JPS6210136Y2 - - Google Patents
Info
- Publication number
- JPS6210136Y2 JPS6210136Y2 JP18244181U JP18244181U JPS6210136Y2 JP S6210136 Y2 JPS6210136 Y2 JP S6210136Y2 JP 18244181 U JP18244181 U JP 18244181U JP 18244181 U JP18244181 U JP 18244181U JP S6210136 Y2 JPS6210136 Y2 JP S6210136Y2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- thermal
- temperature
- preheating plate
- preheating
- 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
- 230000007423 decrease Effects 0.000 claims description 2
- 238000005338 heat storage Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
【考案の詳細な説明】
本考案は、サーマルプリンタあるいは熱転写プ
リンタ等の感熱記録装置に関するものである。更
に詳しくは、本考案は、例えば24×24あるいは1
×24のドツト発熱要素を有する発熱ヘツドを、用
紙上で所定方向に移動させて、用紙にドツトマト
リツクスで文字や図形等を記録させる方式の感熱
記録装置に関するものである。[Detailed Description of the Invention] The present invention relates to a thermal recording device such as a thermal printer or a thermal transfer printer. More specifically, the present invention can be used for example in 24×24 or 1
This invention relates to a heat-sensitive recording device that records characters, figures, etc. on a sheet of paper in a dot matrix by moving a heating head having 24 x 24 dot heating elements in a predetermined direction on the sheet of paper.
このような感熱記録装置における記録濃度は、
一般に発熱要素から発色剤あるいは転写剤へ与え
る熱エネルギーによつて決定されるものであつ
て、高い熱エネルギーで熱駆動した場合には、濃
い記録となり、低い熱エネルギーで熱駆動した場
合には、薄い記録となる。一方発熱ヘツドは、一
定の面積の基板と複数の発熱要素から構成されて
おり、そこには多少の蓄熱効果がある。このため
に、高速で熱ヘツドを一方向に移動させつつ、記
録を行うと、熱ヘツド自体の温度が蓄熱効果によ
つて次第に上昇し、熱ヘツドの動き始めは例えば
薄い記録で、熱ヘツドの移動に従つて濃い記録と
なる欠点がある。 The recording density in such a thermal recording device is
Generally, it is determined by the thermal energy applied from the heating element to the color forming agent or transfer agent, and when thermally driven with high thermal energy, a dark recording is produced, and when thermally driven with low thermal energy, This is a poor record. On the other hand, the heat generating head is composed of a substrate with a certain area and a plurality of heat generating elements, and has a certain heat storage effect. For this reason, when recording is performed while moving the thermal head in one direction at high speed, the temperature of the thermal head itself gradually rises due to the heat storage effect. The disadvantage is that the recording becomes darker as it moves.
このような欠点をなくするには、熱ヘツドの蓄
熱効果をなくするか、あるいは、熱ヘツドの温度
が所定温度まで落ちるのを待つて、次の熱駆動を
行えばよい。しかしながら、前者は実際上むずか
しく、また、後者の手法は高速記録を行えない問
題点がある。 In order to eliminate these drawbacks, the heat storage effect of the thermal head can be eliminated, or the next thermal drive can be performed after waiting for the temperature of the thermal head to drop to a predetermined temperature. However, the former method is difficult in practice, and the latter method has the problem of not being able to perform high-speed recording.
ここにおいて、本考案は、高速で、かつ均一濃
度の記録が簡単な構成で行なえる感熱記録装置を
提供しようとするものである。 It is an object of the present invention to provide a heat-sensitive recording device that can perform high-speed recording with uniform density with a simple configuration.
本考案に係る装置は、記録されるべき用紙を、
熱ヘツドの移動方向に温度勾配をもつように、予
熱板によつて予熱するようにした点に特徹があ
る。 The device according to the present invention stores paper to be recorded.
The special feature is that the preheating plate is used to preheat the heat head so that there is a temperature gradient in the direction of movement of the heat head.
第1図は本考案に係る装置の一例を示す構成斜
視図である。ここでは、熱転写記録装置の場合を
例示する。図において、1は熱ヘツド、2はこの
熱ヘツド1に接触する転写リボン、3は、熱ヘツ
ド1による熱エネルギーによつて転写リボン2の
インク層が溶解し、記録が行なわれる用紙、4は
プラテンである。熱ヘツド1及び転写リボン2
は、案内軸11に沿つて移動する可動板10上に
塔載されており、くり糸12を介してステツプモ
ータ13により、矢印a方向に移動され、記録を
行う。また、用紙3は、熱ヘツド1の一走査ごと
に、一定量だけ、矢印b方向に繰り出される。 FIG. 1 is a perspective view showing an example of a device according to the present invention. Here, a case of a thermal transfer recording device will be exemplified. In the figure, 1 is a thermal head, 2 is a transfer ribbon in contact with the thermal head 1, 3 is a sheet of paper on which the ink layer of the transfer ribbon 2 is melted by the thermal energy of the thermal head 1, and recording is performed, and 4 is a sheet of paper on which recording is performed. It is a platen. Thermal head 1 and transfer ribbon 2
is mounted on a movable plate 10 that moves along a guide shaft 11, and is moved in the direction of arrow a via a thread 12 by a step motor 13 to perform recording. Further, the paper 3 is fed out by a certain amount in the direction of arrow b every time the thermal head 1 scans.
5は本考案で特徴としている予熱板で、記録前
の用紙3が予熱されるように、プラテン4の下側
(用紙が繰り出される側)に設置されている。こ
の予熱板5は、第2図に示すように、用紙3の搬
送方向(矢印b方向)の幅cが、熱ヘツド1の移
動方向(矢印a方向)に従つて狭くなるような三
角形状に構成されている。なお、この予熱板5に
は、図示してないが、電熱ヒータが結合してお
り、予熱板5を加熱している。 Reference numeral 5 denotes a preheating plate, which is a feature of the present invention, and is installed below the platen 4 (on the side from which the paper is fed out) so that the paper 3 is preheated before recording. As shown in FIG. 2, the preheating plate 5 has a triangular shape such that the width c in the conveying direction of the paper 3 (direction of arrow b) becomes narrower in the direction of movement of the thermal head 1 (direction of arrow a). It is configured. Although not shown, an electric heater is coupled to the preheating plate 5 to heat the preheating plate 5.
第4図は、予熱板5に結合している電熱ヒータ
50の温度制御回路の一例を示す接続図である。
この回路は、室温を検出する温度検出素子(例え
ばサーミスタ)Rtを有するブリツジ回路Bを含
んで構成されており、室温に応じて、予熱板5の
加熱温度を制御している。 FIG. 4 is a connection diagram showing an example of a temperature control circuit for the electric heater 50 coupled to the preheating plate 5. FIG.
This circuit includes a bridge circuit B having a temperature detection element (for example, a thermistor) Rt for detecting room temperature, and controls the heating temperature of the preheating plate 5 according to the room temperature.
このように構成される装置によれば、矢印b方
向に繰り出された用紙3は、予熱板5の所で予熱
され、用紙の温度が次第に上り、熱ヘツド1の移
動方向の各位置における用紙温度は、用紙3が予
熱板5に接触している時間に対応したものとな
る。したがつて、用紙3が順次矢印b方向に所定
のピツチで一定時間ごとに繰り出されるものとす
れば、予熱板5の幅の広い部分を通つた用紙3の
左側部分は、予熱時間が長くなるので温度が高
く、幅の狭い部分を通つた用紙の右側部分は、予
熱時間が短かくなるので温度が低くなり、熱ヘツ
ド1の移動方向に対して、第3図に示すような温
度勾配をもつように用紙3が予熱される。なお、
第3図において、x軸は用紙の矢印a方向の位置
を示しているものとする。 According to the device configured in this way, the paper 3 fed out in the direction of the arrow b is preheated at the preheating plate 5, and the temperature of the paper gradually rises, so that the paper temperature at each position in the moving direction of the thermal head 1 is adjusted. corresponds to the time during which the paper 3 is in contact with the preheating plate 5. Therefore, if the paper 3 is sequentially fed out in the direction of arrow b at a predetermined pitch at regular intervals, the preheating time will be longer for the left side portion of the paper 3 that has passed through the wide part of the preheating plate 5. Therefore, the right side of the paper, which has a high temperature and has passed through a narrow part, has a lower temperature because the preheating time is shorter, creating a temperature gradient as shown in Figure 3 in the direction of movement of the thermal head 1. The paper 3 is preheated so that it lasts. In addition,
In FIG. 3, the x-axis indicates the position of the paper in the direction of arrow a.
なお、ここで、第3図に示す温度勾配は、予熱
板5の形状、予熱板5自体の温度、用紙3の質や
厚さ、用紙3の繰り出し速度等によつて変るもの
であつて、これらの諸条件を考慮して、予熱板5
の形状や、予熱板5自体の温度が決められる。 Note that the temperature gradient shown in FIG. 3 varies depending on the shape of the preheating plate 5, the temperature of the preheating plate 5 itself, the quality and thickness of the paper 3, the feeding speed of the paper 3, etc. Considering these conditions, the preheating plate 5
The shape of the preheating plate 5 and the temperature of the preheating plate 5 itself are determined.
このように、用紙3の温度が熱ヘツド1の移動
方向に対して、次第に低くなるように予熱される
と、熱ヘツド1の蓄熱効果による熱ヘツド自体の
温度上昇分を、用紙の温度が補正するように作用
し、熱ヘツド1の移動位置にかかわらず、均一な
濃度の記録を高速で行うことができる。 In this way, when the paper 3 is preheated so that its temperature gradually decreases in the direction of movement of the thermal head 1, the paper temperature compensates for the increase in temperature of the thermal head itself due to the heat storage effect of the thermal head 1. Therefore, regardless of the moving position of the thermal head 1, uniform density recording can be performed at high speed.
なお、上記の実施例では、予熱板5の形状を変
えることによつて、用紙の幅方向に温度勾配をも
たせるようにしたものであるが、予熱板5を平板
とするとともに、電熱ヒータを複数個設けるなど
することにより、予熱板5自体の温度を矢印a方
向に勾配をもたせるようにしてもよい。 In the above embodiment, a temperature gradient is created in the width direction of the paper by changing the shape of the preheating plate 5, but the preheating plate 5 is made into a flat plate and a plurality of electric heaters are used. The temperature of the preheating plate 5 itself may be made to have a gradient in the direction of the arrow a by providing two or more.
また、ここでは熱転写記録を行う場合を例示し
たが、用紙が感熱紙であるサーマルプリンタ等に
も同様に適用できる。 Further, although the case where thermal transfer recording is performed is illustrated here, the present invention can be similarly applied to a thermal printer or the like in which the paper is thermal paper.
以上説明したように、本考案によれば、高速
で、かつ均一濃度の記録が行なえる感熱記録装置
が実現できる。 As described above, according to the present invention, it is possible to realize a thermal recording device that can perform high-speed recording with uniform density.
第1図は本考案に係る装置の一例を示す要部の
構成斜視図、第2図は第1図装置に使用されてい
る予熱板の構成図、第3図は用紙の予熱温度分布
を示す線図、第4図は予熱板に結合している電熱
ヒータの温度制御回路図である。
1……熱ヘツド、2……転写リボン、3……用
紙、4……プラテン、5……予熱板。
Figure 1 is a perspective view of the main parts of an example of the device according to the present invention, Figure 2 is a diagram of the configuration of a preheating plate used in the device shown in Figure 1, and Figure 3 shows the preheating temperature distribution of paper. FIG. 4 is a temperature control circuit diagram of an electric heater connected to a preheating plate. 1... Heat head, 2... Transfer ribbon, 3... Paper, 4... Platen, 5... Preheating plate.
Claims (1)
記録すべき用紙を予熱する予熱板を設け、前記
予熱板によつて、前記用紙を前記熱ヘツドの移
動方向に次第に温度が低くなるような勾配をも
つように予熱するようにした感熱記録装置。 (2) 予熱板として、用紙の搬送方向の幅が熱ヘツ
ドの移動方向に従つて次第に狭くなるようなほ
ぼ三角形状のものを用いた実用新案登録請求の
範囲第1項記載の感熱記録装置。[Scope of claims for utility model registration] (1) In a thermal recording device having a heat generating head,
A thermal recording device is provided with a preheating plate for preheating paper to be recorded, and the preheating plate preheats the paper so that the temperature of the paper gradually decreases in the direction of movement of the thermal head. (2) The thermal recording device according to claim 1, which uses a substantially triangular preheating plate whose width in the paper conveyance direction gradually narrows in the direction of movement of the thermal head.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18244181U JPS5886361U (en) | 1981-12-08 | 1981-12-08 | thermal recording device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18244181U JPS5886361U (en) | 1981-12-08 | 1981-12-08 | thermal recording device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5886361U JPS5886361U (en) | 1983-06-11 |
JPS6210136Y2 true JPS6210136Y2 (en) | 1987-03-09 |
Family
ID=29980808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18244181U Granted JPS5886361U (en) | 1981-12-08 | 1981-12-08 | thermal recording device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5886361U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1016413A (en) * | 1996-06-28 | 1998-01-20 | Dainippon Printing Co Ltd | Thermal transfer recording method |
-
1981
- 1981-12-08 JP JP18244181U patent/JPS5886361U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5886361U (en) | 1983-06-11 |
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