JPS58201681A - Thermal head control device - Google Patents
Thermal head control deviceInfo
- Publication number
- JPS58201681A JPS58201681A JP8605282A JP8605282A JPS58201681A JP S58201681 A JPS58201681 A JP S58201681A JP 8605282 A JP8605282 A JP 8605282A JP 8605282 A JP8605282 A JP 8605282A JP S58201681 A JPS58201681 A JP S58201681A
- Authority
- JP
- Japan
- Prior art keywords
- temperature sensor
- thermal head
- heating element
- control
- driver
- 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
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
- B41J2/32—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 using thermal heads
- B41J2/35—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 using thermal heads providing current or voltage to the thermal head
- B41J2/355—Control circuits for heating-element selection
- B41J2/36—Print density control
- B41J2/365—Print density control by compensation for variation in temperature
-
- 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
- B41J2/32—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 using thermal heads
- B41J2/35—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 using thermal heads providing current or voltage to the thermal head
- B41J2/355—Control circuits for heating-element selection
- B41J2/36—Print density control
Abstract
Description
【発明の詳細な説明】
この発明は、サーマルヘッド制御装置に関し、特にシリ
アル印字サーマルヘッドの温度制御装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermal head control device, and more particularly to a temperature control device for a serial printing thermal head.
従来この種の装置として第１図に示すものがあった。図
において、（１）はシリアル印字サーマルヘッド、（２
；はサーマルヘッド（１）の基板に搭載されている発熱
体、（３）は発熱体（２）に通電するドライバ。A conventional device of this type is shown in FIG. In the figure, (1) is a serial printing thermal head, (2)
; is a heating element mounted on the board of the thermal head (1), and (3) is a driver that energizes the heating element (2).
（４）は発熱体（２）への通電時間、印加電圧を記録デ
ータのパターンに応じて制御する制御回路である。(4) is a control circuit that controls the energization time and applied voltage to the heating element (2) according to the pattern of recording data.
次に動作について説明する。Next, the operation will be explained.
印字等の記録は制御回路（４）からのデータに基づき、
ドライバ（３１によって発熱体（２１に電流を流し、発
熱体（２）を発熱させることによって行なう。記録濃度
は、発熱体（１）への通電時間又は印加電圧によって調
整できる。したがって記録濃度を均一にするために、デ
ータのパターンに応じて通電時間又のように栴成されて
おり、記録濃度を均一にするための制御を、データパタ
ーンを認識しその情報をもとに印加電圧又は通電時間を
決定して行なっているので、制御が複雑になってしまう
という欠点かあった。またその制御がオー１ンルー１制
御であるため、印字品質に最も影醤を与えるヘッド自体
の状態を検出してフィードバック制御することができす
、その結果印字品質があまりよくないという欠点もあっ
た。Records such as printing are based on data from the control circuit (4).
This is done by passing current through the heating element (21) using the driver (31) and causing the heating element (2) to generate heat. The recording density can be adjusted by the time of energization to the heating element (1) or the applied voltage. Therefore, the recording density can be made uniform. In order to achieve this, the applied voltage or current application time is set according to the data pattern, and the control to make the recording density uniform is performed by recognizing the data pattern and adjusting the applied voltage or current application time based on that information. This has the drawback of making the control complicated.Also, since the control is an all-one control, it is difficult to detect the condition of the head itself, which has the greatest effect on print quality. However, as a result, the print quality was not very good.
この発明は上記のような従来のものの欠点を除去するた
めになされたもので、ヤーマルヘッドの基板にドライバ
及び温度センサを搭載し、発熱体への通電時間、印加電
圧を記録データパターン及び温度センサの出力に応じて
制御することにより、制御の簡素化を図るとともに、印
字品質を大きく向上させるようにしたコンパクトなサー
マルヘッド制御装置を提供することを目的としている。This invention was made in order to eliminate the drawbacks of the conventional ones as described above. A driver and a temperature sensor are mounted on the substrate of the thermal head, and the time of energization to the heating element and the applied voltage are recorded and the data pattern and temperature sensor are recorded. It is an object of the present invention to provide a compact thermal head control device that simplifies control and greatly improves printing quality by controlling according to output.
以下この発明の一実謡 を図について説明する。A practical example of this invention will be explained below with reference to the drawings.
第２図は本発明の一実施例によるサーマルヘッド制御装
置を示す。図において、第１図と同一符号は同図と同一
のものを示し、（５）は発熱体（２）の温度を検出する
温度センサ、（６）は発熱体（２）、ドライバ（３）及
び温度センサ（５）を同一基板（図示せず）に搭載して
なるシリアル印字サーマルヘッド、（７）は発熱体（２
）への通電を制御する制御回路であり、該回路（７）は
通電時間又は印加電圧を記録データパターン及び温度セ
ンサ（５）の出力に応じて制御する。FIG. 2 shows a thermal head control device according to an embodiment of the present invention. In the figure, the same reference numerals as in Fig. 1 indicate the same parts as in the same figure, (5) is a temperature sensor that detects the temperature of the heating element (2), (6) is the heating element (2), the driver (3) and a temperature sensor (5) mounted on the same board (not shown); (7) is a heating element (2);
), and the circuit (7) controls the energization time or applied voltage according to the recording data pattern and the output of the temperature sensor (5).
次に作用効果について説明する。Next, the effects will be explained.
印字等の記録は制御回路（７）からのテークに応じて発
熱体（２）に通電し、発熱させることにより行なう。こ
の場合印字品質はヘッド（６）自体の温度とその周囲温
度により影響を受け、特にヘッド（６）をその定格付近
で使用する場合にはその影蕃が太きい。Recording such as printing is performed by energizing the heating element (2) to generate heat in accordance with the output from the control circuit (7). In this case, print quality is affected by the temperature of the head (6) itself and its surrounding temperature, and this influence is particularly severe when the head (6) is used near its rated temperature.
したかってヘッド（６）に温度センサ（５）を搭載し、
制御回路（７）において、記録データパターンに応じて
発熱体パ２）への通電時間又は印加電圧を決定するとと
もＩこ、それを温度センサ（５）の出力に応じてフィー
ドバック制御することにより、記録濃度を均一にするこ
とかできる。Therefore, a temperature sensor (5) is mounted on the head (6),
In the control circuit (7), the energization time or applied voltage to the heating element 2) is determined according to the recorded data pattern, and this is feedback-controlled according to the output of the temperature sensor (5). It is possible to make the recording density uniform.
また発熱体１２）、ドライバ（３）及び温度センサ（５
）を同一基板上に搭載したことにより、回路の規模を小
さくすることができ、装置の小型化及び制御の簡素化が
図れる。Also, a heating element 12), a driver (3) and a temperature sensor (5)
) on the same substrate, the scale of the circuit can be reduced, making it possible to downsize the device and simplify control.
なおこの発明は上記実施例に限定されるものではなく、
発熱体への通電時間と印加電圧の双方を制御するように
してもよく、特にバッテリ使用のポータプルな装置にお
いて印加電圧の増減範囲が限られるような場合にはその
不足分を通電時間を変化させることによって補うことが
でき、より広範な制御が可能となる。Note that this invention is not limited to the above embodiments,
Both the energization time and the applied voltage to the heating element may be controlled, and especially when the range of increase/decrease in the applied voltage is limited in portable devices that use batteries, the energization time may be changed to compensate for the shortfall. This can be supplemented by providing more extensive control.
以上のように本発明に係るサーマルヘッド制御装置によ
れば、サーマルヘッド基板にドライバと温度センサとを
搭載し、発熱体への通電時間、印加電圧を記録データパ
ターン及び温度センサの出力に応じて制御するようにし
たので、印字品質を大きく向上できるとともに、制御を
簡素化でき、さらには装置全体がコンパクトになるとい
う効果があり％特に電源電圧の限られた機器においてそ
の効果は大きいものである。As described above, according to the thermal head control device according to the present invention, the driver and the temperature sensor are mounted on the thermal head substrate, and the energization time and applied voltage to the heating element are controlled according to the recorded data pattern and the output of the temperature sensor. This has the effect of greatly improving print quality, simplifying control, and making the entire device more compact.%This is particularly effective for equipment with limited power supply voltage. .
第１図は従来のサーマルヘッド制御装置の構成図、第２
図は本発明の一実施例によるサーマルヘッド制御装置の
構成図である。
（２）・・・発熱体、（３）・・・ドライバ、（５）・
・・温度センサ、（６）・・・サーマルヘッド％（７）
・・・制御回路。
なお図中、同一符号は同−又は相当部分を示す。
代理人 葛 野 信 −第１図Figure 1 is a configuration diagram of a conventional thermal head control device;
The figure is a configuration diagram of a thermal head control device according to an embodiment of the present invention. (2)... Heating element, (3)... Driver, (5)...
...Temperature sensor, (6) ...Thermal head% (7)
...Control circuit. In the drawings, the same reference numerals indicate the same or equivalent parts. Agent Shin Kuzuno - Figure 1
Claims (1)
発熱体の温度を検出する温度センサとを同一基板に搭載
してなるサーマルヘッドと、上記発熱体への通電時間と
印加電圧のいずれか一方あるいは双方を記録データパタ
ーン及び上記温度センサの出力に応じて制御する制御回
路とを備えたことを特徴とするサーマルヘッド制御装置
。(1) A thermal head comprising a heating element, a driver for energizing the heating element, and a temperature sensor for detecting the temperature of the heating element, mounted on the same substrate, and either the time for energizing the heating element or the applied voltage. A thermal head control device comprising: a control circuit that controls one or both of them according to a print data pattern and an output of the temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8605282A JPS58201681A (en) | 1982-05-19 | 1982-05-19 | Thermal head control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8605282A JPS58201681A (en) | 1982-05-19 | 1982-05-19 | Thermal head control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58201681A true JPS58201681A (en) | 1983-11-24 |
Family
ID=13875909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8605282A Pending JPS58201681A (en) | 1982-05-19 | 1982-05-19 | Thermal head control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58201681A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62101468A (en) * | 1985-10-28 | 1987-05-11 | Matsushita Graphic Commun Syst Inc | Temperature information correcting circuit for thermal recorder |
| US4724336A (en) * | 1985-09-19 | 1988-02-09 | Tokyo Electric Co., Ltd. | Power circuit for thermal head |
| US5059044A (en) * | 1988-06-15 | 1991-10-22 | Tokyo Electric Co., Ltd. | Thermal printer that detects rate of temperature increase |
| US5181048A (en) * | 1990-08-31 | 1993-01-19 | Samsung Electronics Co., Ltd. | Preheated thermal print apparatus for video printer |
| US5223853A (en) * | 1992-02-24 | 1993-06-29 | Xerox Corporation | Electronic spot size control in a thermal ink jet printer |
| US5623297A (en) * | 1993-07-07 | 1997-04-22 | Intermec Corporation | Method and apparatus for controlling a thermal printhead |
| US6067100A (en) * | 1989-09-18 | 2000-05-23 | Canon Kabushiki Kaisha | Ink-jet recording apparatus and temperature control method therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS529442A (en) * | 1975-07-11 | 1977-01-25 | Matsushita Electric Ind Co Ltd | Thermal head printing dot control system |
-
1982
- 1982-05-19 JP JP8605282A patent/JPS58201681A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS529442A (en) * | 1975-07-11 | 1977-01-25 | Matsushita Electric Ind Co Ltd | Thermal head printing dot control system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4724336A (en) * | 1985-09-19 | 1988-02-09 | Tokyo Electric Co., Ltd. | Power circuit for thermal head |
| JPS62101468A (en) * | 1985-10-28 | 1987-05-11 | Matsushita Graphic Commun Syst Inc | Temperature information correcting circuit for thermal recorder |
| JPH0630897B2 (en) * | 1985-10-28 | 1994-04-27 | 松下電送株式会社 | Temperature information correction circuit for thermal recorder |
| US5059044A (en) * | 1988-06-15 | 1991-10-22 | Tokyo Electric Co., Ltd. | Thermal printer that detects rate of temperature increase |
| US6067100A (en) * | 1989-09-18 | 2000-05-23 | Canon Kabushiki Kaisha | Ink-jet recording apparatus and temperature control method therefor |
| US5181048A (en) * | 1990-08-31 | 1993-01-19 | Samsung Electronics Co., Ltd. | Preheated thermal print apparatus for video printer |
| US5223853A (en) * | 1992-02-24 | 1993-06-29 | Xerox Corporation | Electronic spot size control in a thermal ink jet printer |
| US5623297A (en) * | 1993-07-07 | 1997-04-22 | Intermec Corporation | Method and apparatus for controlling a thermal printhead |
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