JPH0825044B2 - Laser printer - Google Patents
Laser printerInfo
- Publication number
- JPH0825044B2 JPH0825044B2 JP1152783A JP15278389A JPH0825044B2 JP H0825044 B2 JPH0825044 B2 JP H0825044B2 JP 1152783 A JP1152783 A JP 1152783A JP 15278389 A JP15278389 A JP 15278389A JP H0825044 B2 JPH0825044 B2 JP H0825044B2
- Authority
- JP
- Japan
- Prior art keywords
- mirror scanner
- laser
- liquid crystal
- transmission
- scanner
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
- B23K26/0821—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head using multifaceted mirrors, e.g. polygonal mirror
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Liquid Crystal (AREA)
- Laser Beam Processing (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は，レーザ光により文字や図形を刻印面に刻印
するレーザ印字装置に関する。Description: TECHNICAL FIELD The present invention relates to a laser printing apparatus for marking characters or figures on a marking surface with laser light.
［従来の技術］ 従来，レーザ印字装置としては， （１）レーザ光を金属マスク面に直接，かつ，スポット
に照射し，該照射部を蒸発させ，文字や図形を刻印する
もの， （２）２枚のミラーをガルバノスキャナ等で縦横操作
し，これらガルバノミラーを介し，文字や図形を刻印面
に刻印するもの， （３）偏光板と液晶とを用い，この液晶に任意に文字や
図形を形成せしめ，レーザ光にコントラストを付与し，
刻印面にこれらの文字や図形を刻印するもの， 以上のものが知られる。[Prior Art] Conventionally, as a laser printing device, (1) a device that directly irradiates a laser beam on a metal mask surface and a spot, evaporates the irradiation portion, and engraves characters and figures, (2) The two mirrors are operated vertically and horizontally by a galvano scanner or the like, and characters or figures are engraved on the engraved surface through these galvano mirrors. (3) Using a polarizing plate and a liquid crystal, the characters and figures can be arbitrarily placed on this liquid crystal. Form it, add contrast to the laser light,
It is known to engrave these characters and figures on the engraved surface, and the above.
［発明が解決しようとする課題］ しかしながら，上記従来のレーザ印字装置には次に掲
げる不都合がある。即ち， （１）金属マスク方式は，レーザ照射を直接行うため，
文字や図形を任意に刻印することができないという不都
合がある。また金属マスクのミラーによる選択法におい
ては文字や図形の種類が限られるという欠点がある。[Problems to be Solved by the Invention] However, the conventional laser printer described above has the following disadvantages. That is, (1) In the metal mask method, laser irradiation is performed directly,
There is an inconvenience that characters and figures cannot be arbitrarily marked. Further, the selection method using the mirror of the metal mask has a drawback that the types of characters and figures are limited.
（２）２枚のミラーとそのガルバノスキャナとによる方
式は，任意な文字や図形を刻印しようとすると，ガルバ
ノスキャナの縦横操作のための制御系が複雑となる。こ
のため，ハードウエア及びソフトウエアが大掛りになっ
てしまうという不都合がある。(2) In the method using the two mirrors and the galvano scanner, if an arbitrary character or figure is to be imprinted, the control system for vertical and horizontal operation of the galvano scanner becomes complicated. Therefore, there is an inconvenience that the size of hardware and software becomes large.
（３）偏光板と液晶とによる方式では，偏向板において
30〜40％の透過率ロスが生ずるため，印字のためのレー
ザパワーが小さくなる。このため，そのロスパワー分だ
けレーザ発振器を大型化する必要がある。かかる結果，
装置全体が大型化し，かつ，高価になるという不都合が
ある。しかも大型化するにも，液晶を損なわない程度の
大型出力のレーザ発振器に限定されるという不都合があ
る。(3) In the method using a polarizing plate and a liquid crystal,
Since the transmission loss of 30-40% occurs, the laser power for printing becomes small. For this reason, it is necessary to increase the size of the laser oscillator by the loss power. As a result,
There are inconveniences that the entire device becomes large and expensive. Moreover, even if the size is increased, there is a disadvantage that it is limited to a laser oscillator with a large output that does not damage the liquid crystal.
本発明は上記従来の問題に鑑み，任意な文字や図形
を，小容量のレーザ発振器で，しかも場積をとることな
く，容易に，かつ，高精度に刻印できるレーザ印字装置
を提供することを目的とする。In view of the above-mentioned conventional problems, the present invention provides a laser printing apparatus capable of easily and highly accurately marking arbitrary characters or figures with a laser oscillator having a small capacity and without taking a space. To aim.
［課題を解決するための手段］ 上記目的を達成するため，本発明に係わるレーザ印字
装置は，第１図を参照し説明すれば，レーザ発振器１か
ら刻印面６までの間のレーザ光路Ｓ上に，順に，ポリゴ
ンミラースキャナ２と，ガルバノミラースキャナ３と，
透過散乱型液晶マスク４と，オプチカルファイバ集合レ
ンズ５とを備える構成とした。尚，ポリゴンミラースキ
ャナ２と，ガルバノミラースキャナ３との順は逆であっ
てもよい。更に，ガルバノミラースキャナ３について
は，いわゆるACモータ又はステップモータ等の制御容易
な高速モータにより駆動されるミラースキャナであって
もよい。[Means for Solving the Problems] In order to achieve the above object, the laser printing apparatus according to the present invention will be described on the laser optical path S from the laser oscillator 1 to the marking surface 6 by referring to FIG. Then, in order, a polygon mirror scanner 2, a galvano mirror scanner 3,
The configuration includes a transmission / scattering type liquid crystal mask 4 and an optical fiber collective lens 5. The order of the polygon mirror scanner 2 and the galvano mirror scanner 3 may be reversed. Further, the galvano mirror scanner 3 may be a mirror scanner driven by a high-speed motor such as a so-called AC motor or step motor that can be easily controlled.
［作用］ かかる第１発明の構成であれば，レーザ発振器１から
発振されたレーザ光Ｓは，まずポリゴンミラースキャナ
２に照射される。ポリゴンミラースキャナ２は数千回転
／分のモータ軸に複数枚のミラーを多角形に備えた構成
であり，回転するミラーへの入射レーザ光は，図示Ｘ−
Ｘ方向に幅をもって反射する。この反射レーザ光はガル
バノミラースキャナ３に入射する。そして，このガルバ
ノミラースキャナ３の反射レーザ光は，図示Ｙ−Ｙ方向
に幅をもって反射する。即ち，ポリゴンミラースキャナ
２と，ガルバノミラースキャナ３とにより,X−Ｙ方向
（簡単に言えば，縦横方向）に走査される。そして走査
されつつ，透過散乱型液晶マスク４の全面域に照射され
る。この透過散乱型液晶マスク４には図形や文字が任意
に形成される。そして，文字や図形に相当する部位を透
過したレーザ光のみがオプチカルファイバ集合レンズ５
を経て，刻印面６に至り，ここにこれらの文字や図形を
刻印する。透過散乱型液晶マスク４において，図形や文
字を形成しない部位（即ち，透過しない部位）のレーザ
光はその部位において散乱するため，被検体に影響を与
えない。[Operation] With the configuration of the first invention, the laser light S oscillated from the laser oscillator 1 is first applied to the polygon mirror scanner 2. The polygon mirror scanner 2 has a configuration in which a plurality of mirrors are provided in a polygonal shape on a motor shaft of several thousand revolutions / minute, and the incident laser light to the rotating mirror is X-
Reflects with a width in the X direction. This reflected laser light is incident on the galvanometer mirror scanner 3. The reflected laser light from the galvanometer mirror scanner 3 is reflected with a width in the Y-Y direction in the drawing. That is, the polygon mirror scanner 2 and the galvano mirror scanner 3 scan in the XY directions (in short, the vertical and horizontal directions). Then, while scanning, the entire area of the transmission / scattering type liquid crystal mask 4 is irradiated. On the transmission / scattering type liquid crystal mask 4, figures and characters are arbitrarily formed. Then, only the laser light transmitted through the portion corresponding to the character or figure is collected by the optical fiber collective lens 5
After that, the marking surface 6 is reached, and these characters and figures are marked here. In the transmission / scattering type liquid crystal mask 4, the laser light of a portion where a figure or character is not formed (that is, a portion which does not pass through) is scattered at that portion, and therefore does not affect the subject.
第２の発明は，ポリゴンミラースキャナ２と，ガルバ
ノミラースキャナ３との順を逆にしただけの構成であ
る。また第３の発明は，ガルバノスキャナを他のモータ
に変更しただけの構成である。The second aspect of the invention has a configuration in which the polygon mirror scanner 2 and the galvano mirror scanner 3 are simply reversed in order. The third invention has a configuration in which the galvano scanner is simply changed to another motor.
［実施例］ 以下本発明の実施例を図面を参照し詳細に説明する。
第１図は第１発明の実施例を示す図である。第１図にお
いて，レーザ発振器１から刻印面６までの間のレーザ光
路Ｓ上に，順に，ポリゴンミラースキャナ２と，ガルバ
ノミラースキャナ３と，透過散乱型液晶マスク４と，オ
プチカルファイバ集合レンズ５とを備えた構成である。
作動を述べれば，レーザ発振器１から発振されたレーザ
光Ｓは，まずポリゴンミラースキャナ２に照射される。
ポリゴンミラースキャナ２は，第２図に示す構成となっ
ており,7,500rpmのモータ軸に複数枚のミラーをポリゴ
ン（実施例では10角形）に備えたものである。従って，
回転するポリゴンミラーへの入射レーザ光は，図示Ｘ−
Ｘ方向に幅をもって反射する。この反射レーザ光はガル
バノミラースキャナ３に入射する。そして，このガルバ
ノミラースキャナ３の反射レーザ光は，図示Ｙ−Ｙ方向
に幅をもって反射する。即ち，ポリゴンミラースキャナ
２と，ガルバノミラースキャナ３とにより,X−Ｙ方向
（簡単に言えば，縦横方向全域）に，かつ，透過散乱型
液晶マスク４の全面域に照射される。この透過散乱型液
晶マスク４には，別途制御器により任意の図形や文字が
形成される。そして文字や図形に相当する部位を透過し
たレーザ光のみがオプチカルファイバ集合レンズ５を経
て，刻印面６に至り，ここにこれらの文字や図形を刻印
する。尚，前記透過散乱型液晶マスク４において，図形
や文字を形成しない部位（即ち，透過しない部位）のレ
ーザ光はその部位において散乱し，被検体に影響を及ぼ
さない（尚，透過散乱型液晶マスク４への電極への印加
電圧を制御することにより透過率を変更し刻印の程度，
例えば深さ等を制御することも可能である）。次に実施
例の効果を以下説明する。まずポリゴンミラースキャナ
２と，ガルバノミラースキャナ３とは高速スキャナであ
り，このため透過散乱型液晶マスク４上の全面域へのレ
ーザ照射は数百回／分となる。仮にある図形が透過散乱
型液晶マスク４上に１秒間だけ形成されていても，その
図形のどの部位に対しても，各々10回程度レーザ照射を
することができる（いわゆる重ね打ちをすることがであ
る）。このように重ね打ちをすることができるため，レ
ーザ出力が小さいレーザ発振器であっても実施例に使用
することができる。更に透過散乱型液晶マスク４は偏光
板や偏光ミラーを使用していないため，従来のような偏
光板や偏光ミラーによる透過率の低下がなくなる。この
結果更にレーザ出力が小さなレーザ発振器であっても使
用することができる。またオプチカルファイバ集合レン
ズ５はそれ自体が収差を伴わないこと，また，像面間距
離が極めて小さいこと（通常球面レンズの1/30〜1/100
の距離）という長所を備えているため，刻印を鮮明にで
き，かつ，装置全体の場積も小さくすることが可能とな
る。Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.
FIG. 1 is a diagram showing an embodiment of the first invention. In FIG. 1, a polygon mirror scanner 2, a galvanometer mirror scanner 3, a transmission / scattering type liquid crystal mask 4, an optical fiber collective lens 5 are sequentially provided on a laser optical path S between the laser oscillator 1 and the marking surface 6. It is a configuration provided with.
In operation, the laser light S emitted from the laser oscillator 1 is first applied to the polygon mirror scanner 2.
The polygon mirror scanner 2 has the configuration shown in FIG. 2, and is provided with a plurality of mirrors (decagons in the embodiment) on a motor shaft of 7,500 rpm. Therefore,
The incident laser light on the rotating polygon mirror is shown by X- in the figure.
Reflects with a width in the X direction. This reflected laser light is incident on the galvanometer mirror scanner 3. The reflected laser light from the galvanometer mirror scanner 3 is reflected with a width in the Y-Y direction in the drawing. That is, the polygon mirror scanner 2 and the galvanometer mirror scanner 3 irradiate the entire area of the transmission / scattering type liquid crystal mask 4 in the XY directions (in short, the entire area in the vertical and horizontal directions). On the transmission / scattering type liquid crystal mask 4, arbitrary figures and characters are formed by a separate controller. Then, only the laser light transmitted through the portions corresponding to the characters and figures reaches the marking surface 6 through the optical fiber collective lens 5, and these characters and figures are marked here. Incidentally, in the transmission / scattering type liquid crystal mask 4, the laser light of a portion where a figure or a character is not formed (that is, a portion which does not transmit) is scattered at the portion and does not affect the object (the transmission / scattering type liquid crystal mask). By changing the voltage applied to the electrode to 4, the transmittance is changed to
For example, it is possible to control the depth etc.). Next, the effect of the embodiment will be described below. First, the polygon mirror scanner 2 and the galvanometer mirror scanner 3 are high-speed scanners, and therefore the laser irradiation to the entire surface area of the transmission / scattering type liquid crystal mask 4 is several hundred times / minute. Even if a certain figure is formed on the transmission / scattering type liquid crystal mask 4 for only 1 second, laser irradiation can be performed about 10 times for each part of the figure. Is). Since the layers can be overlaid in this manner, even a laser oscillator having a small laser output can be used in the embodiment. Further, since the transmission / scattering type liquid crystal mask 4 does not use a polarizing plate or a polarizing mirror, there is no decrease in transmittance due to the conventional polarizing plate or polarizing mirror. As a result, even a laser oscillator having a smaller laser output can be used. Further, the optical fiber collective lens 5 itself has no aberration, and the distance between the image planes is extremely small (1/30 to 1/100 of that of a normal spherical lens).
Since it has the advantage of (distance), the marking can be made clear and the space of the entire device can be reduced.
第２発明の実施例は，ポリゴンミラースキャナ２と，
ガルバノミラースキャナ３との順を逆にしただけの構成
である（図示せず）。従ってＸ−Ｙ方向ではなくＹ−Ｘ
方向に順に走査されるだけであり，その他の作用及び効
果は上記実施例と同様である。また第３発明の実施例
は，ガルバノスキャナを他のモータに変更しただけの構
成である（図示せず）。この作用及び効果についても，
上記第１発明の実施例と同様である。The embodiment of the second invention is a polygon mirror scanner 2,
The configuration is simply reversed from the order of the galvanometer mirror scanner 3 (not shown). Therefore, it is not X-Y direction but Y-X
Only the scanning is sequentially performed in the directions, and other operations and effects are the same as those in the above-described embodiment. The third embodiment of the invention has a configuration in which the galvano scanner is simply changed to another motor (not shown). Regarding this action and effect,
This is the same as the embodiment of the first invention.
［発明の効果］ 以上説明したように，本発明に係わるレーザ印字装置
によれば，レーザ発振器１から刻印面までの間のレーザ
光路上に，ポリゴンミラースキャナと，回転ミラースキ
ャナと，透過散乱型液晶マスクと，オプチカルファイバ
集合レンズとを備えた構成により，高速重ね打ちをする
ことができ，かつ，偏光による透過ロスがないため，高
精度の印字を小容量のレーザ発振器ですることができる
ようになる。更に収差がなく，かつ，像面間距離が小さ
いため，装置自体の場積をも小さくすることができるよ
うになる。[Effects of the Invention] As described above, according to the laser printing apparatus of the present invention, the polygon mirror scanner, the rotary mirror scanner, and the transmission / scattering type are provided on the laser optical path between the laser oscillator 1 and the marking surface. High-precision overprinting can be performed with a configuration including a liquid crystal mask and an optical fiber collective lens, and since there is no transmission loss due to polarization, high-precision printing can be performed with a small-capacity laser oscillator. become. Furthermore, since there is no aberration and the distance between the image planes is small, the field product of the device itself can be reduced.
第１図は第１発明に係わるレーザ印字装置の実施例を示
す図，第２図はポリゴンミラースキャナの構成を説明す
る図である。 １……レーザ発振器 ２……ポリゴンミラースキャナ ３……ガルバノミラースキャナ ４……透過散乱型液晶マスク ５……オプチカルファイバ集合レンズ ６……刻印面FIG. 1 is a diagram showing an embodiment of a laser printer according to the first invention, and FIG. 2 is a diagram for explaining the configuration of a polygon mirror scanner. 1 ... Laser oscillator 2 ... Polygon mirror scanner 3 ... Galvano mirror scanner 4 ... Transmissive scattering liquid crystal mask 5 ... Optical fiber collective lens 6 ... Engraved surface
Claims (3)
ーザ光路上に、順に、ポリゴンミラースキャナ２と、ガ
ルバノミラースキャナ３と、透過散乱型液晶マスク４
と、オプチカルファイパ集合レンズ５とを設けた構成を
特徴とするレーザ印字装置。1. A polygon mirror scanner 2, a galvano mirror scanner 3, and a transmission / scattering type liquid crystal mask 4 in order on a laser optical path between a laser oscillator 1 and a marking surface 6.
And a optical fiber collective lens 5 are provided.
ーザ光路上に、順に、ガルバノミラースキャナ３と、ポ
リゴンミラースキャナ２と、透過散乱型液晶マスク４
と、オプチカルファイパ集合レンズ５とを設けた構成を
特徴とするレーザ印字装置。2. A galvanometer mirror scanner 3, a polygon mirror scanner 2, and a transmission / scattering type liquid crystal mask 4 in this order on the laser optical path between the laser oscillator 1 and the marking surface 6.
And a optical fiber collective lens 5 are provided.
はステップモータ等の高速モータにより駆動されるミラ
ースキャナである請求項１又は請求項２記載のレーザ印
字装置。3. The laser printer according to claim 1, wherein the galvanometer mirror scanner 3 is a mirror scanner driven by a high speed motor such as an AC motor or a step motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1152783A JPH0825044B2 (en) | 1989-06-15 | 1989-06-15 | Laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1152783A JPH0825044B2 (en) | 1989-06-15 | 1989-06-15 | Laser printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0318491A JPH0318491A (en) | 1991-01-28 |
| JPH0825044B2 true JPH0825044B2 (en) | 1996-03-13 |
Family
ID=15548055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1152783A Expired - Fee Related JPH0825044B2 (en) | 1989-06-15 | 1989-06-15 | Laser printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0825044B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0540759B1 (en) * | 1991-05-21 | 1997-09-10 | Seiko Epson Corporation | Optical device and optical machining system using the optical device |
| EP0742071B1 (en) * | 1992-11-11 | 1999-10-06 | Kabushiki Kaisha Komatsu Seisakusho | Liquid crystal display for laser marker |
| JP2588281Y2 (en) * | 1992-11-25 | 1999-01-06 | 株式会社小松製作所 | Laser marking device |
| JP3265553B2 (en) * | 1994-08-19 | 2002-03-11 | 株式会社小松製作所 | Laser marking method |
| JP3242411B2 (en) * | 1996-09-13 | 2001-12-25 | 株式会社小松製作所 | Mask scanning laser marker and scanning method thereof |
| KR100414280B1 (en) * | 2001-11-09 | 2004-01-07 | 주식회사 엘지이아이 | Refrigerator with soft-freezig room |
| KR101602431B1 (en) | 2008-11-05 | 2016-03-10 | 삼성전자 주식회사 | Refrigerator |
-
1989
- 1989-06-15 JP JP1152783A patent/JPH0825044B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0318491A (en) | 1991-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |