JPS63312861A - Thermal printer - Google Patents
Thermal printerInfo
- Publication number
- JPS63312861A JPS63312861A JP62149568A JP14956887A JPS63312861A JP S63312861 A JPS63312861 A JP S63312861A JP 62149568 A JP62149568 A JP 62149568A JP 14956887 A JP14956887 A JP 14956887A JP S63312861 A JPS63312861 A JP S63312861A
- Authority
- JP
- Japan
- Prior art keywords
- resistance value
- heat generating
- heating resistor
- generating resistor
- resistor
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明はサーマルプリンタ、特にそのヘッド駆動電圧
の調整に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal printer, and particularly to adjustment of head drive voltage thereof.
［従来の技術］
第２図に従来のサーマルプリンタのヘッドの構成を示す
、サーマルヘッド３には発熱抵抗体１が一列に設けられ
ている０発熱抵抗体１には駆動回路２が接続されており
、制御回路（図示せず）はこの駆動回路２を制御してＴ
Ｌ電源装置からの電圧を発熱抵抗体１に与える０発熱抵
抗体１の発熱により記録紙に印字・印画が行なわれる。[Prior Art] Fig. 2 shows the configuration of a head of a conventional thermal printer.A thermal head 3 has heating resistors 1 arranged in a row.A drive circuit 2 is connected to the heating resistor 1. A control circuit (not shown) controls this drive circuit 2 to
Printing is performed on recording paper by the heat generated by the zero-heating resistor 1, which applies voltage from the L power supply to the heating resistor 1.
このプリンタを製造する際には、発熱抵抗体１に与える
電圧を所定の値に調整する必要がある。When manufacturing this printer, it is necessary to adjust the voltage applied to the heating resistor 1 to a predetermined value.
従来、この調整は次のようにして行っていた。まず、作
業者はサーマルヘッド３の筐体に記載されている発熱抵
抗体１の標準抵抗値を読み取る。この標準抵抗値に基づ
いて駆動電圧を決定し、可変抵抗５によって電源装置４
の出力電圧を調整する。Conventionally, this adjustment was performed as follows. First, the operator reads the standard resistance value of the heating resistor 1 written on the casing of the thermal head 3. The drive voltage is determined based on this standard resistance value, and the variable resistor 5
Adjust the output voltage.
［発明が解決しようとする問題点］
従来のサーマルプリンタの駆１７１電圧調整には次のよ
うな問題点があった０発明抵抗体１の抵抗値にはパラつ
きがあり、したがって標準抵抗値はサーマルヘッドごと
に同一ではない、このため、サーマルヘッド３の取り付
は又は交換の際には、その都度、可変抵抗５によって電
源装置・１の出力電圧を調怒しなければならなかった。[Problems to be Solved by the Invention] Conventional thermal printer driver 171 voltage adjustment has the following problems.The resistance value of the invention resistor 1 varies, so the standard resistance value is The voltage is not the same for each thermal head, and therefore, each time the thermal head 3 is installed or replaced, the output voltage of the power supply device 1 must be adjusted using the variable resistor 5.
この発明は上記の問題点を解決して、自動的に駆動電圧
調整を行うことのできるサーマルプリン多を提供するこ
とを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a thermal printer capable of automatically adjusting drive voltage.
［問題点を解決するための手段］
この発明に係るサーマルプリンタは、発熱抵抗体の標準
抵抗値と等しい抵抗値を有する擬似発熱抵抗体を備えて
おり、この擬似発熱抵抗体の抵抗値を抵抗値測定手段で
測定するとともに、測定した抵抗値に応じて可変電源手
段の出力電圧を可変するようにしている。[Means for Solving the Problems] The thermal printer according to the present invention includes a pseudo heat generating resistor having a resistance value equal to the standard resistance value of the heat generating resistor, and the resistance value of the pseudo heat generating resistor is The resistance value is measured by the value measuring means, and the output voltage of the variable power supply means is varied in accordance with the measured resistance value.
［作用］
可変電源手段の出力電圧値は、抵抗値測定手段によって
測定された擬似発熱抵抗体の抵抗値（すなわち標準抵抗
値）に応じて可変される。[Function] The output voltage value of the variable power supply means is varied according to the resistance value (ie, standard resistance value) of the pseudo heating resistor measured by the resistance value measuring means.
［実施例］
第１図にこの発明の一実施例によるサーマルプリンタの
構成を示す、サーマルヘッド３には発熱抵抗体１が一列
に設けられている０発熱抵抗体１には駆動回！８２が接
続されており、制御回路（図示せず）は、この駆！／Ｉ
＠路２をルＩ御して電源装置４からの電圧を発熱抵抗体
１に与える０発熱抵抗体１の発熱により記録紙に印字・
印画が行なわれる。[Embodiment] Fig. 1 shows the configuration of a thermal printer according to an embodiment of the present invention.A thermal head 3 is provided with heating resistors 1 in a row. 82 is connected, and a control circuit (not shown) is connected to this drive! /I
The voltage from the power supply device 4 is applied to the heating resistor 1 by controlling the @ path 2. The heat generated by the heating resistor 1 prints on the recording paper.
Printing is done.
′す゛−マルヘッド３には、発熱抵抗体１と並んで擬似
発熱抵抗体７が設けられている。擬似発熱抵抗体７は駆
動回路２に接続されず、抵抗値測定手段である抵抗値測
定回路６に接続されている。擬似発熱抵抗体７の抵抗値
はサーマルヘッド３の製造時に、発熱抵抗体１の標準抵
抗値と等しくなるように製造されている。抵抗値測定回
路６は測定した擬似発熱体７の抵抗値に基づき、可変電
源手段である＠源装置４の出力を変化させる。これによ
り、電源装３４から発熱抵抗体１に与えられる駆動電圧
は、発熱抵抗体１の標準抵抗値に適合した適正な電圧に
調整される。A pseudo heat generating resistor 7 is provided in the 'summar head 3 in parallel with the heat generating resistor 1. The pseudo heating resistor 7 is not connected to the drive circuit 2, but is connected to a resistance value measuring circuit 6 which is a resistance value measuring means. The resistance value of the pseudo heating resistor 7 is manufactured to be equal to the standard resistance value of the heating resistor 1 when the thermal head 3 is manufactured. The resistance value measuring circuit 6 changes the output of the @source device 4, which is a variable power source means, based on the measured resistance value of the pseudo heating element 7. Thereby, the drive voltage applied to the heat generating resistor 1 from the power supply unit 34 is adjusted to an appropriate voltage that matches the standard resistance value of the heat generating resistor 1.
なお、サーマルヘッド３の製造時において、発熱抵抗体
１に隣接して擬似発熱抵抗体７を設けることは製造上容
易である。擬似発熱抵抗体７としては、通常の抵抗等を
用いてもよいが、発熱抵抗体１と同じものを用いる方が
製作上都合がよい。Incidentally, when manufacturing the thermal head 3, it is easy to provide the pseudo heating resistor 7 adjacent to the heating resistor 1. Although a normal resistor or the like may be used as the pseudo heat generating resistor 7, it is more convenient to use the same resistor as the heat generating resistor 1 in terms of manufacturing.
［発明の効果］
この発明に係るサーマルプリンタは、擬似発熱抵抗体を
設け、この抵抗値に基づいて駆動電圧を可変するように
している。したがって、サーマルヘッドの駆動電圧を自
動的に調整することができる。すなわち、サーマルヘッ
ド、または電源装置の取り付け、交換作業の簡単なサー
マルプリンタを提供することができる。[Effects of the Invention] The thermal printer according to the present invention is provided with a pseudo heating resistor, and the driving voltage is varied based on the resistance value of the pseudo heating resistor. Therefore, the driving voltage of the thermal head can be automatically adjusted. That is, it is possible to provide a thermal printer in which the thermal head or power supply device can be easily installed and replaced.
第１図はこの発明の一実施例によるサーマルプリンタの
構成を示す図、第２図は従来のサーマルプリンタの構成
を示す図である。
１は発熱抵抗体、３はサーマルヘッド、４は電源装置、
６は抵抗値測定回路、７は擬似発熱抵抗体である。
なお、各図中同一符号は同−又は相当部分を示す。FIG. 1 is a diagram showing the configuration of a thermal printer according to an embodiment of the present invention, and FIG. 2 is a diagram showing the configuration of a conventional thermal printer. 1 is a heating resistor, 3 is a thermal head, 4 is a power supply device,
6 is a resistance value measuring circuit, and 7 is a pseudo heating resistor. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (2)
の標準抵抗値と等しい抵抗値を有する擬似発熱抵抗体、 擬似発熱抵抗体の抵抗値を測定する抵抗値測定手段、 抵抗値測定手段からの出力に応じて発熱抵抗体に与える
電圧を変える可変電源手段、 を備えたことを特徴とするサーマルプリンタ。(1) A heating resistor provided in the print head, a pseudo heating resistor having a resistance value equal to the standard resistance value of the heating resistor, a resistance value measuring means for measuring the resistance value of the pseudo heating resistor, and a resistance value measuring means A thermal printer characterized by comprising: variable power supply means for changing the voltage applied to the heating resistor according to the output from the heating resistor.
特徴とする特許請求の範囲第１項記載のサーマルプリン
タ。(2) The thermal printer according to claim 1, wherein the heating resistors are arranged in a line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62149568A JPS63312861A (en) | 1987-06-16 | 1987-06-16 | Thermal printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62149568A JPS63312861A (en) | 1987-06-16 | 1987-06-16 | Thermal printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63312861A true JPS63312861A (en) | 1988-12-21 |
Family
ID=15478031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62149568A Pending JPS63312861A (en) | 1987-06-16 | 1987-06-16 | Thermal printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63312861A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0641656A2 (en) * | 1993-09-08 | 1995-03-08 | Canon Kabushiki Kaisha | Ink jet printer |
-
1987
- 1987-06-16 JP JP62149568A patent/JPS63312861A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0641656A2 (en) * | 1993-09-08 | 1995-03-08 | Canon Kabushiki Kaisha | Ink jet printer |
| EP0641656A3 (en) * | 1993-09-08 | 1996-01-24 | Canon Kk | Ink jet printer. |
| US5943070A (en) * | 1993-09-08 | 1999-08-24 | Canon Kabushiki Kaisha | Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head |
| CN1061000C (en) * | 1993-09-08 | 2001-01-24 | 佳能株式会社 | Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of...... |
| US6257695B1 (en) | 1993-09-08 | 2001-07-10 | Canon Kabushiki Kaisha | Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving record head |
| US6471339B1 (en) | 1993-09-08 | 2002-10-29 | Canon Kabushiki Kaisha | Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head |
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