
mm letters are engraved, Sample C 1 is removed with 0.3 N hydrochloric acid, Sample C 3 is wiped with a waste containing a toluene solvent, and then the other samples are washed with water in the same manner as in Example 1 to obtain Example 1. The lightness and the saturation were observed by the same method as in the above, and the results are shown in Table 2. (Comparative Example 2) For comparison, Table 2 also shows the sample C 0 processed by the laser under the same conditions.

【0019】[0019]

【表2】 明度、彩度:◎印は良、〇印はやや良、×印は不良[Table 2] Lightness / Saturation: ◎ is good, ◯ is good, X is bad

【0020】[0020]

【発明の効果】本発明の製造方法によれば、最外層表面
に吸収性物質を付着したことから、従来YAGレーザに
よる刻設が不可能、あるいは困難とされていた最外層の
色の明度、彩度の高い表示部品を、外観上の品位を損な
うことなく、生産性も高く容易に提供することができ
る。また前記した主効果のほか、従来最外層表面が平滑
でなく、段差やうねりがある場合、レーザビームの焦点
が定まらずパターンの輪郭が不鮮明になり易かったが、
本発明の製造方法ではYAGレーザ加工性が高まったこ
とから、不良品が低減し表示部品の最外層表面の形状に
ついても自由度が広がった。
According to the manufacturing method of the present invention, since the absorptive substance is adhered to the surface of the outermost layer, the lightness of the color of the outermost layer, which is conventionally impossible or difficult to engrave with a YAG laser, It is possible to easily provide a highly saturated display component with high productivity without impairing the appearance quality. In addition to the main effects described above, when the surface of the outermost layer is conventionally not smooth and there is a step or undulation, the focus of the laser beam is not fixed and the contour of the pattern tends to be unclear,
In the manufacturing method of the present invention, since the YAG laser processability is improved, the number of defective products is reduced and the degree of freedom in the shape of the outermost layer surface of the display component is expanded.

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

【図1】(a),(b)はそれぞれ実施例1における試
料A1 ,B1 の断面図である。
1A and 1B are cross-sectional views of samples A 1 and B 1 in Example 1, respectively.

【図2】(a),(b)はそれぞれ比較例1における試
料A0 ,B0 の断面図である。
2A and 2B are cross-sectional views of Samples A 0 and B 0 in Comparative Example 1, respectively.

【図3】従来の方法で製造された表示部品の(a)は平
面図、(b)は(a)のX−X線に沿う断面図である。
3A is a plan view of a display component manufactured by a conventional method, and FIG. 3B is a sectional view taken along line XX of FIG.

【符号の説明】[Explanation of symbols]

1:樹脂成型品(基体) 5:表示部品 2:内側層 6:吸収層 3:最外層 7:吸収層 4:パターン 8:光源 1: Resin molded product (base) 5: Display component 2: Inner layer 6: Absorption layer 3: Outermost layer 7: Absorption layer 4: Pattern 8: Light source

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 樹脂成型品の上に形成した着色層の最外
層に、イットリウム−アルミニウム−ガーネットレーザ
を照射して任意の文字、記号等のパターンを刻設する
際、あらかじめ最外層表面にレーザエネルギーの吸収の
良い吸収性物質を付着させ、文字、記号等のパターンを
刻設した後、残った吸収性物質を除去することを特徴と
する表示部品の製造方法。
1. When irradiating a yttrium-aluminum-garnet laser on the outermost layer of the colored layer formed on a resin molded product to engrave a pattern of arbitrary characters, symbols, etc., a laser is previously formed on the outermost layer surface. A method for manufacturing a display component, comprising depositing an absorptive substance having good energy absorption, engraving a pattern of characters, symbols, etc., and removing the remaining absorptive substance.
JP23535292A 1992-08-11 1992-08-11 Manufacture of display part Pending JPH0660761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23535292A JPH0660761A (en) 1992-08-11 1992-08-11 Manufacture of display part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23535292A JPH0660761A (en) 1992-08-11 1992-08-11 Manufacture of display part

Publications (1)

Publication Number Publication Date
JPH0660761A true JPH0660761A (en) 1994-03-04

Family

ID=16984821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23535292A Pending JPH0660761A (en) 1992-08-11 1992-08-11 Manufacture of display part

Country Status (1)

Country Link
JP (1) JPH0660761A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006190498A (en) * 2004-12-28 2006-07-20 Polymatech Co Ltd Key top, key sheet, push-button device, and manufacturing method of key top
JP2008023922A (en) * 2006-07-25 2008-02-07 Nagashima Kogei Kk Halo pseudo incrustation decorative object
JP2017044867A (en) * 2015-08-26 2017-03-02 株式会社ハーマン Segment type indicator
JP2017044866A (en) * 2015-08-26 2017-03-02 株式会社ハーマン Segment type indicator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006190498A (en) * 2004-12-28 2006-07-20 Polymatech Co Ltd Key top, key sheet, push-button device, and manufacturing method of key top
JP2008023922A (en) * 2006-07-25 2008-02-07 Nagashima Kogei Kk Halo pseudo incrustation decorative object
JP2017044867A (en) * 2015-08-26 2017-03-02 株式会社ハーマン Segment type indicator
JP2017044866A (en) * 2015-08-26 2017-03-02 株式会社ハーマン Segment type indicator

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