JPS6076358A - Thermal printer device - Google Patents
Thermal printer deviceInfo
- Publication number
- JPS6076358A JPS6076358A JP18379983A JP18379983A JPS6076358A JP S6076358 A JPS6076358 A JP S6076358A JP 18379983 A JP18379983 A JP 18379983A JP 18379983 A JP18379983 A JP 18379983A JP S6076358 A JPS6076358 A JP S6076358A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- printer device
- print head
- thermal printer
- printing
- 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
-
- 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
Landscapes
- Electronic Switches (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、サーマルプリンタ装置に関し、特に、サーマ
ルプリンタ装置の温度制御に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermal printer device, and particularly to temperature control of a thermal printer device.
この種のサーマルプリンタ装置は、周囲温度によりその
印字濃度が変化するために、何らかの温度制御を行なう
ことが広く行なわれており、周囲温度に応じて印字ヘッ
ドの駆動電圧を変化させる １−
か、あるいは駆動パルス幅を変化させる等の方法が採ら
れている。この場合、温度検出をどのように行なうかが
問題となるが、従来においては印字ヘッド上、あるいは
装置筺体内のいずれかに１つの温度検出素子を持ち、温
度制御を行なっていた。Since the print density of this type of thermal printer device changes depending on the ambient temperature, some kind of temperature control is widely practiced, and the driving voltage of the print head is changed depending on the ambient temperature. Alternatively, methods such as changing the drive pulse width have been adopted. In this case, the problem is how to perform temperature detection, and conventionally, one temperature detection element is provided either on the print head or inside the device housing to perform temperature control.
しかしながら、第１図に同一の印字一度を狗るのに必要
な印字エネルギーと周囲温度、印字時間の関係の一例を
示すように、印字時間が長くなると、印字ヘッドへの蓄
熱にょ９必要な印字エネルギーが減少するために、筺体
内の温度検出にょシ制御を行なう場合には、印字時間が
長くなると印字ヘッド自体の温度上昇により、匣体内の
温度変化がなくとも印字濃度が譲〈なシ、また印字ヘッ
ド上で温度検出を行なう場合には、印字用紙あるいはプ
ラテン面の温度と、印字ヘッドの温度の差によシ、印字
ヘッドの温度が同一の場合にも、周ｔｍｉｔｉ度により
印字濃度が変化し、均一な印字ｍ−を憎るのが困難であ
った。However, as shown in Figure 1, which shows an example of the relationship between the printing energy required to perform the same printing once, the ambient temperature, and the printing time, as the printing time becomes longer, the amount of heat accumulated in the print head increases. Due to the decrease in energy, when controlling the temperature detection inside the housing, if the printing time becomes longer, the temperature of the print head itself will increase, so the print density will not be compromised even if there is no temperature change inside the housing. Furthermore, when temperature is detected on the print head, the print density may vary due to the difference between the temperature of the print paper or platen surface and the temperature of the print head. Variable and uniform printing was difficult to obtain.
本発明は従来の技術に内在する上記欠点を除去する為に
なされたものであり、従って本発明の自 ２−
的は、印字ヘッド上及びプリンタ装置筐体内に複数の温
度検出素子を持つことにより、均一な印字濃度が得られ
る新規なサーマルプリンタ装置を提供することにある。The present invention has been made in order to eliminate the above-mentioned disadvantages inherent in the prior art, and therefore, the present invention has an object: The object of the present invention is to provide a new thermal printer device that can obtain uniform print density.
上記目的を達成する為に、本発明に係るサーマルプリン
タ装置は、印字ヘッド上の印字ヘッドの温度を検出する
温度検出素子と、プリンタ装置筺体内のｍ度を検出する
少なくとも１つの湛度検出幽子と、前記複数の温度検出
素子の出力を各々独立に一定の増１一度て増幅後に加算
する加算回路と、前記加算回路の出力に応じて前記印字
ヘッドに印加される電＠電圧を変化させる電源制御回路
とを具備して構成される。In order to achieve the above object, a thermal printer device according to the present invention includes a temperature detection element on a print head that detects the temperature of the print head, and at least one immersion detection element that detects m degrees inside the printer device housing. an adder circuit that amplifies the outputs of the plurality of temperature detecting elements each independently and adds them after amplifying them once, and changes the voltage applied to the print head in accordance with the output of the adder circuit. and a power supply control circuit.
本発明においては、印字ヘッド上及びプリンタ装ｆＩｔ
Ｐｊｉ体内に上記の如く複数の温度検出素子を持ち、各
々の出力信吟に一定の重み付けをした後に加算し、その
結果に応じて印字ヘッド駆動電圧を変化させることによ
り、印字ヘッドの蓄熱効果、あるいは匣体内温度変化に
対して細かい温度制御が可能となる。In the present invention, on the print head and on the printer equipment fIt.
By having multiple temperature detection elements in the Pji body as described above, adding a certain weight to each output signal, and changing the print head drive voltage according to the result, the heat storage effect of the print head, Alternatively, fine temperature control is possible with respect to temperature changes inside the casing.
次に本発明をその好ましい一実施例について図面を参照
しながら具体的に説明する。Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.
第２図は本発明によるサーマルプリンタ装置の一実施例
を示すブロック構成図である。FIG. 2 is a block diagram showing an embodiment of the thermal printer device according to the present invention.
第２図を参照すると、本発明によるサーマルプリンタ装
置の一実施例は、印字ヘッド上の温度検出素子１と、プ
リンタ装置筐体内の温度検出素子２と、印字ヘッド上の
湿度検出素子１の出力を積分する積分器３と、積分器３
の出力を増幅する増幅器４と、温度検出素子２の出力を
増幅する増幅器５と、増幅器４．５の出力を加算する加
算器６と、加算器６からの入力電圧に比例した印字ヘッ
ド駆動電圧を出力する′＃Ｌ源制御回路７と、サーマル
プリンタ装置全体の制御を行なう制御回路８と、印字ヘ
ッド９とを含む。ここで印字ヘッド上の温度検出素子１
及びプリンタ装置筐体内の温度検出素子２は、例えば、
その出力電圧が負の温度係数を持つものである。Referring to FIG. 2, one embodiment of the thermal printer device according to the present invention includes a temperature sensing element 1 on the print head, a temperature sensing element 2 in the printer housing, and an output of the humidity sensing element 1 on the print head. Integrator 3 that integrates
an amplifier 4 for amplifying the output of the temperature sensing element 2, an amplifier 5 for amplifying the output of the temperature sensing element 2, an adder 6 for summing the outputs of the amplifier 4.5, and a print head drive voltage proportional to the input voltage from the adder 6. The thermal printer includes a '#L source control circuit 7 that outputs , a control circuit 8 that controls the entire thermal printer device, and a print head 9 . Here, temperature detection element 1 on the print head
And the temperature detection element 2 inside the printer device housing is, for example,
Its output voltage has a negative temperature coefficient.
次に、第２図に示す一実施例の動作を説明する。Next, the operation of the embodiment shown in FIG. 2 will be explained.
第３図に、第２図に示す実施例におけるプリンタ装置筐
体内温度及び印字ヘッド温度と、印字ヘッド駆動電圧の
関係上水す。第３図よシわかるように、印字ヘッド駆動
電圧は、印字ヘッドの温度及びプリンタ装置は体内温度
の両刀により変化し、温度上昇に対して印字ヘッド駆動
電圧は減少し、印字エネルギーが低下する。例えば、動
作開始時に匣体内温度、印字ヘッド温度ともにＴＯでこ
の時の印字ヘッド駆動電圧り、■０であるが、印字開始
後印字ヘッド９への蓄熱により印字ヘッド９の温度がＴ
】に上昇すると、印字ヘッド９上の温度検出素子１の出
力電圧が温度Ｔｌに対応して減少するために、加算器６
から電源制御回路７に加えられる電圧も印字ヘッド９上
の温度検出素子１の出力減少に応じた分だけ減少し、そ
の結果、印字ヘッド駆動電圧は■ｌに減少して、印字濃
度を一定に保つ。FIG. 3 shows the relationship between the temperature inside the printer housing, the print head temperature, and the print head drive voltage in the embodiment shown in FIG. As can be seen from FIG. 3, the print head driving voltage changes depending on the temperature of the print head and the internal temperature of the printer device, and as the temperature rises, the print head driving voltage decreases and the printing energy decreases. For example, at the start of operation, both the temperature inside the box and the print head temperature are TO, and the print head drive voltage at this time is 0, but after the start of printing, the temperature of the print head 9 decreases to T due to heat accumulation in the print head 9.
], the output voltage of the temperature detecting element 1 on the print head 9 decreases in accordance with the temperature Tl.
The voltage applied to the power supply control circuit 7 also decreases by the amount corresponding to the decrease in the output of the temperature detection element 1 on the print head 9, and as a result, the print head drive voltage decreases to ■l, keeping the print density constant. keep.
また、動作開始時に匣体内温度、印字ヘッド温度ともに
温度Ｔ１の状態を考えてみると、この時には＾ＩＪ記の
筐体内温変心、印字ヘッド温度Ｉｌｌ １の状態に比し
て必要な印字エネルギーは更に減少する。Also, if we consider a state in which both the temperature inside the casing and the print head temperature are T1 at the start of operation, the required printing energy is Further decrease.
この時には、印字ヘッド９上の温度検出素子１及び筐体
内温度検出素子２の出力電圧が共に温度Ｔｌに対応して
減少し、それらが増幅された後の和である加算器６の出
力電圧は前記の場合よりさらに減少し、その結果、印字
ヘッド駆動電圧はさらに下がって■となる。At this time, the output voltages of the temperature detection element 1 on the print head 9 and the temperature detection element 2 inside the housing both decrease corresponding to the temperature Tl, and the output voltage of the adder 6, which is the sum of these amplified values, is This decreases further than in the case described above, and as a result, the print head drive voltage further decreases to ■.
第２図の実施例における積分器３は、印字ヘッドを駆動
した時の瞬時的な温度上昇を平準化し、印字ヘッドの平
均温度により制御を行なうためのものである。The integrator 3 in the embodiment shown in FIG. 2 is used to level out the instantaneous temperature rise when the print head is driven, and to perform control based on the average temperature of the print head.
また、第３図に示すプリンタ装置筐体内温度及び印字ヘ
ッド温度に対する印字ヘッド駆動電圧の関係において、
プリンタ装置筐体内温度の変動、印字ヘッド温度の変動
各々に対する印字ヘッド駆動電圧の変化特性は、増幅器
４．５の増幅度を変化させることで各々独立に所望の特
性を得ることがでをる。Furthermore, regarding the relationship between the print head drive voltage and the temperature inside the printer housing and the print head temperature shown in FIG.
Desired characteristics can be independently obtained by changing the amplification degree of the amplifier 4.5 by varying the amplification degree of the amplifier 4.5.
本発明は、以上に説明したように、印字ヘッド上及びプ
リンタ装置筺体内に複数の温度検出素子を持ち、各々の
出力を各々独立の増幅度で増幅した後加算し、その結果
に応じて印字ヘッド駆ｌＩＪ電圧を変化させることによ
り、より細かな温度制御が可能となり、印字ヘッドへの
蓄熱効果、印字−・ラドと印字用紙・プラテン面の温度
差等の影響による印字１１１ＩＦＪＬ変化を除去し、均
一な印字濃度が得られる効果がある。As explained above, the present invention has a plurality of temperature detection elements on the print head and in the printer housing, and the outputs of each are amplified at independent amplification degrees and then added together, and printing is performed according to the results. By changing the head drive lIJ voltage, more detailed temperature control is possible, eliminating print 111IFJL changes caused by heat storage effects in the print head, temperature differences between printing - rad and printing paper/platen surface, etc. This has the effect of providing uniform print density.
第１図はサーマルプリンタ装置においである一定の印字
濃度を得るのに必寮な印字エネルギーと周囲温度、印字
時間の関係の一例を示す図、第２図は本発明に係るサー
マルプリンタ装置の一実施例を示すブロック構成図、＃
Ｉ３図は本発明の一実施例における印字ヘッド駆動電圧
と、印字ヘッド温度及びプリンタ装ｆｉ１筺体内潟度と
の関係を示すグラフである。
１・争・印字ヘッド上の温度検出集子、２・・・プリン
タ装置筺体内の温度検出集子、３・・・積分器、４．５
・・・増幅器、６・・・加算器、７ｅ・・電電制御回路
、８・・・プリンタ制御回路
７−
Ｒ回温次
第１ 図
第２図FIG. 1 is a diagram showing an example of the relationship between the printing energy, ambient temperature, and printing time necessary to obtain a certain print density in a thermal printer device, and FIG. Block configuration diagram showing an example, #
Figure I3 is a graph showing the relationship between the print head drive voltage, the print head temperature, and the degree of lag within the printer device fi1 housing in one embodiment of the present invention. 1.Temperature detection collector on the print head, 2.Temperature detection collector in the printer housing, 3.Integrator, 4.5
...Amplifier, 6...Adder, 7e...Electrical control circuit, 8...Printer control circuit 7-R Depends on temperature 1 Figure 2
Claims (1)
ッドの温度を検出する温度検出素子と、プリンタ装ｆｉ
１ｍ体内の温度を検出する少なくとも１つの温度検出素
子と、前記複数の温度検出素子の出力を各々独立に一定
の増幅度で増幅後に加算する加算回路と、前記加算回路
の出力に応じて前記印字ヘッドに印加される電源電圧を
変化させる電源制御回路とを有することを特徴としたサ
ーマルプリンタ装置。In a thermal printer device, there is a temperature detection element on the print head that detects the temperature of the print head, and a printer equipment fi.
at least one temperature detection element that detects a temperature within the body; an addition circuit that independently amplifies the outputs of the plurality of temperature detection elements at a constant amplification degree and then adds them; and the printing according to the output of the addition circuit. A thermal printer device comprising: a power supply control circuit that changes a power supply voltage applied to a head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18379983A JPS6076358A (en) | 1983-10-01 | 1983-10-01 | Thermal printer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18379983A JPS6076358A (en) | 1983-10-01 | 1983-10-01 | Thermal printer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6076358A true JPS6076358A (en) | 1985-04-30 |
Family
ID=16142110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18379983A Pending JPS6076358A (en) | 1983-10-01 | 1983-10-01 | Thermal printer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6076358A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0816090A3 (en) * | 1996-07-04 | 1998-09-23 | Canon Kabushiki Kaisha | Recording head and recording apparatus |
| JP2015174287A (en) * | 2014-03-14 | 2015-10-05 | 株式会社東芝 | Printing device and control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58138665A (en) * | 1982-02-12 | 1983-08-17 | Fuji Xerox Co Ltd | Driving device for heat-sensitive recording head |
-
1983
- 1983-10-01 JP JP18379983A patent/JPS6076358A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58138665A (en) * | 1982-02-12 | 1983-08-17 | Fuji Xerox Co Ltd | Driving device for heat-sensitive recording head |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0816090A3 (en) * | 1996-07-04 | 1998-09-23 | Canon Kabushiki Kaisha | Recording head and recording apparatus |
| US6068363A (en) * | 1996-07-04 | 2000-05-30 | Canon Kabushiki Kaisha | Recording head and apparatus employing multiple temperature sensors to effect temperature control |
| JP2015174287A (en) * | 2014-03-14 | 2015-10-05 | 株式会社東芝 | Printing device and control method |
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