JPS6129559A - Driving device for printing in heat-transfer recording device - Google Patents
Driving device for printing in heat-transfer recording deviceInfo
- Publication number
- JPS6129559A JPS6129559A JP15057484A JP15057484A JPS6129559A JP S6129559 A JPS6129559 A JP S6129559A JP 15057484 A JP15057484 A JP 15057484A JP 15057484 A JP15057484 A JP 15057484A JP S6129559 A JPS6129559 A JP S6129559A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- power supply
- temperature
- voltage
- transfer recording
- 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
Landscapes
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は情報処理端末の入出力機器、特に熱転写記録装
置における印刷駆動装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an input/output device for an information processing terminal, and particularly to a print drive device in a thermal transfer recording device.
(従来技術)
従来のライン型ヘッドを使用した、熱転写記録装置にお
いて、印字品質面や、印字性能面でよシ向上させようと
している現在、使われる感熱ヘッドは240ドツト/イ
ンチ又はそれ以上の高密度化の傾向にアリ、又印刷スピ
ードもA4用紙で6〜7枚/分、印字周期が5〜6 m
s/ドツトライン前後と高速化の方向にある。(Prior art) At present, efforts are being made to improve the printing quality and printing performance of thermal transfer recording devices that use conventional line-type heads. The trend is toward density, and the printing speed is 6 to 7 pages/minute on A4 paper, and the printing cycle is 5 to 6 m.
The speed is increasing around the s/dot line.
(発明が解決しようとする問題点)
これに伴い、感熱ヘッドを駆動する電源の容量が増大し
、例えば、240ドツト/インチで感熱ヘッドの抵抗が
500Ω/トツド、又1ラインの全ドツト数が2432
(B4サイズ)を20V電圧を印加し、又印字デー−
ティは周期6ms、駆動幅1msとする時の駆動電源の
電流と電力は下記のごとくとなる。(Problems to be Solved by the Invention) Along with this, the capacity of the power supply that drives the thermal head has increased, and for example, at 240 dots/inch, the resistance of the thermal head is 500Ω/total, and the total number of dots in one line has increased. 2432
(B4 size), apply 20V voltage, and print data.
The current and power of the driving power supply when the tee has a period of 6 ms and a driving width of 1 ms are as follows.
Io=201500−2342−1/6=16(A)
−・−・−=−(1)Po=20X16 = 32
0 (W:] −・−・・・・・(2)但し
、(1) 、 (2)式は印字データが全黒ドツトの場
合である。Io=201500-2342-1/6=16(A)
−・−・−=−(1) Po=20X16 = 32
0 (W:] -... (2) However, equations (1) and (2) apply when the print data is all black dots.
又実際実用業務の中で印刷される黒ドツトの比率は、全
黒ドツトの場合に比べ30%前後である。Furthermore, the ratio of black dots printed in actual practical work is about 30% compared to the case of all black dots.
この時の駆動電源の電流と電力は下記のごとくとなる。The current and power of the drive power supply at this time are as follows.
Iシ=16・0.3=4.8 (A)
・・・・・・・・・(3)Pシ=20・4.8=96[
W] ・・・・・・・・・(4)故に9
6Wの定格でほぼ足シるのに印字品質の面、性能の面を
考慮し、黒率が多い時も保障する必要かう、320W前
後の容量になっていた。Ishi=16・0.3=4.8 (A)
・・・・・・・・・(3) Pshi=20・4.8=96[
W] ・・・・・・・・・(4) Therefore 9
Although the 6W rating would be almost too much, considering print quality and performance, the capacity was set at around 320W, which was necessary to ensure even when the black rate was high.
張合、事務機用として小型、軽量、低価格が望まれる中
で感熱ヘッドの低電力化と駆動電源の使用効率の向上に
よる低容量化、小型化、低価格化が問題となって来た。With the demand for compact, lightweight, and low-priced thermal heads for use in business machines, lower capacity, smaller size, and lower prices have become an issue by reducing the power consumption of thermal heads and improving the efficiency of use of the drive power source. .
本発明の目的は感熱ヘッドの駆動電源容量を大幅に低減
し、印字品質、印字性能を極カ落すことなく、効率の良
い、小型化、低価格の熱転写記録装置を提供することに
ある。An object of the present invention is to provide an efficient, compact, and low-cost thermal transfer recording device that significantly reduces the drive power capacity of a thermal head without significantly degrading printing quality or printing performance.
(問題点を解決するための手段)
本発明は熱転写記録装置の電源内部の放熱板の最大定格
温度を検出し、その温度検出によって出力コンデンサへ
の充電電流を抑制する電源4と、該電源の出力電圧の復
帰電圧の状態を検出し、その復帰電圧の検出に応じて印
刷周期を任意に可変せしめる印刷制御部1を有するもの
である。(Means for Solving the Problems) The present invention includes a power source 4 that detects the maximum rated temperature of a heat sink inside a power source of a thermal transfer recording device and suppresses charging current to an output capacitor by detecting the temperature; The apparatus includes a print control section 1 that detects the state of the return voltage of the output voltage and arbitrarily changes the printing cycle according to the detection of the return voltage.
(作 用)
電源内部の放熱板の温度を検出し定格温度を越えると、
電源の出力コンデンサへの充電電流値を低下させミ該コ
ンデンサへの充電時間を遅らせる。(Function) When the temperature of the heat sink inside the power supply is detected and exceeds the rated temperature,
Decrease the charging current value to the output capacitor of the power supply and delay the charging time to the capacitor.
一方印刷制御部lでは前記電源電圧を監視し、印刷直前
までに駆動電圧が印刷可能レベルに達していれば即時印
刷駆動動作を可能、とし、又該電圧が印刷可能レベルに
達してない時は、次の印刷駆動を一律一定の時間遅延さ
せ、印刷時の平均電力を落し電源内部の温度が定格値を
越えない様に考慮し、印刷動作を行なわしめる。On the other hand, the print control unit 1 monitors the power supply voltage, and if the drive voltage reaches a printable level immediately before printing, immediate printing drive operation is possible, and if the voltage has not reached the printable level, then , the next printing drive is uniformly delayed for a fixed period of time, the average power during printing is reduced, and the printing operation is performed while taking into account that the temperature inside the power supply does not exceed the rated value.
(実施例) 次に本発明の実施例を図面を参照して説明する。(Example) Next, embodiments of the present invention will be described with reference to the drawings.
本実施例には240ドツト/インチのライン型感熱ヘッ
ドを用い、全ドツト数は2432ドツ)(B4サイズ)
で、1ドツトラインの印刷は1216ドツトを各々2回
に分けて印刷するものである。In this example, a line type thermal head with 240 dots/inch was used, and the total number of dots was 2432 dots) (B4 size)
To print one dot line, 1216 dots are printed twice each.
又駆動電源4は実用レベルの黒ドツト率を満足させる容
量に設計されたものであシ、設定、定格容量を越えた黒
ドツト率の印刷デー−ティの場合に、該電源内部放熱板
温度を検出し許容温度を越えると、該電源の出力コンデ
ンサへの充電電流を任意の量減少させ、定格電圧値に達
する時間を遅延させ、該電源の熱破壊を防ぐ様考慮され
たものである。The drive power supply 4 is designed to have a capacity that satisfies the black dot rate at a practical level, and in the case of a printing date with a black dot rate exceeding the set and rated capacity, the temperature of the heat sink inside the power supply should be adjusted. When detected and the permissible temperature is exceeded, the charging current to the output capacitor of the power supply is reduced by an arbitrary amount to delay the time it takes to reach the rated voltage value, thereby preventing thermal breakdown of the power supply.
以上の条件での印刷動作を説明する。The printing operation under the above conditions will be explained.
第1図のブロック図を見ると、印刷制御部1は上位から
の印刷情報を受信すると、まず感熱ヘッド2に印刷デー
タをシリアルに格納する。その後、感熱ヘッド2へ印加
電力を供給する印刷駆動部3−に駆動信号を前記印刷制
御部1から送出すると、駆動電源4は印刷駆動部3を経
由して任意の時間tの間2回に分けて感熱ヘッドは通電
し1ドツトラインの印刷動作が完了する。Referring to the block diagram of FIG. 1, when the print control section 1 receives print information from a higher level, it first stores print data in the thermal head 2 serially. Thereafter, when the print control section 1 sends a drive signal to the print drive section 3- which supplies power to the thermal head 2, the drive power source 4 is transmitted twice during an arbitrary time period t via the print drive section 3. The thermal heads are energized separately and the printing operation for one dot line is completed.
第2図の波形A及びBが印刷駆動部3の出力電圧波形で
ある。又駆動電源4の出力コンデンサの端子電圧の印刷
時の充放電波形が波形Cである。Waveforms A and B in FIG. 2 are output voltage waveforms of the print drive unit 3. Further, the charging/discharging waveform of the terminal voltage of the output capacitor of the drive power source 4 at the time of printing is waveform C.
通常、黒ドツト、率が30チ以下で連続運転している場
合は駆動電源4の出力コンデンサの電圧は実線aの波形
となシ、正規の印刷周期Tよシ短い時間で、印刷可能電
圧レベルSまで復帰完了出来る為常時印刷周期Tで印刷
動作が運転継続されるものである。Normally, when continuous operation is performed at a black dot rate of 30 inches or less, the voltage of the output capacitor of the drive power supply 4 does not have the waveform of the solid line a, and the printable voltage level is reached in a shorter time than the regular printing cycle T. Since the return can be completed up to S, the printing operation continues at all times with the printing cycle T.
次に黒ドツト率が30%を越えた印刷°動作が連続して
継続され、駆動電源4の内部放熱板温度が許容温度の最
大値に達すると、自動的に該電源の出力コンデンサへの
充電時間が、以前の許容温度内で動作していた時間よシ
もΔTだけ遅延し、該電源内部放熱板の温度が許容領域
に下るまで継続する。Next, when the printing operation with a black dot rate exceeding 30% continues and the internal heat sink temperature of the drive power supply 4 reaches the maximum allowable temperature, the output capacitor of the power supply is automatically charged. The time is delayed by ΔT from the time it was previously operating within the permissible temperature range, and continues until the temperature of the power supply internal heat sink drops to the permissible range.
波形すで現わす。そうすると、印刷制御部1は、印刷後
時間T経過後、次の印刷動作開始直前に、前述駆動電源
の出力電圧が、印刷可能電圧レベルかどうかを検出し、
もしまだ該レベルに達していない場合は、次の印刷開始
時間を一律ΔTだけ遅延させた後、印刷動作を開始する
ものである。The waveform will already appear. Then, after the time T has elapsed after printing and immediately before starting the next printing operation, the print control unit 1 detects whether the output voltage of the drive power source is at a printable voltage level,
If the level has not yet been reached, the next printing start time is uniformly delayed by ΔT, and then the printing operation is started.
故に駆動電源4の定格容量オーバーの場合はT′の印刷
周期で連続運転されることになる。但し、T′で印刷す
る場合、周期1時の印刷濃度よシも若干淡くなるので、
駆動パルス幅を若干広めに補正してやる必要がある。Therefore, if the rated capacity of the drive power source 4 is exceeded, continuous operation will be performed at a printing cycle of T'. However, when printing at T', the printing density will be slightly lighter than that at cycle 1, so
It is necessary to correct the drive pulse width slightly wider.
尚、通常印刷の場合の黒ドツト率は、約30%前後であ
る為、はぼ性能を落すことはなく、又黒ドブト率が高い
場合も周期を遅延させることによって印刷動作を可能と
するものである。In addition, since the black dot rate in normal printing is around 30%, the printing performance is not degraded, and even when the black dot rate is high, the printing operation is made possible by delaying the cycle. It is.
(発明の効果)
以上の様に本発明によれば、従来に比べて70チ電源容
量を削減でき、しかも、黒ドツト率の高い印刷を行なう
ことができ、実用上印字品質、印字速度を極力そこなわ
ずに、従来に比べ低容量、低価格、小形化を実現できる
効果を有するものである。(Effects of the Invention) As described above, according to the present invention, the power supply capacity can be reduced by 70 chips compared to the conventional method, and printing with a high black dot rate can be performed, and printing quality and printing speed can be minimized in practical terms. This has the effect of realizing lower capacity, lower cost, and smaller size than conventional devices without any disadvantages.
第1図は本発明の一実施例を示す印刷制御系ブロック図
、第2図は印刷制御系の各部の電圧波形図である。
1・・・印刷制御部、2・・・感熱ヘッド、3・・・印
刷駆動部、4・・・駆動電源。
°にノ
第2図FIG. 1 is a block diagram of a print control system showing one embodiment of the present invention, and FIG. 2 is a voltage waveform diagram of each part of the print control system. DESCRIPTION OF SYMBOLS 1... Print control section, 2... Thermal head, 3... Print drive section, 4... Drive power supply. ° ni no Figure 2
Claims (1)
度を検出し、その温度検出によって出力コンデンサへの
充電電流を抑制する電源と、該電源の出力電圧の復帰電
圧の状態を検出し、その復帰電圧の検出に応じて印刷周
期を任意に可変せしめる印刷制御部とを有することを特
徴とする熱転写記録装置における印刷駆動装置。(1) Detecting the maximum rated temperature of the heat sink inside the power source of the thermal transfer recording device, and detecting the state of the power source that suppresses the charging current to the output capacitor and the return voltage of the output voltage of the power source by detecting the temperature; 1. A print drive device for a thermal transfer recording device, comprising a print control section that arbitrarily changes a print cycle in accordance with detection of the return voltage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15057484A JPS6129559A (en) | 1984-07-20 | 1984-07-20 | Driving device for printing in heat-transfer recording device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15057484A JPS6129559A (en) | 1984-07-20 | 1984-07-20 | Driving device for printing in heat-transfer recording device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6129559A true JPS6129559A (en) | 1986-02-10 |
Family
ID=15499859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15057484A Pending JPS6129559A (en) | 1984-07-20 | 1984-07-20 | Driving device for printing in heat-transfer recording device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6129559A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4877344A (en) * | 1987-04-17 | 1989-10-31 | Hitachi Koki Company, Limited | Impact printer temperature control device |
-
1984
- 1984-07-20 JP JP15057484A patent/JPS6129559A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4877344A (en) * | 1987-04-17 | 1989-10-31 | Hitachi Koki Company, Limited | Impact printer temperature control device |
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