JPH0121789B2 - - Google Patents
Info
- Publication number
- JPH0121789B2 JPH0121789B2 JP58101757A JP10175783A JPH0121789B2 JP H0121789 B2 JPH0121789 B2 JP H0121789B2 JP 58101757 A JP58101757 A JP 58101757A JP 10175783 A JP10175783 A JP 10175783A JP H0121789 B2 JPH0121789 B2 JP H0121789B2
- Authority
- JP
- Japan
- Prior art keywords
- ink ribbon
- ink
- laser
- laser light
- temperature
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/38—Preheating, i.e. heating to a temperature insufficient to cause printing
Landscapes
- Electronic Switches (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、レーザ光をインクリボンに照射し、
熱溶融したインクを普通紙等に転写して記録する
レーザ熱転写記録装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention irradiates an ink ribbon with a laser beam,
The present invention relates to a laser thermal transfer recording device that transfers and records heat-molten ink onto plain paper or the like.
（従来の技術）
従来、透明基紙の一面にインク層を形成してな
るインクリボンにレーザ光を照射し、インク層で
光を吸収させて発熱溶融させ、これを普通紙に転
写して記録する記録方式がある。第１図は、この
種の記録方式の概略を示したものであり、１はレ
ーザ光源、２はレーザ光源１から出射されたレー
ザ光を収束する光学系、３はこのレーザ光を偏向
する偏向装置、４は透明基紙５の一面にインク層
６を形成したインクリボン、７は普通紙である。
偏向装置３を経たレーザ光がインクリボンに照射
されると、インク層で光が吸収され、その部分の
インクが発熱溶融して普通紙７に転写される。(Prior art) Conventionally, an ink ribbon consisting of an ink layer formed on one side of transparent base paper is irradiated with laser light, the ink layer absorbs the light and melts with heat, and this is transferred to plain paper for recording. There is a recording method to do this. Figure 1 shows an outline of this type of recording method, where 1 is a laser light source, 2 is an optical system that converges the laser light emitted from the laser light source 1, and 3 is a deflector that deflects this laser light. In the apparatus, 4 is an ink ribbon having an ink layer 6 formed on one side of transparent base paper 5, and 7 is plain paper.
When the ink ribbon is irradiated with the laser light that has passed through the deflection device 3, the light is absorbed by the ink layer, and the ink in that area is heated and melted and transferred onto the plain paper 7.
ところで、この記録方式は、インク層での発熱
溶融に比較的大きな光エネルギーを必要とし、そ
のため低出力レーザによる高速記録に限界があつ
た。具体例で示すと、いま、８ドツト／mmの画像
密度で、A4サイズの画像を形成する場合を考え
る。インク層の厚みを５ミクロンとし、画素サイ
ズを125ミクロンとして、インクの融点100℃、溶
融前のインクリボンの温度を25℃とすると、１画
素分のインクを溶融するに要するエネルギーは
3.13×10-5ジユールとなる。従つて、1Wの出力
をもつレーザを用いた場合、１画素形成には30マ
イクロ秒を要する。実際には、約300マイクロ秒
と計算値の一桁大きな値となる。これは、インク
リボンの基紙や紙への熱の散逸によるものであ
り、画素サイズが小さくなるに従い、計算値との
差は大きくなる。実用的な画素形成の速度は１ラ
イン当たり１ミリ秒程度必要であり、１画素当た
り１マイクロ秒以下の書込速度を実現する必要が
ある。このため、レーザ出力は数十Ｗを要し、技
術的、コスト的な困難を生じることになる。 However, this recording method requires a relatively large amount of light energy to generate heat and melt the ink layer, and therefore there is a limit to high-speed recording using a low-output laser. To give a specific example, let's consider a case where an A4 size image is to be formed at an image density of 8 dots/mm. Assuming that the thickness of the ink layer is 5 microns, the pixel size is 125 microns, the melting point of the ink is 100°C, and the temperature of the ink ribbon before melting is 25°C, the energy required to melt one pixel of ink is:
It becomes 3.13×10 -5 joules. Therefore, when using a laser with an output of 1 W, it takes 30 microseconds to form one pixel. In reality, it is approximately 300 microseconds, which is an order of magnitude larger than the calculated value. This is due to heat dissipation to the base paper of the ink ribbon and paper, and as the pixel size becomes smaller, the difference from the calculated value becomes larger. Practical pixel formation speed is about 1 millisecond per line, and it is necessary to realize a writing speed of 1 microsecond or less per pixel. Therefore, a laser output of several tens of W is required, resulting in technical and cost difficulties.
これに対して、レーザ光を照射して記録を行な
う記録部に達する前のインクリボンを予め加熱し
てある温度まで高め、インク溶融温度との差を小
さくしておくことにより、レーザパワーを大きく
せずに記録を行なうようにした提案がなされてい
る（例えば特開昭55−117687号公報参照）。 On the other hand, by heating the ink ribbon before it reaches the recording section where laser light is irradiated and records to a certain temperature and keeping the difference from the ink melting temperature small, the laser power can be increased. Proposals have been made to record data without having to do so (see, for example, Japanese Patent Application Laid-Open No. 117687/1987).
（発明が解決しようとする課題）
しかしながら、インクリボンの熱容量は小さ
く、かつインク部の熱応答速度は数十〜数百マイ
クロ秒程度であり、かつ予備加熱部から記録部ま
である程度の距離があるため、予備加熱されてか
ら記録部位に達するまでの間に熱放散があり、従
つて、記録部位外で予備加熱を行なう場合は、精
度の高い加熱制御が困難であるという問題があつ
た。(Problem to be solved by the invention) However, the heat capacity of the ink ribbon is small, the thermal response speed of the ink section is about several tens to hundreds of microseconds, and there is a certain distance from the preheating section to the recording section. Therefore, there is heat dissipation between the time of preheating and the time of reaching the recording site.Therefore, when preheating is performed outside the recording site, there is a problem in that highly accurate heating control is difficult.
本発明は、上記従来技術の問題点を解決するも
ので、レーザ光を照射して記録を行なう記録部に
おいて、インクリボンを予備加熱し、光エネルギ
ーによる所要温度上昇範囲を狭くして、低出力レ
ーザによる高速で、安定な記録を可能にしたレー
ザ熱転写記録装置を提供するものである。 The present invention solves the above-mentioned problems of the prior art.The present invention preheats the ink ribbon in the recording section that performs recording by irradiating laser light, narrowing the required temperature rise range due to light energy, and reducing output. The present invention provides a laser thermal transfer recording device that enables high-speed, stable recording using a laser.
また、インクリボンは、環境やインク層の構成
材料によつて発熱溶融に必要な光エネルギーが異
なるが、このような環境温度変化や種々のインク
リボンに対応して、安定な予備加熱を行なうよう
にしたレーザ熱転写記録装置を提供するものであ
る。 In addition, the light energy required for heat generation and melting of ink ribbons differs depending on the environment and the constituent materials of the ink layer, but in response to such environmental temperature changes and various ink ribbons, it is necessary to perform stable preheating. The present invention provides a laser thermal transfer recording device with the following features.
（課題を解決するための手段）
上記目的を達成するために、インクリボンに対
してレーザ光を照射する記録部位で普通紙等に密
着させるようにインクリボンを押え、かつそのイ
ンクリボンを予備加熱するインクリボン押え板を
有し、その押え板は、透明絶縁基板の少なくとも
一方の主面に、通電することにより発熱する透明
導電膜を形成した構成とする。さらに、インクリ
ボン押え板の一部に、透明導電膜の通電発熱の温
度制御をするための温度センサを配設する。(Means for Solving the Problems) In order to achieve the above object, the ink ribbon is held so that it comes into close contact with plain paper, etc. at the recording area where the ink ribbon is irradiated with laser light, and the ink ribbon is preheated. The ink ribbon holding plate has a configuration in which a transparent conductive film that generates heat when electricity is applied is formed on at least one main surface of a transparent insulating substrate. Furthermore, a temperature sensor for controlling the temperature of the transparent conductive film generated by electricity is disposed in a part of the ink ribbon holding plate.
（作用）
この構成によれば、レーザ光を照射して記録を
行なう記録部において、押え板でインクリボンを
押えると同時に、その押え板に配設した透明導電
膜の通電発熱により予備加熱を行なう。さらに、
通電発熱の温度制御をするための温度センサによ
り、環境温度変化やインクリボンの種類に対応し
て所望の温度に予備加熱する。(Function) According to this configuration, in the recording section that performs recording by irradiating laser light, the ink ribbon is pressed by the presser plate, and at the same time, the ink ribbon is preheated by electricity generated by the transparent conductive film disposed on the presser plate. . moreover,
A temperature sensor is used to control the temperature of heat generated by electricity, and preheats to a desired temperature in response to environmental temperature changes and the type of ink ribbon.
（実施例）
以下、図面を参照して実施例を詳細に説明す
る。第２図は、本発明の一実施例を示したもの
で、第１図と同一符号のものは同一のものを示し
ており、また、９は、透明絶縁基板１０の一方の
主面に透明導電膜１１を形成したインクリボン押
え板、１２は温度センサ、１４は温度設定部、１
３は、温度設定部からの基準信号と通電発熱温度
を検出した温度センサ１２からの検出信号とで、
透明電極膜１１の通電制御を行なう制御部であ
る。透明絶縁基板１０は例えばガラス板が使用さ
れ、また透明導電膜１１としては膜厚0.01〜１ミ
クロン程度のITO、酸化錫あるいは酸化亜鉛等が
使用できる。この透明導電膜１１に電流を流すこ
とによりジユール熱が発生する。(Example) Hereinafter, an example will be described in detail with reference to the drawings. FIG. 2 shows an embodiment of the present invention, in which the same reference numerals as in FIG. An ink ribbon holding plate on which a conductive film 11 is formed, 12 a temperature sensor, 14 a temperature setting section, 1
3 is a reference signal from the temperature setting section and a detection signal from the temperature sensor 12 that detects the energized heat generation temperature.
This is a control section that controls energization of the transparent electrode film 11. For example, a glass plate is used as the transparent insulating substrate 10, and as the transparent conductive film 11, ITO, tin oxide, zinc oxide, or the like having a film thickness of about 0.01 to 1 micron can be used. By passing a current through this transparent conductive film 11, Joule heat is generated.
次に、本実施例の動作を説明する。普通紙７と
インクリボン４が重なつて記録部に搬送され、普
通紙にインクリボンを密着するように押え板９で
押える。同時に制御部１３から透明電極膜１１に
電気エネルギーが印加され、通電により発生する
ジユール熱でインクリボン４が予め設定された温
度に加熱される。一方、偏向装置を経たレーザ光
Ｌは、透明絶縁基板１０及び透明導電膜１１を通
つてインクリボン４に入射され、インク層が選択
的に溶融されて普通紙７に転写される。 Next, the operation of this embodiment will be explained. The plain paper 7 and the ink ribbon 4 are conveyed to the recording section in an overlapping manner, and are pressed by a presser plate 9 so as to bring the ink ribbon into close contact with the plain paper. At the same time, electrical energy is applied from the control unit 13 to the transparent electrode film 11, and the ink ribbon 4 is heated to a preset temperature by the Joule heat generated by the energization. On the other hand, the laser beam L that has passed through the deflection device is incident on the ink ribbon 4 through the transparent insulating substrate 10 and the transparent conductive film 11, and the ink layer is selectively melted and transferred onto the plain paper 7.
以上の構成において、インク層を溶融し転写が
可能な温度をＴ、予備加熱により上昇したインク
層の温度をT0とすると、予備加熱を行なわない
従来技術に比べて（Ｔ−T0）／（Ｔ−Troom）
の光エネルギーで済むことになる。さらに、記録
部での予備加熱に対して熱容量の小さいインクリ
ボン４が即応して温度上昇するので、低出力レー
ザで高速熱転写記録が可能になる。しかも温度セ
ンサ１２により所定の温度に制御されるので、環
境温度の変化に対してもインクリボン４の予備加
熱を常に一定にすることができ、従つて、安定し
た記録が可能になる。また、インクリボンの種類
が異なり、インク層の溶融可能な温度が変つて
も、インクリボンの予備加熱温度の設定を変える
だけでよいから、従来のように、レーザの出力を
変えたり、あるいは高出力レーザを使用する必要
がなくなる。 In the above configuration, if the temperature at which the ink layer can be melted and transferred is T, and the temperature of the ink layer increased by preheating is T 0 , then (T - T 0 )/ (T-Troom)
This means that only 100% of light energy is needed. Furthermore, since the temperature of the ink ribbon 4, which has a small heat capacity, increases in response to the preheating in the recording section, high-speed thermal transfer recording is possible with a low output laser. Moreover, since the temperature is controlled to a predetermined temperature by the temperature sensor 12, the preheating of the ink ribbon 4 can always be kept constant even when the environmental temperature changes, and therefore stable recording is possible. Furthermore, even if the type of ink ribbon is different and the temperature at which the ink layer can be melted changes, all you need to do is change the preheating temperature setting of the ink ribbon. Eliminates the need to use an output laser.
なお、透明絶縁基板１０の一面又は両面に形成
される透明導電膜は、光の反射防止機構を有し、
膜厚を適度に設定することにより、基板面での反
射率を低減することができるから、光エネルギー
の利用効率を高め、より低出力で記録することが
できる。 Note that the transparent conductive film formed on one or both surfaces of the transparent insulating substrate 10 has a light reflection prevention mechanism,
By setting the film thickness appropriately, it is possible to reduce the reflectance on the substrate surface, thereby increasing the utilization efficiency of optical energy and recording at lower output.
（発明の効果）
以上説明したように、本発明によれば、レーザ
光を照射して記録を行なう記録部において、イン
クリボンを押えるとともに予備加熱を行ない、イ
ンク層の溶融温度とインクリボンの温度との差を
小さくするので、低出力レーザにより、高速で、
安定な記録を行なうことができる。さらに、環境
温度変化やインクリボンの種類にも十分対応し
て、安定な熱転写記録を行なうことができる。(Effects of the Invention) As explained above, according to the present invention, in the recording section that performs recording by irradiating laser light, the ink ribbon is pressed and preheated, and the melting temperature of the ink layer and the temperature of the ink ribbon are This reduces the difference between
Stable recording can be performed. Furthermore, it is possible to perform stable thermal transfer recording, sufficiently responding to changes in environmental temperature and types of ink ribbons.
第１図は、従来のレーザ熱転写記録方式の概略
を説明する図、第２図は、本発明の一実施例の要
部構成図である。
１…レーザ光源、２…光学系、３…偏向装置、
４…インクリボン、５…透明基紙、６…インク
層、７…普通紙、９…押え板、１０…透明絶縁基
板、１１…透明導電膜、１２…温度センサ、１３
…制御部、１４…温度設定部。
FIG. 1 is a diagram illustrating an outline of a conventional laser thermal transfer recording method, and FIG. 2 is a diagram showing the main part of an embodiment of the present invention. 1... Laser light source, 2... Optical system, 3... Deflection device,
4... Ink ribbon, 5... Transparent base paper, 6... Ink layer, 7... Plain paper, 9... Presser plate, 10... Transparent insulating substrate, 11... Transparent conductive film, 12... Temperature sensor, 13
...control section, 14...temperature setting section.
Claims (1)
レーザ光を収束する光学系と、レーザ光を偏向す
る光偏向装置とを備え、透明基紙にインク層を形
成したインクリボンにレーザ光を照射して熱溶融
したインクを普通紙等に転写するレーザ熱転写記
録装置において、 前記インクリボンに対してレーザ光を照射する
記録部で普通紙等に密着させるように前記インク
リボンを押え、かつ前記インクリボンを予備加熱
するインクリボン押え板を有し、前記押え板は、
透明絶縁基板の少なくとも一方の主面に、通電す
ることにより発熱する透明導電膜を形成してなる
ことを特徴とするレーザ熱転写記録装置。 ２ インクリボン押え板は、その一部に、前記透
明導電膜の通電発熱の温度制御をするための温度
センサを具備することを特徴とする特許請求の範
囲第１項記載のレーザ熱転写記録装置。[Claims] 1. An ink ribbon comprising a laser light source, an optical system that converges the laser light emitted from the laser light source, and a light deflection device that deflects the laser light, and in which an ink layer is formed on a transparent base paper. In a laser thermal transfer recording device that transfers thermally melted ink onto plain paper, etc. by irradiating a laser beam onto the ink ribbon, the ink ribbon is brought into close contact with the plain paper, etc. by a recording section that irradiates the ink ribbon with a laser beam. an ink ribbon presser plate for preheating the ink ribbon;
A laser thermal transfer recording device characterized in that a transparent conductive film that generates heat when electricity is applied is formed on at least one main surface of a transparent insulating substrate. 2. The laser thermal transfer recording apparatus according to claim 1, wherein the ink ribbon pressing plate is provided with a temperature sensor in a part thereof for controlling the temperature of heat generated by energization of the transparent conductive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58101757A JPS59227468A (en) | 1983-06-09 | 1983-06-09 | Laser thermal transfer recording apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58101757A JPS59227468A (en) | 1983-06-09 | 1983-06-09 | Laser thermal transfer recording apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59227468A JPS59227468A (en) | 1984-12-20 |
| JPH0121789B2 true JPH0121789B2 (en) | 1989-04-24 |
Family
ID=14309100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58101757A Granted JPS59227468A (en) | 1983-06-09 | 1983-06-09 | Laser thermal transfer recording apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59227468A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63134289A (en) * | 1986-11-26 | 1988-06-06 | Canon Inc | Thermal transfer recording method |
| DE3710183A1 (en) * | 1987-03-27 | 1988-10-13 | Siemens Ag | DEVICE FOR LASER TRANSFER PRINTING |
| JP2592415B2 (en) * | 1987-07-08 | 1997-03-19 | 大日本印刷株式会社 | Thermal transfer recording method |
| FR2810920A1 (en) * | 2000-06-29 | 2002-01-04 | Afkar Changriha | Thermal transfer printing, uses modulated light to adhere powder to face of ribbon for transfer when ribbon is heated |
| US6493014B2 (en) * | 2000-12-22 | 2002-12-10 | Impress Systems | Optical security device printing system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5359833U (en) * | 1976-10-23 | 1978-05-22 | ||
| JPS54157627A (en) * | 1978-06-02 | 1979-12-12 | Nippon Telegr & Teleph Corp <Ntt> | Thermographic method |
| JPS5557494A (en) * | 1978-10-26 | 1980-04-28 | Ricoh Co Ltd | Photo and heat-sensitive recording device |
| JPS55117687A (en) * | 1979-03-05 | 1980-09-10 | Nippon Telegr & Teleph Corp <Ntt> | Direct recording method by laser |
| JPS5664370A (en) * | 1979-10-29 | 1981-06-01 | Fuji Xerox Co Ltd | Optical image-thermal image conversion plate |
-
1983
- 1983-06-09 JP JP58101757A patent/JPS59227468A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59227468A (en) | 1984-12-20 |
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