JPS62248682A - Laser image forming method using carbonization accelerator - Google Patents
Laser image forming method using carbonization acceleratorInfo
- Publication number
- JPS62248682A JPS62248682A JP61092982A JP9298286A JPS62248682A JP S62248682 A JPS62248682 A JP S62248682A JP 61092982 A JP61092982 A JP 61092982A JP 9298286 A JP9298286 A JP 9298286A JP S62248682 A JPS62248682 A JP S62248682A
- Authority
- JP
- Japan
- Prior art keywords
- carbonization
- laser beam
- laser
- blank material
- accelerator
- 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 26
- 238000003763 carbonization Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000001913 cellulose Substances 0.000 claims abstract description 10
- 229920002678 cellulose Polymers 0.000 claims abstract description 10
- 230000001678 irradiating effect Effects 0.000 claims abstract description 4
- 239000002023 wood Substances 0.000 claims description 4
- 108010076504 Protein Sorting Signals Proteins 0.000 claims description 2
- 238000007648 laser printing Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- -1 NaOH Chemical class 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 abstract description 3
- 238000006297 dehydration reaction Methods 0.000 abstract description 3
- 235000000346 sugar Nutrition 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 229910001510 metal chloride Inorganic materials 0.000 abstract description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 abstract description 2
- 150000004692 metal hydroxides Chemical class 0.000 abstract description 2
- 239000007800 oxidant agent Substances 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 abstract 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 230000001133 acceleration Effects 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 239000012286 potassium permanganate Substances 0.000 abstract 1
- 229910001388 sodium aluminate Inorganic materials 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 5
- 230000001737 promoting effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 150000008163 sugars Chemical class 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical class [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/267—Marking of plastic artifacts, e.g. with laser
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、木材その他炭化可能な成分を含む板状又は円
筒状素材に階調性をもたせたレーザー焼付面を高品位に
形成する方法において、炭化促進剤を用いるものに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for forming a high-quality laser-burned surface with gradation on a plate-like or cylindrical material containing wood or other carbonizable components. It concerns the use of accelerators.
従来の技術
板材又は版木への図柄、文字等の印字、描写を行うため
に、切削用の刃物等を用いる従来の接触Ｉ方式に対し、
最近では、前記接触方式の欠点を改良すべく、主として
レーザー光のエネルギーを利用するものがある。例えば
、ＹＡＧレーザーを用いて、自動車、エレクトロモータ
ー、バルブ等の銘板上やベアリング、電子部品などの最
終工程後の表面上に国名、型式、名称などを印字したり
、あるいは、超硬質金属やプラスチック等に所望の数字
、記号、図柄を印字したりするものである。Conventional technologyIn contrast to the conventional contact I method, which uses a cutting knife, etc. to print and draw designs, characters, etc. on board materials or woodblocks,
Recently, in order to improve the drawbacks of the contact method, there are methods that mainly utilize the energy of laser light. For example, a YAG laser can be used to print country names, models, names, etc. on the nameplates of automobiles, electromotors, valves, etc., on the surfaces of bearings, electronic parts, etc. after the final process, or on ultra-hard metals and plastics. Desired numbers, symbols, and designs are printed on the paper, etc.
発明が解決しようとする問題点 −
しかしながら、これらの方法は印字・作画の品位がドツ
トごとの２値化（レーザーオン／オフ）表現であって、
階調性を欠き、したがって階調に応じた彫りが形成され
るものではない。Problems to be Solved by the Invention - However, with these methods, the quality of printing and drawing is limited to dot-by-dot binary (laser on/off) expression;
It lacks gradation, and therefore carvings corresponding to the gradation cannot be formed.
本発明者等はここに、上記の欠点を解決する構成として
所定フレーム内における画素ごとの階調的電気信号列か
らなる静止ビデオ情報を作成し、セルロースを含む炭化
可能な表面を有する作画素材を用意するとともに、この
素材の炭化を促進させるに十分なエネルギーを有するレ
ーザービームを発生し、前記レーザービームを前記ビデ
オ情報に従って変調するとともに前記所定のフレームに
従って前記素材における前記フレームに対応した表面範
囲上に走査的に照射することにより、この表面範囲に階
調的に炭化された画素配列からなる画像を形成する方法
を提案したものであるが、本発明においては、前記素材
の炭化をさらに促進する工程を付加しようとするもので
ある。The present inventors hereby created still video information consisting of a gradation electric signal sequence for each pixel within a predetermined frame as a configuration to solve the above-mentioned drawbacks, and created a drawing material having a carbonizable surface containing cellulose. and generating a laser beam having sufficient energy to promote carbonization of the material, modulating the laser beam in accordance with the video information and in accordance with the predetermined frame over a surface area of the material corresponding to the frame. The present invention proposes a method of forming an image consisting of a gradationally carbonized pixel array on this surface area by scanningly irradiating the material, but in the present invention, the carbonization of the material is further promoted. This is an attempt to add a process.
問題点を解決するための手段
このため、本発明は上記の階調的レーザー焼付画法にお
いて、セルロース等の炭化促進剤を、前記レーザービー
ムを照射走査するまでに前記素材の表面に塗布及び含浸
させることを特徴とするものである。Means for Solving the Problems Therefore, in the above-mentioned gradation laser printing method, the present invention provides a method in which a carbonization accelerator such as cellulose is coated and impregnated on the surface of the material before the laser beam is irradiated and scanned. It is characterized by allowing
作 用
上にいう炭化促進剤とは、セルロースその他の糖の脱水
を促進することにより、レーザー照射時における熱分解
生成物中の炭化残分を増し、揮発成分のなかでは水を増
してタール分を抑えることにより、結果として炭の収率
を上げ、鮮明で全体的に濃度の高い焼付面を形成せしめ
るものである。The term carbonization accelerator refers to a carbonization accelerator that promotes the dehydration of cellulose and other sugars, thereby increasing the carbonization residue in the thermal decomposition products during laser irradiation, increasing water among volatile components, and reducing tar content. By suppressing this, the yield of charcoal is increased and a sharp and overall high-density burned surface is formed.
実施例
図は本発明の方法を実施するための工程の概略を示すブ
ロック線図である。図において、（１）はビデオカメラ
又は他の適当な光電的走査手段からなる画像取込装置で
あり、所望のフレーム内における撮影シーン又は原画の
画素ごとの階調的電気信号列を発生するものである。（
２）は前記電気信号列を目的素材に作画するフレームに
適した走査信号と同期した階調的電気信号列として信号
処理し、静止画像情報として記憶しておくためのＣＰＵ
及びメモリー、（３）は前記静止画像情報を読み出して
、たとえば、ＧＯ音響光学変調器又はＣｄ−Ｔｅ電気光
学変調器からなるレーザー変調器（４）に印加する変調
電圧を発生するための変調信号発生器、（５）はたとえ
ば、ＣＯ２レーザー又はＹＡＧレーザーからなるレーザ
ー発振器であり、ここから発射されたレーザービームは
変調器（４）を通って変調される。（６）は変調器（４
）から出たレーザービームのビーム断面積を調整するだ
めのレーザー光学系、（７）はレーザー光学系（６）か
ら出たレーザービームを前記ＣＰＵ及びメモリー （２
）からの走査信号に従って走査するレーザー走査系であ
り、レーザービームはすでに変調器（４）において走査
信号と同期して変調されているため、この走査系（７）
から出る走査ビームは、走査線（水平走査線）ごとに原
シーン又は原画上の対応する光電的走査線に従った階調
度（ビーム強度）分布をもつことになる。（８）は前記
走査ビームを木材その他セルロースを含む作画用素材（
９）上に諧調的画素ビームとして集束照射するためのＦ
、１６・ミラー又はＦ・θレンズからなるレーザー焦点
系であシ、素材（９）はレーザービーム走査線と直交す
る方向に連続又は断続的に移動する素材テープ）ｖ （
１０）上に載置されており、素材面上の水平線ごとの垂
直ピッチ間隔はこの素材テーブルα０）の動作により確
立される。The embodiment diagram is a block diagram showing an outline of the steps for carrying out the method of the present invention. In the figure, (1) is an image capture device consisting of a video camera or other suitable photoelectric scanning means, which generates a gradation electric signal train for each pixel of a photographed scene or original image within a desired frame. It is. (
2) is a CPU for processing the electric signal train as a gradation electric signal train synchronized with a scanning signal suitable for a frame to be drawn on the target material and storing it as still image information;
and a memory, (3) a modulation signal for reading out the still image information and generating a modulation voltage to be applied to a laser modulator (4) consisting of, for example, a GO acousto-optic modulator or a Cd-Te electro-optic modulator. The generator (5) is a laser oscillator, for example a CO2 laser or a YAG laser, and the laser beam emitted from it is modulated through a modulator (4). (6) is the modulator (4
) is a laser optical system that adjusts the beam cross-sectional area of the laser beam emitted from the laser optical system (6), and (7) is a laser optical system that adjusts the beam cross-sectional area of the laser beam emitted from the laser optical system (6).
), and since the laser beam has already been modulated in synchronization with the scanning signal in the modulator (4), this scanning system (7)
The scanning beam emanating from the scanning beam will have a gradient (beam intensity) distribution for each scanning line (horizontal scanning line) according to the corresponding photoelectric scanning line on the original scene or original image. (8) The scanning beam is transmitted to wood and other drawing materials containing cellulose (
9) F for focused irradiation as a gradation pixel beam on
, 16, a laser focusing system consisting of a mirror or an F/θ lens, and the material (9) is a material tape that moves continuously or intermittently in a direction perpendicular to the laser beam scanning line) v (
10) is placed on the material table α0), and the vertical pitch interval for each horizontal line on the material surface is established by the operation of this material table α0).
上記の構成において、画素に適用される階調度数は少く
とも３段階、好ましくは４段階である。画像情報の処理
を行うためのＣＰＵ及びメモリー（３）としては適当な
コンピュータを用いることができ、さらにコンピュータ
の作図機能を利用して画像取込装置（１）の機能を代用
させることもできる。In the above configuration, the number of gradations applied to the pixels is at least three levels, preferably four levels. A suitable computer can be used as the CPU and memory (3) for processing the image information, and furthermore, the drawing function of the computer can be used to substitute the functions of the image capturing device (1).
まだ、レーザービームの走査線を順次垂直方向にシフト
させることにより、素材（９）を静止した状態において
フレーム内の全画素についてビーム照射することもでき
る。そして、基本的な素材テーブル方式又は素材静止方
式のいずれにおいてもフレーム内のビーム走査を所望に
応じた回数だけ反復することにより、作画パターンの全
体的な炭化又は焼付濃度レベルを調整することもできる
。However, by sequentially shifting the scanning line of the laser beam in the vertical direction, it is also possible to irradiate all pixels in the frame with the beam while the material (9) is stationary. In either the basic material table method or the material static method, the overall carbonization or printing density level of the drawing pattern can be adjusted by repeating the beam scan within the frame as many times as desired. .
次に本′発明によれば、図の（１１）で示す通り、素材
（９）に対し、これを素材テーブルα０）に載せる前に
炭化促進剤を塗布もしくは浸漬等により含浸するもので
ある。炭化促進剤により素材の炭化が促進される機構は
、′セルロースその他の糖の脱水を促進する効果 に外
ならない。すなわち、熱分解生成物中の炭化残分を増し
、揮発成分のなかでは、水を増して、タール分をおさえ
ることによって、結果として、炭の収率が上るわけであ
る。Next, according to the present invention, as shown in (11) in the figure, the material (9) is impregnated with a carbonization accelerator by coating or dipping before placing it on the material table α0). The mechanism by which carbonization accelerators promote the carbonization of materials is nothing but the effect of promoting the dehydration of cellulose and other sugars. That is, by increasing the carbonized residue in the thermal decomposition product and increasing the water content among the volatile components to suppress the tar content, the yield of charcoal can be increased as a result.
本発明者は種々の物質について、■酸化剤、■還元剤、
■金属水酸化物、■酸類、■多価金属塩化物、■硼酸塩
類、■アルミニウム化合物、■有機酸塩類、及び■その
他、のグループに分け、本発明の炭化促進剤としての適
性を試験し、表工（炭化促進効果が顕著なもの）、表■
（炭化促進効果が若干あるもの）、及び表Ｉ（炭化促進
効果がないもの）のような結果を得た。Regarding various substances, the present inventor has discovered that: (1) oxidizing agents, (2) reducing agents,
The suitability of the present invention as a carbonization accelerator was tested by dividing into the following groups: ■Metal hydroxides, ■Acids, ■Polyvalent metal chlorides, ■Borates, ■Aluminum compounds, ■Organic acid salts, and ■Others. , Surface finish (those with remarkable carbonization promotion effect), Surface ■
The results shown in Table I (slightly carbonization promoting effect) and Table I (no carbonization promoting effect) were obtained.
表 Ｉ
表 Ｕ
表 ■
発明の効果
本発明は以上の通り、２値化表現でなく、階調度に応じ
てグレースケール様に濃淡を生ずるレーザー作画法にお
いて、炭化促進剤をあらかじめ木材等の素材表面に塗布
、浸漬、場合によってはスプレー等により吹き付けるの
みで、画像部の炭化促進による画像品位の向上、及び作
画工程の能率化を図ることができるものである。Table I Table U Table ■ Effects of the Invention As described above, the present invention uses a laser drawing method that produces shading like a gray scale according to the gradation level, rather than binary expression, by applying a carbonization accelerator to the surface of a material such as wood in advance. By simply coating, dipping, or in some cases spraying, it is possible to improve the image quality by promoting carbonization of the image area and to streamline the drawing process.
図は本発明の方法を実施するだめの工程の概略を示すブ
ロック線図である。
（１） ・＝−−−−−−画像取込装置（２） −＝−
−ＣＰ Ｕ及びメモリー（３）・・−一一一変調信号発
生器
（４） −＝−・−変調器
（５） ・・−−・レーザー発振器
（６）−＝−・・・レーザー光学系
（７）−−レーザー走査系The figure is a block diagram schematically showing steps for carrying out the method of the present invention. (1) ・=−−−−−−Image capture device (2) −=−
-CPU and memory (3)...-111 modulation signal generator (4) -=-...-Modulator (5)...Laser oscillator (6)-=-...Laser optical system (7) --Laser scanning system
Claims (7)
号列からなる静止ビデオ情報を作成し、セルロースを含
む炭化可能な表面を有する作画素材を用意するとともに
、この素材の炭化を促進させるに十分なエネルギーを有
するレーザービームを発生し、前記レーザービームを前
記ビデオ情報に従つて変調するとともに前記所定のフレ
ームに従つて前記素材における前記フレームに対応した
表面範囲上に走査的に照射することにより、この表面範
囲に階調的に炭化された画素配列からなる画像を形成す
る方法において、セルロース等の炭化促進剤を、前記レ
ーザービームを照射走査するまでに前記素材の表面に塗
布及び含浸させることを特徴とする炭化促進剤を用いた
レーザー焼付画法。(1) Create still video information consisting of a tonal electric signal sequence for each pixel within a predetermined frame, prepare a drawing material with a carbonizable surface containing cellulose, and prepare a material with a carbonizable surface containing cellulose, and This is accomplished by generating an energized laser beam, modulating the laser beam in accordance with the video information and scanningly irradiating the surface area of the material according to the predetermined frame. A method for forming an image consisting of a pixel array gradationally carbonized on a surface area, characterized by applying and impregnating a carbonization accelerator such as cellulose on the surface of the material before irradiating and scanning with the laser beam. A laser printing method using a carbonization accelerator.
ガスレーザーにより発生することを特徴とする特許請求
の範囲第（１）項記載の方法。(2) The method according to claim (1), wherein the laser beam is generated by a carbon dioxide laser having a wavelength of about 10.6 μm.
Ｇレーザーにより発生することを特徴とする特許請求の
範囲第（１）項記載の方法。(3) The laser beam is YA with a wavelength of approximately 1.06 μm.
The method according to claim 1, characterized in that the light is generated by a G laser.
器により行うことを特徴とする特許請求の範囲第（１）
〜（３）項のいずれか１項に記載の方法。(4) Claim (1) characterized in that the laser beam is modulated by a Ge acousto-optic modulator.
The method according to any one of (3) to (3).
変調器により行うことを特徴とする特許請求の範囲第（
１）〜（３）項のいずれか１項に記載の方法。(5) The modulation of the laser beam is performed by a Cd-Te electro-optic modulator.
The method according to any one of items 1) to (3).
区分されることを特徴とする特許請求の範囲第（１）〜
（５）項のいずれか１項に記載の方法。(6) Each pixel signal of the video information is divided into at least three gradations.
(5) The method described in any one of paragraphs.
許請求の範囲第（１）〜（６）項のいずれか１項に記載
の方法。(7) The method according to any one of claims (1) to (6), wherein the drawing material is made of wood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61092982A JPS62248682A (en) | 1986-04-21 | 1986-04-21 | Laser image forming method using carbonization accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61092982A JPS62248682A (en) | 1986-04-21 | 1986-04-21 | Laser image forming method using carbonization accelerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62248682A true JPS62248682A (en) | 1987-10-29 |
| JPH0416074B2 JPH0416074B2 (en) | 1992-03-19 |
Family
ID=14069587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61092982A Granted JPS62248682A (en) | 1986-04-21 | 1986-04-21 | Laser image forming method using carbonization accelerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62248682A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4973017A (en) * | 1972-11-14 | 1974-07-15 | ||
| JPS52143035A (en) * | 1976-05-24 | 1977-11-29 | Nippon Telegr & Teleph Corp <Ntt> | Heat recording method |
| JPS5494331A (en) * | 1978-01-09 | 1979-07-26 | Nippon Denso Co Ltd | Preparation of light and dark pattern |
| JPS5625494A (en) * | 1979-08-10 | 1981-03-11 | Tokyo Computer Control Kk | Engraving design, etc. by use of heat rays |
-
1986
- 1986-04-21 JP JP61092982A patent/JPS62248682A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4973017A (en) * | 1972-11-14 | 1974-07-15 | ||
| JPS52143035A (en) * | 1976-05-24 | 1977-11-29 | Nippon Telegr & Teleph Corp <Ntt> | Heat recording method |
| JPS5494331A (en) * | 1978-01-09 | 1979-07-26 | Nippon Denso Co Ltd | Preparation of light and dark pattern |
| JPS5625494A (en) * | 1979-08-10 | 1981-03-11 | Tokyo Computer Control Kk | Engraving design, etc. by use of heat rays |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0416074B2 (en) | 1992-03-19 |
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