JP2004130649A - Material inside decorating method, laminate with material inside decorating part, and multiregionalized light transmitting material - Google Patents

Material inside decorating method, laminate with material inside decorating part, and multiregionalized light transmitting material Download PDF

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Publication number
JP2004130649A
JP2004130649A JP2002297059A JP2002297059A JP2004130649A JP 2004130649 A JP2004130649 A JP 2004130649A JP 2002297059 A JP2002297059 A JP 2002297059A JP 2002297059 A JP2002297059 A JP 2002297059A JP 2004130649 A JP2004130649 A JP 2004130649A
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Japan
Prior art keywords
light
layered body
decoration
colors
translucent
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JP2002297059A
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Japanese (ja)
Inventor
Hideo Hashimoto
橋本 英雄
Kyoji Koda
国府田 京司
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.)
Cosmo Laser Science Kk
Fine Device Kk
Fine Device Co Ltd
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Cosmo Laser Science Kk
Fine Device Kk
Fine Device Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique which enables freely displaying characters, figures, symbols or the like having a plurality of colors based on within material decorating parts on the surface of light transmitting materials and which can improve design effects and antifalsification effects by leaps and bounds. <P>SOLUTION: By selectively forming decorating parts 18a and 18b within the respective light transmitting materials 12 and 14 through the irradiation of laser beams L, the focal point of each of which is adjusted so as to concentrate the laser beams within each light transmitting material between the light transmitting materials 12 and 14, on the surface of a bicolored laminate 16 formed by laminating the first light transmitting material 1 and the second light transmitting material 14 equipped with colors different from each other, bicolored characters, figures or the like are displayed on the surface of the laminate 16. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は材内加飾技術に係り、特に、レーザビームによってガラスやアクリル樹脂等の透光材の内部に文字や図形等の加飾部を形成する技術に関する。
【0002】
【従来の技術】
【先行特許出願】
【特許文献1】特開2000−62247
【特許文献2】特開2002−21197
上記文献等に開示されている通り、ガラス板やアクリル板等の透光材の表面にレーザビームを照射することにより、内部に文字や図形を描く方法は従来から存在している。
このように透明体の表面ではなく内部にマーキングを施すことにより、以下の如きメリットが生じる。
(1) 表示内容の劣化防止
透明体の表面に直接凹凸を刻設するマーキング方法と異なり、内部に加飾部が形成されるものであるため、摩擦等による劣化が生じ難い。
(2) 意匠的効果の向上
透光材の内部に立体的な形状を表現できるため、表面にマーキングを施す場合に比べて意外性を演出することができる。
(3) 偽造防止
透明体の表面に文字等を表示する場合には、当該文字等を剥がして他の文字等を再印字することが比較的容易であるのに対し、内部に文字等が形成されているため偽造が不可能となる。
また、透光材の内部に画像を形成する方が表面に刻設する場合に比べて高い技術を要するため、コピー商品の製造が困難となる。
【0003】
【発明が解決しようとする課題】
しかしながら、従来のレーザ照射による材内加飾方法の場合、外部から視認できる画像(文字や図形等)の色彩が透光材と同系色に限定されるため、意匠的効果及び偽造防止効果において限界があった。
この発明は、このような従来の材内加飾技術が抱えていた限界を克服するために案出されたものであり、透光材の表面に複数色の材内加飾部を表現することを可能とする技術の提供を目的としている。
【0004】
【課題を解決するための手段】
上記の目的を達成するため、この発明に係る第1の材内加飾方法は、異なる色彩を備えた複数の透光材を積層させた層状体の表面に、各透光材の内部に集光するよう焦点が調整されたレーザビームを所定のパターンで照射し、各透光材の内部に加飾部を選択的に形成することにより、層状体の表面に複数色の加飾部を表示させることを特徴としている。
例えば、薄緑色系の色彩を備えた透光材と薄橙色系の色彩を備えた透光材を積層させた2色層状体の場合、その表面の地色としては両者の混色が現れることとなる。
これに対し、材内加飾部は各透光材の色彩がより強調された形で表現されるのが一般的であるため、層状体の表面には橙色あるいは緑色の加飾部がくっきりと表示されることとなる。
この材内加飾部の形状、寸法、位置を適宜調節することにより、層状体の表面に複数の色彩を帯びた文字や図形、記号等を表示させることが可能となる。
【0005】
また、この発明に係る第2の材内加飾方法は、異なる色彩を発する集光性蛍光染料を添加させた複数の透光材を積層させた層状体の表面に、各透光材の内部に集光するよう焦点が調整されたレーザビームを所定のパターンで照射し、各透光材の内部に加飾部を選択的に形成することにより、層状体の表面に複数色の加飾部を表示させることを特徴としている。
ここで「集光性蛍光染料」とは、アクリル等の透光性樹脂材に添加させることにより、プレートの表面で受けた太陽光等を集光し、蛍光に変換して端面から放射させる特性を備えた物質を意味し、例えばBASF社のLUMOGEN F(登録商標)等が該当する。この集光性蛍光染料は、現時点で4タイプ(紫色発光用、黄色発光用、オレンジ色発光用、赤色発光用)が存在している。
この集光性蛍光染料をアクリル等の透明樹脂材に極微量添加すると、肉眼ではほとんど無色透明に見えるが、レーザビームの照射によって内部に微細なクラックが生じると、その個所に集光してそれぞれの蛍光色が放射されることとなる。したがって、上記のように異なるタイプの集光性蛍光染料を添加させた複数の透光材を積層させた層状体の場合も、その表面はほとんど無色透明に近いにもかかわらず、各透光材に選択的にレーザビームを照射して材内加飾部を形成すると、その部分に関しては各集光性蛍光染料特有の色彩が表面に表示されることとなる。
【0006】
さらに、この発明に係る第3の材内加飾方法は、異なる色彩を発する複数種類の集光性蛍光染料を部分的に添加させた多領域化透光材の表面に、内部に集光するよう焦点が調整されたレーザビームを所定のパターンで照射し、各集光性蛍光染料の添加領域内部に加飾部を選択的に形成することにより、その表面に複数色の加飾部を表示させることを特徴としている。
上記した第2の材内加飾方法の場合には、異なったタイプの集光性蛍光染料を添加させた透光材を縦方向に積層配置させ、各層毎に材内加飾部を選択的に形成することで層状体の表面に複数の色彩を表示させることを企図している。
これに対し、この第3の材内加飾方法の場合には、一層からなる透光材の中に異なったタイプの集光性蛍光染料を横方向に分布させ、各領域毎に材内加飾部を選択的に形成することで透光材の表面に複数の色彩を表示させる点に特徴がある。
【0007】
この発明に係る材内加飾部を備えた第1の層状体は、異なる色彩を備えた複数の透光材を積層させたものであり、各透光材はそれぞれレーザビームの照射によって形成された加飾部を内部に備えており、この結果、層状体の表面に複数色の加飾部が現れていることを特徴としている。
【0008】
また、この発明に係る材内加飾部を備えた第2の層状体は、異なる色彩を発する集光性蛍光染料を添加させた複数の透光材を積層させたものであり、各透光材はそれぞれレーザビームの照射によって形成された加飾部を内部に備えており、この結果、層状体の表面に複数色の加飾部が現れていることを特徴としている。
【0009】
さらに、この発明に係る材内加飾部を備えた多領域化透光材は、異なる色彩を発する複数種類の集光性蛍光染料を部分的に添加させたものであり、各集光性蛍光染料の添加領域はレーザビームの照射によって形成された加飾部を内部に備えており、この結果、表面に複数色の加飾部が現れていることを特徴としている。
【0010】
【発明の実施の形態】
図1は、この発明に係る第1の材内加飾方法を示す断面図であり、加工ステージ10の表面に第1の透光材12と第2の透光材14とを接合させた層状体16が載置されている。この第1の透光材12と第2の透光材14は、それぞれ異なった色彩を帯びている。
また、この2色層状体16の表面には、図示しないYVOレーザ発振器あるいはYAGレーザ発振器から出力されたレーザビームLが所定のパターンで照射される。この際、各レーザビームLが第1の透光材12の内部あるいは第2の透光材14の内部において集光されるように、それぞれの焦点位置が設定されている。
例えば、レーザビームLaは第2の透光材14の内部に焦点が合わせられているため、第2の透光材14内において微細なクラックが生じ、加飾部18bが形成される。
また、レーザビームLbは第1の透光材12の内部に焦点が合わせられているため、第2の透光材12内において微細なクラックが生じ、加飾部18aが形成される。
【0011】
X−Yステージやガルバノミラー等の作用により、上記層状体16の表面に対するレーザビームLの照射位置や照射パターンを適宜調節することにより、図2に示すように、層状体16の表面に2色の文字を表示させることが可能となる。
例えば、第1の透光材12を薄緑色系の色彩を帯びたアクリル樹脂板によって構成すると共に、第2の透光材14を薄橙色系の色彩を帯びたアクリル樹脂板によって構成した場合、両色彩の混色が層状体16の地色(加飾部18a,18b)以外の色彩)として視認される。
これに対し、第1の透光材12の内部に加飾部18aをアルファベットの「A」字形状に形成すると、層状体16の表面には第1の透光材12の緑色を強調させた色彩の「A」が現れる。
また、第2の透光材14の内部に加飾部18bをアルファベットの「B」字形状に形成すると、層状体16の表面には第2の透光材14の橙色を強調させた色彩の「B」が現れる。
【0012】
図2においては、2色の文字が交互に層状体16の表面に表示された状態が描かれているが、レーザビームLの照射パターンを変えることにより、文字以外の図形を2色で描画することもできる。
また、1つの文字や図形を2色で表現することも可能である。
【0013】
この材内加飾方法の応用例を、図3に示す。
この場合、高級腕時計20の文字盤22を覆う透明カバー24を、それぞれ異なった色彩を備えた第1の透光材12及び第2の透光材14の2色層状体16によって構成しておき、各透光材12,14内に加飾部18a,18bを選択的に形成することによって、透明カバー24の表面に2色の文字を表示させた状態が描かれている。
このように、腕時計のブランド名に相当する文字「SWECH」を交互に2色表示させることにより、当該腕時計20のデザイン効果やブランドイメージを高めることが可能となる。
また、2層構造の透明カバー24を用意し、各透光材12,14の内部に選択的に加飾部18a,18bを形成するには相当な技術と設備、コストを要するため、容易に偽造することが困難となる利点がある。
もちろん、文字は各透光材12,14の内部に形成されているため、表面摩擦等によって表示内容が劣化しないという利点も備えている。
【0014】
腕時計20以外でも、例えば高級化粧品や健康食品の容器などに応用可能である。
また、文字以外の2次元的な図形やモノグラム、3次元的な立体画像を各透光材12,14内に形成し、層状体の表面に2色表示することもできる。
【0015】
上記にあっては、異なった色彩を帯びた第1の透光材12及び第2の透光材14を積層させることにより、2色層状体16の表面に2色の画像を表示させる例を示したが、この発明はこれに限定されるものではない。
例えば、図4に示すように、それぞれ異なった色彩を帯びた第1の透光材12、第2の透光材14、及び第3の透光材26を積層させることによって3色層状体28を構成し、レーザビームLを所定パターンで照射して各透光材12,14,26の内部に加飾部18a,18b,18cを選択的に形成することもできる。
この結果、図示は省略したが、3色層状体28の表面に地色と区別できる3色の文字や図形等を表現することが可能となる。
もちろん、それぞれ異なった色彩を帯びた4以上の透光材を積層させて多色層状体を構成し、各透光材の内部に加飾部を選択的に形成することにより、層状体の表面に4色以上の文字や図形等を表現することもできる。
【0016】
上記の層状体は、異なった色彩を帯びた複数の透光材を接合させることによって形成されることを前提としたが、この発明はこれに限定されるものではない。すなわち、樹脂材の多色同時成型技術により、異なった色彩を備えた複数の透光材の積層構造が直接形成される層状体に対しても、この発明に係る材内加飾方法は適用可能である。
【0017】
図5は、この発明に係る第2の材内加飾方法を示す断面図であり、加工ステージ10の表面に、第1の集光性蛍光染料添加透光材(以下「第1の添加透光材30」)、第2の集光性蛍光染料添加透光材(以下「第2の添加透光材32」)、第3の集光性蛍光染料添加透光材(以下「第3の添加透光材34」)、第4の集光性蛍光染料添加透光材(以下「第4の添加透光材36」)を接合させた層状体38が載置されている。
この第1の添加透光材30には紫色発光用の集光性蛍光染料が、第2の添加透光材32には黄色発光用の集光性蛍光染料が、第3の添加透光材34にはオレンジ色発光用の集光性蛍光染料が、第4の添加透光材36には赤色発光用の集光性蛍光染料がそれぞれ添加されているが、各集光性蛍光染料の添加率は0.001重量%以下であるため、層状体38の表面は肉眼ではほとんど無色透明に見える。
【0018】
この層状体38の表面には、図示しないYVOレーザ発振器あるいはYAGレーザ発振器から出力されたレーザビームLが所定のパターンで照射される。
この際、各レーザビームLが第1の添加透光材30〜第4の添加透光材36の内部において集光されるように、それぞれの焦点位置が設定されている。
すなわち、レーザビームLcは第1の添加透光材30の内部に焦点が合わせられているため、第1の添加透光材30内において微細なクラックが生じ、紫の蛍光色を発する加飾部40vが形成される。
また、レーザビームLdは第2の添加透光材32の内部に焦点が合わせられているため、第2の添加透光材32内において微細なクラックが生じ、黄の蛍光色を発する加飾部40yが形成される。
同様に、レーザビームLeの照射によって第3の添加透光材34内にオレンジの蛍光色を発する加飾部40oが形成され、レーザビームLfの照射によって第4の添加透光材36内に赤の蛍光色を発する加飾部40rが形成される。
【0019】
上記と同様、X−Yステージやガルバノミラー等の作用により、層状体38の表面に対するレーザビームLの照射位置や照射パターンを適宜調節することにより、層状体38の表面に4色の文字や図形、記号を表示させることが可能となる(図示省略)。
しかも、層状体38の地色は限りなく無色透明に近いため、固有の蛍光色に染まった加飾部40v〜40rと地色とのコントラストがより鮮明に表示されることとなる。
上記の層状体38は、各添加透光材30〜36を接合させることによって形成されることを前提としたが、樹脂材の多層同時成型技術により、異なった集光性蛍光染料を添加させた複数の透光材の積層構造が直接形成される層状体に対しても適用可能である。
【0020】
図6は、この発明に係る第3の材内加飾方法を示す断面図であり、加工ステージ10の表面に、第1の集光性蛍光染料添加領域(以下「第1の添加領域42」)、第2の集光性蛍光染料添加領域(以下「第2の添加領域44」)、第3の集光性蛍光染料添加領域(以下「第3の添加領域46」)、第4の集光性蛍光染料添加領域(以下「第4の添加領域48」)を備えた多領域化透光材50が載置されている。
この第1の添加領域42には紫色発光用の集光性蛍光染料が、第2の添加領域44には黄色発光用の集光性蛍光染料が、第3の添加領域46にはオレンジ色発光用の集光性蛍光染料が、第4の添加領域48には赤色発光用の集光性蛍光染料がそれぞれ添加されているが、上記と同様、各集光性蛍光染料の添加率は0.001重量%以下であるため、多領域化透光材50の表面は肉眼ではほとんど無色透明に見える。
【0021】
この多領域化透光材50の表面には、図示しないYVOレーザ発振器あるいはYAGレーザ発振器から出力されたレーザビームLが所定のパターンで照射される。
この際、各レーザビームLが第1の添加領域42〜第4の添加領域48の内部において集光されるように、それぞれの焦点位置が設定されている。
すなわち、レーザビームLgは第1の添加領域42の内部に焦点が合わせられているため、第1の添加領域内42において微細なクラックが生じ、紫の蛍光色を発する加飾部40vが形成される。
また、レーザビームLhは第2の添加領域44の内部に焦点が合わせられているため、第2の添加領域44内において微細なクラックが生じ、黄の蛍光色を発する加飾部40yが形成される。
同様に、レーザビームLiの照射によって第3の添加領域46の内部にオレンジの蛍光色を発する加飾部40oが形成され、レーザビームLjの照射によって第4の添加領域48の内部に赤の蛍光色を発する加飾部40rが形成される。
【0022】
上記と同様、X−Yステージやガルバノミラー等の作用により、多領域化透光材50の表面に対するレーザビームLの照射位置や照射パターンを適宜調節することにより、多領域化透光材50の表面に4色の文字や図形、記号を表示させることが可能となる。
しかも、多領域化透光材50の地色は限りなく無色透明に近いため、各蛍光色に染まった加飾部40v〜40rと地色とのコントラストが鮮明に表示されることとなる。
【0023】
【発明の効果】
この発明に係る材内加飾方法を利用すれば、複数の色彩を帯びた材内加飾部によって層状体や多領域化透光材の表面に文字や図形、記号等を多色表示させることが可能となり、その意匠的効果及び偽造防止効果を飛躍的に向上させることができる。
【0024】
また、この発明に係る材内加飾部備えた層状体や多領域化透光材にあっては、複数の色彩を帯びた材内加飾部によって表面に文字や図形、記号等が多色表示されているため、高い意匠的効果及び偽造防止効果を発揮することができる。
【図面の簡単な説明】
【図1】この発明に係る第1の材内加飾方法を2色層状体に対して適用している様子を示す概念図である。
【図2】層状体の表面に2色の文字が表示された状態を示す平面図である。
【図3】この発明に係る第1の材内加飾方法を腕時計のガラスカバーに施した例を示す平面図である。
【図4】この発明に係る第1の材内加飾方法を3色層状体に対して適用している様子を示す概念図である。
【図5】この発明に係る第2の材内加飾方法を示す概念図である。
【図6】この発明に係る第3の材内加飾方法を示す概念図である。
【符号の説明】
12 第1の透光材
14 第2の透光材
16 2色層状体
18a〜18c 加飾部
20 腕時計
22 文字盤
24 透明カバー
26 第3の透光材
28 3色層状体
30 第1の添加透光材
32 第2の添加透光材
34 第3の添加透光材
36 第4の添加透光材
38 層状体
40v 紫の蛍光色を発する加飾部
40y 黄の蛍光色を発する加飾部
40o オレンジの蛍光色を発する加飾部
40r 赤の蛍光色を発する加飾部
42 第1の添加領域
44 第2の添加領域
46 第3の添加領域
48 第4の添加領域
50 多領域化透光材
L レーザビーム
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-material decoration technique, and more particularly, to a technique for forming a decoration part such as a character or a figure inside a translucent material such as glass or acrylic resin by a laser beam.
[0002]
[Prior art]
[Prior Patent Application]
[Patent Document 1] JP-A-2000-62247
[Patent Document 2] JP-A-2002-21197
As disclosed in the above documents and the like, there is a conventional method of drawing characters and figures inside by irradiating the surface of a light-transmitting material such as a glass plate or an acrylic plate with a laser beam.
By marking the inside of the transparent body instead of the surface as described above, the following merits are produced.
(1) Prevention of deterioration of display content Unlike a marking method in which irregularities are directly engraved on the surface of a transparent body, a decorative portion is formed inside, and therefore deterioration due to friction or the like hardly occurs.
(2) Improvement of design effect Since a three-dimensional shape can be expressed inside the translucent material, unexpectedness can be produced compared to the case where marking is applied to the surface.
(3) When displaying characters on the surface of a forgery-preventing transparent body, it is relatively easy to peel off the characters and reprint other characters, while characters are formed inside Forgery is impossible.
In addition, it is difficult to manufacture a copy product because an image is formed inside the translucent material, which requires a higher technique than the case where the image is engraved on the surface.
[0003]
[Problems to be solved by the invention]
However, in the case of conventional decoration methods using laser irradiation, the color of images (characters, figures, etc.) that can be visually recognized from the outside is limited to colors similar to the translucent material. was there.
The present invention has been devised to overcome the limitations of such conventional in-material decoration technology, and expresses in-material decoration parts of multiple colors on the surface of a translucent material. The purpose is to provide technology that enables
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the first in-material decorating method according to the present invention is arranged on the surface of a layered body in which a plurality of translucent materials having different colors are laminated, inside each translucent material. By irradiating a laser beam whose focal point has been adjusted to illuminate in a predetermined pattern and selectively forming a decorative part inside each translucent material, a multi-colored decorative part is displayed on the surface of the layered body It is characterized by letting.
For example, in the case of a two-color layered body in which a translucent material having a light green color and a translucent material having a light orange color are laminated, a mixed color of both appears as the ground color of the surface. Become.
On the other hand, since the decoration part in the material is generally expressed in a form in which the color of each translucent material is more emphasized, the orange or green decoration part is clearly displayed on the surface of the layered body. Will be displayed.
By appropriately adjusting the shape, size, and position of the in-material decoration portion, it is possible to display a plurality of colored characters, figures, symbols, and the like on the surface of the layered body.
[0005]
Further, in the second decorating method according to the present invention, the interior of each translucent material is formed on the surface of a layered body obtained by laminating a plurality of translucent materials added with a condensing fluorescent dye that emits different colors. By irradiating a laser beam whose focal point is adjusted so as to be condensed into a predetermined pattern and selectively forming a decoration part inside each light-transmitting material, a decoration part of a plurality of colors on the surface of the layered body Is displayed.
Here, the “light-collecting fluorescent dye” is a property that condenses sunlight received on the surface of the plate by adding it to a translucent resin material such as acrylic, converts it into fluorescence, and emits it from the end face. For example, LUMOGEN F (registered trademark) manufactured by BASF is applicable. There are currently four types of light-collecting fluorescent dyes (for purple light emission, yellow light emission, orange light emission, and red light emission).
When a very small amount of this condensing fluorescent dye is added to a transparent resin material such as acrylic, it looks almost colorless and transparent to the naked eye. Will be emitted. Therefore, even in the case of a layered body in which a plurality of translucent materials added with different types of condensing fluorescent dyes as described above are laminated, each translucent material is almost colorless and transparent. When the interior decoration portion is formed by selectively irradiating the laser beam, the color specific to each condensing fluorescent dye is displayed on the surface.
[0006]
Furthermore, the third in-material decoration method according to the present invention condenses inside the surface of the multi-region translucent material to which a plurality of types of condensing fluorescent dyes that emit different colors are partially added. By irradiating a laser beam with the focal point adjusted in a predetermined pattern and selectively forming a decorative part inside the region where each condensing fluorescent dye is added, a multi-colored decorative part is displayed on the surface. It is characterized by letting.
In the case of the above-mentioned second decorating method in the material, a translucent material to which different types of condensing fluorescent dyes are added is laminated in the vertical direction, and the decorating portion in the material is selectively selected for each layer. It is intended to display a plurality of colors on the surface of the layered body.
On the other hand, in the case of this third in-material decoration method, different types of condensing fluorescent dyes are distributed in the lateral direction in the light-transmitting material composed of one layer, and the in-material addition is performed for each region. It is characterized in that a plurality of colors are displayed on the surface of the translucent material by selectively forming the decorative portion.
[0007]
The first layered body provided with the in-material decoration portion according to the present invention is formed by laminating a plurality of translucent materials having different colors, and each translucent material is formed by irradiation with a laser beam. As a result, a plurality of colored decorative portions appear on the surface of the layered body.
[0008]
Further, the second layered body provided with the in-material decoration portion according to the present invention is formed by laminating a plurality of translucent materials added with a condensing fluorescent dye that emits different colors. Each of the materials has a decoration portion formed by laser beam irradiation inside, and as a result, a plurality of color decoration portions appear on the surface of the layered body.
[0009]
Furthermore, the multi-region translucent material provided with the in-material decoration portion according to the present invention is obtained by partially adding a plurality of kinds of condensing fluorescent dyes that emit different colors, and each condensing fluorescent material. The dye-added region has a decoration portion formed by laser beam irradiation inside, and as a result, a plurality of color decoration portions appear on the surface.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a cross-sectional view showing a first in-material decoration method according to the present invention, in which a first translucent material 12 and a second translucent material 14 are joined to the surface of a processing stage 10. A body 16 is placed. The first light transmissive material 12 and the second light transmissive material 14 have different colors.
Further, the surface of the two-color layered body 16 is irradiated with a laser beam L output from a YVO 4 laser oscillator (not shown) or a YAG laser oscillator in a predetermined pattern. At this time, each focal position is set so that each laser beam L is condensed inside the first light transmissive material 12 or the second light transmissive material 14.
For example, since the laser beam La is focused on the inside of the second light transmissive material 14, fine cracks are generated in the second light transmissive material 14, and the decorative portion 18b is formed.
Further, since the laser beam Lb is focused inside the first light transmissive material 12, fine cracks are generated in the second light transmissive material 12, and a decorative portion 18a is formed.
[0011]
By appropriately adjusting the irradiation position and irradiation pattern of the laser beam L on the surface of the layered body 16 by the action of an XY stage, a galvanometer mirror, etc., two colors are applied to the surface of the layered body 16 as shown in FIG. Can be displayed.
For example, when the first translucent material 12 is configured by an acrylic resin plate having a light green color, and the second translucent material 14 is configured by an acrylic resin plate having a light orange color, The mixed color of both colors is visually recognized as the ground color of the layered body 16 (colors other than the decorative portions 18a and 18b).
On the other hand, when the decorative portion 18a is formed in an alphabet “A” shape inside the first light-transmitting material 12, the green color of the first light-transmitting material 12 is emphasized on the surface of the layered body 16. The color “A” appears.
Further, when the decorative portion 18 b is formed in the alphabet “B” shape inside the second light-transmitting material 14, the surface of the layered body 16 has a color that emphasizes the orange color of the second light-transmitting material 14. “B” appears.
[0012]
In FIG. 2, a state in which characters of two colors are alternately displayed on the surface of the layered body 16 is drawn, but by changing the irradiation pattern of the laser beam L, a graphic other than characters is drawn in two colors. You can also.
It is also possible to express one character or figure with two colors.
[0013]
An application example of this in-material decoration method is shown in FIG.
In this case, the transparent cover 24 covering the dial 22 of the luxury wristwatch 20 is constituted by the two-color layered body 16 of the first light-transmitting material 12 and the second light-transmitting material 14 each having a different color. A state in which two-color characters are displayed on the surface of the transparent cover 24 by selectively forming the decoration portions 18a and 18b in the respective light-transmitting materials 12 and 14 is depicted.
In this way, by alternately displaying the characters “SWECH” corresponding to the wristwatch brand name in two colors, the design effect and brand image of the wristwatch 20 can be enhanced.
In addition, since a transparent cover 24 having a two-layer structure is prepared and the decoration portions 18a and 18b are selectively formed inside the light-transmitting materials 12 and 14, considerable technology, equipment, and cost are required. There is an advantage that it is difficult to forge.
Of course, since the characters are formed inside each of the translucent materials 12 and 14, the display content is not deteriorated due to surface friction or the like.
[0014]
Other than the wristwatch 20, for example, it can be applied to high-grade cosmetics and health food containers.
Further, a two-dimensional figure other than characters, a monogram, or a three-dimensional stereoscopic image can be formed in each of the light-transmitting materials 12 and 14 and displayed in two colors on the surface of the layered body.
[0015]
In the above, an example in which a two-color image is displayed on the surface of the two-color layered body 16 by laminating the first light-transmissive material 12 and the second light-transmissive material 14 having different colors. Although shown, the present invention is not limited to this.
For example, as shown in FIG. 4, a three-color layered body 28 is formed by laminating a first translucent material 12, a second translucent material 14, and a third translucent material 26 having different colors. The decorative portions 18a, 18b, and 18c can be selectively formed inside the light-transmitting materials 12, 14, and 26 by irradiating the laser beam L in a predetermined pattern.
As a result, although not shown, it is possible to express three-color characters and figures that can be distinguished from the ground color on the surface of the three-color layered body 28.
Of course, the surface of the layered body is formed by laminating four or more translucent materials each having a different color to form a multicolor layered body and selectively forming a decorative portion inside each translucent material. It is also possible to express characters and figures of four colors or more.
[0016]
The layered body is assumed to be formed by joining a plurality of translucent materials having different colors, but the present invention is not limited to this. That is, the in-material decoration method according to the present invention can be applied to a layered body in which a laminated structure of a plurality of translucent materials having different colors is directly formed by a multicolor simultaneous molding technique of resin materials. It is.
[0017]
FIG. 5 is a cross-sectional view showing a second in-material decorating method according to the present invention. On the surface of the processing stage 10, a first light-collecting fluorescent dye-added translucent material (hereinafter referred to as “first added translucent material”) is shown. A light condensing fluorescent dye-added translucent material (hereinafter “second additive translucent material 32”), a third condensing fluorescent dye-added translucent material (hereinafter “third” The layered body 38 to which the additive translucent material 34 ") and the fourth light-collecting fluorescent dye-added translucent material (hereinafter" fourth additive translucent material 36 ") are joined is placed.
The first additive translucent material 30 has a purple fluorescent light-collecting fluorescent dye, the second additive translucent material 32 has a yellow light-emitting fluorescent dye, and the third additive translucent material. The light-collecting fluorescent dye for emitting orange light is added to 34, and the light-collecting fluorescent dye for emitting red light is added to the fourth additive translucent material 36. Since the rate is 0.001% by weight or less, the surface of the layered body 38 appears almost colorless and transparent to the naked eye.
[0018]
The surface of the layered body 38 is irradiated with a laser beam L output from a YVO 4 laser oscillator or YAG laser oscillator (not shown) in a predetermined pattern.
At this time, the respective focal positions are set so that each laser beam L is condensed inside the first additive translucent material 30 to the fourth additive translucent material 36.
That is, since the laser beam Lc is focused on the inside of the first additive translucent material 30, a decorative portion that generates a fine fluorescent color and generates a purple fluorescent color in the first additive translucent material 30. 40v is formed.
Further, since the laser beam Ld is focused on the inside of the second additive translucent material 32, a decorative portion that generates a fine fluorescent light and generates a yellow fluorescent color in the second additive translucent material 32. 40y is formed.
Similarly, a decorative portion 40o that emits an orange fluorescent color is formed in the third additive translucent material 34 by irradiation with the laser beam Le, and red in the fourth additive translucent material 36 by irradiation with the laser beam Lf. The decoration part 40r which emits the fluorescent color of is formed.
[0019]
Similarly to the above, by appropriately adjusting the irradiation position and irradiation pattern of the laser beam L on the surface of the layered body 38 by the action of an XY stage, a galvanometer mirror, etc., four-color characters and figures are formed on the surface of the layered body 38. , Symbols can be displayed (not shown).
In addition, since the ground color of the layered body 38 is almost colorless and transparent, the contrast between the decorative portions 40v to 40r dyed with the unique fluorescent color and the ground color is displayed more clearly.
The above layered body 38 is premised on being formed by bonding the respective additive translucent materials 30 to 36, but different condensing fluorescent dyes were added by a multilayer simultaneous molding technique of resin materials. The present invention can also be applied to a layered body in which a laminated structure of a plurality of translucent materials is directly formed.
[0020]
FIG. 6 is a cross-sectional view illustrating a third in-material decorating method according to the present invention. On the surface of the processing stage 10, a first light-collecting fluorescent dye-added region (hereinafter referred to as “first-added region 42”). ), A second condensing fluorescent dye addition region (hereinafter “second addition region 44”), a third condensing fluorescent dye addition region (hereinafter “third addition region 46”), a fourth collection A multi-region translucent material 50 having a light fluorescent dye addition region (hereinafter, “fourth addition region 48”) is placed.
The first additive region 42 has a purple fluorescent light-collecting fluorescent dye, the second additive region 44 has a yellow fluorescent light-collecting fluorescent dye, and the third additive region 46 has an orange light-emitting property. Concentrating fluorescent dyes for red light emission are added to the fourth addition region 48, and the addition ratio of each condensing fluorescent dye is 0. Since the amount is 001% by weight or less, the surface of the multi-region translucent material 50 appears almost colorless and transparent to the naked eye.
[0021]
The surface of the multi-region translucent material 50 is irradiated with a laser beam L output from a YVO 4 laser oscillator (not shown) or a YAG laser oscillator in a predetermined pattern.
At this time, the respective focal positions are set so that each laser beam L is condensed inside the first addition region 42 to the fourth addition region 48.
That is, since the laser beam Lg is focused inside the first additive region 42, a fine crack is generated in the first additive region 42, and a decorative portion 40v that emits a purple fluorescent color is formed. The
Further, since the laser beam Lh is focused inside the second additive region 44, a fine crack is generated in the second additive region 44, and a decorative portion 40y that emits yellow fluorescent color is formed. The
Similarly, a decoration portion 40o that emits an orange fluorescent color is formed inside the third addition region 46 by irradiation with the laser beam Li, and red fluorescence is formed inside the fourth addition region 48 by irradiation with the laser beam Lj. A decorative portion 40r that emits a color is formed.
[0022]
Similarly to the above, by appropriately adjusting the irradiation position and irradiation pattern of the laser beam L on the surface of the multi-region translucent material 50 by the action of an XY stage, a galvanometer mirror, etc., the multi-region translucent material 50 It is possible to display characters, figures and symbols of four colors on the surface.
Moreover, since the ground color of the multi-region translucent material 50 is almost as colorless and transparent, the contrast between the decorative portions 40v to 40r dyed in each fluorescent color and the ground color is clearly displayed.
[0023]
【The invention's effect】
If the in-material decoration method according to the present invention is used, characters, figures, symbols, etc. are displayed in multiple colors on the surface of a layered body or multi-region translucent material by a plurality of colored interior decoration parts. The design effect and the anti-counterfeiting effect can be drastically improved.
[0024]
Further, in the layered body and the multi-region translucent material provided with the in-material decoration portion according to the present invention, the characters, figures, symbols, and the like are multicolored on the surface by the in-material decoration portion having a plurality of colors. Since it is displayed, a high design effect and a forgery prevention effect can be exhibited.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing a state in which a first in-material decoration method according to the present invention is applied to a two-color layered body.
FIG. 2 is a plan view showing a state in which characters of two colors are displayed on the surface of the layered body.
FIG. 3 is a plan view showing an example in which the first in-material decoration method according to the present invention is applied to a glass cover of a wristwatch.
FIG. 4 is a conceptual diagram showing a state in which the first in-material decoration method according to the present invention is applied to a three-color layered body.
FIG. 5 is a conceptual diagram showing a second in-material decoration method according to the present invention.
FIG. 6 is a conceptual diagram showing a third in-material decoration method according to the present invention.
[Explanation of symbols]
12 First translucent material 14 Second translucent material 16 Two-color layered body 18a to 18c Decorating part 20 Wristwatch 22 Dial 24 Transparent cover 26 Third translucent material 28 Three-color layered body 30 First addition Light-transmitting material 32 Second additive light-transmitting material 34 Third additive light-transmitting material 36 Fourth additive light-transmitting material 38 Layered body 40v Decorating portion 40y emitting purple fluorescent color Decorating portion emitting yellow fluorescent color 40o Decorative part emitting orange fluorescent color 40r Decorative part emitting red fluorescent color 42 First additive region 44 Second additive region 46 Third additive region 48 Fourth additive region 50 Multi-region translucent light Material L Laser beam

Claims (6)

異なる色彩を備えた複数の透光材を積層させた層状体の表面に、各透光材の内部に集光するよう焦点が調整されたレーザビームを所定のパターンで照射し、各透光材の内部に加飾部を選択的に形成することにより、層状体の表面に複数色の加飾部を表示させることを特徴とする材内加飾方法。A surface of a layered body in which a plurality of light-transmitting materials having different colors are laminated is irradiated with a laser beam having a focus adjusted so as to be focused inside each light-transmitting material in a predetermined pattern, and each light-transmitting material The decorative part in a material characterized by displaying a decoration part of multiple colors on the surface of a layered body by selectively forming a decoration part inside. 異なる色彩を発する集光性蛍光染料を添加させた複数の透光材を積層させた層状体の表面に、各透光材の内部に集光するよう焦点が調整されたレーザビームを所定のパターンで照射し、各透光材の内部に加飾部を選択的に形成することにより、層状体の表面に複数色の加飾部を表示させることを特徴とする材内加飾方法。A laser beam whose focal point has been adjusted to focus on the inside of each translucent material on a surface of a layered body in which a plurality of translucent materials added with condensing fluorescent dyes that emit different colors are laminated in a predetermined pattern The decoration method in a material characterized by displaying the decoration part of multiple colors on the surface of a layered body by irradiating with and selectively forming a decoration part in each translucent material. 異なる色彩を発する複数種類の集光性蛍光染料を部分的に添加させた多領域化透光材の表面に、内部に集光するよう焦点が調整されたレーザビームを所定のパターンで照射し、各集光性蛍光染料の添加領域内部に加飾部を選択的に形成することにより、その表面に複数色の加飾部を表示させることを特徴とする材内加飾方法。Irradiate the surface of a multi-region translucent material partially added with a plurality of types of condensing fluorescent dyes that emit different colors with a predetermined pattern so as to focus the light inside. A decorating method for a material, wherein a decorative portion is selectively formed inside a region where each fluorescent fluorescent dye is added to display a decorative portion of a plurality of colors on the surface thereof. 異なる色彩を備えた複数の透光材を積層させた層状体であって、各透光材はそれぞれレーザビームの照射によって形成された加飾部を内部に備え、複数色の加飾部が表面に表示されていることを特徴とする材内加飾部を備えた層状体。A layered body in which a plurality of light-transmitting materials having different colors are laminated, each light-transmitting material having a decoration portion formed by laser beam irradiation inside, and a plurality of color decoration portions on the surface A layered body provided with an in-material decoration portion, characterized in that 異なる色彩を発する集光性蛍光染料を添加させた複数の透光材を積層させた層状体であって、各透光材はそれぞれレーザビームの照射によって形成された加飾部を内部に備え、複数色の加飾部が表面に表示されていることを特徴とする材内加飾部を備えた層状体。It is a layered body in which a plurality of translucent materials added with a condensing fluorescent dye that emits different colors is laminated, each translucent material is provided with a decorative portion formed by irradiation of a laser beam, A layered body provided with an in-material decoration portion, wherein a decoration portion of a plurality of colors is displayed on the surface. 異なる色彩を発する複数種類の集光性蛍光染料を部分的に添加させた多領域化透光材であって、各集光性蛍光染料の添加領域はレーザビームの照射によって形成された加飾部を内部に備え、複数色の加飾部が表面に表示されていることを特徴とする材内加飾部を備えた多領域化透光材。A multi-region translucent material in which a plurality of types of light-collecting fluorescent dyes that emit different colors are partially added, and each of the light-added fluorescent dye-added regions is a decorative portion formed by laser beam irradiation A multi-region translucent material provided with an in-material decorating portion characterized in that a decorating portion of a plurality of colors is displayed on the surface.
JP2002297059A 2002-10-10 2002-10-10 Material inside decorating method, laminate with material inside decorating part, and multiregionalized light transmitting material Pending JP2004130649A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008538726A (en) * 2005-04-21 2008-11-06 レーザー エナジェティックス,インコーポレイテッド Ultraviolet-visible-infrared multi-wavelength laser marking process
JP2009160605A (en) * 2007-12-28 2009-07-23 Saitama Univ Marking method of light transmissive compound material, and structural member having mark
JP2010280086A (en) * 2009-06-03 2010-12-16 Ishizuka Glass Co Ltd Method of processing glass product having resin coating film

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008538726A (en) * 2005-04-21 2008-11-06 レーザー エナジェティックス,インコーポレイテッド Ultraviolet-visible-infrared multi-wavelength laser marking process
JP4863522B2 (en) * 2005-04-21 2012-01-25 レーザー エナジェティックス,インコーポレイテッド Ultraviolet-visible-infrared multi-wavelength laser marking process
JP2009160605A (en) * 2007-12-28 2009-07-23 Saitama Univ Marking method of light transmissive compound material, and structural member having mark
JP2010280086A (en) * 2009-06-03 2010-12-16 Ishizuka Glass Co Ltd Method of processing glass product having resin coating film

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