JPH0439431B2 - - Google Patents
Info
- Publication number
- JPH0439431B2 JPH0439431B2 JP27104185A JP27104185A JPH0439431B2 JP H0439431 B2 JPH0439431 B2 JP H0439431B2 JP 27104185 A JP27104185 A JP 27104185A JP 27104185 A JP27104185 A JP 27104185A JP H0439431 B2 JPH0439431 B2 JP H0439431B2
- Authority
- JP
- Japan
- Prior art keywords
- thermal recording
- printing
- circuit
- recording head
- control circuit
- 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 - Lifetime
Links
- 230000005611 electricity Effects 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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)
- Dot-Matrix Printers And Others (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は計算機などの文字、図形出力端末とし
て用いられる感熱記録式印字装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal recording type printing device used as a character and graphic output terminal for computers and the like.
本発明は感熱記録ヘツド駆動電源を定電流回路
蓄電器、定電圧回路から構成し、蓄電器に蓄えら
れている電気量を監視しながら印字制御、及び紙
送り制御を行うようにしたものである。
In the present invention, a thermal recording head drive power source is constructed from a constant current circuit capacitor and a constant voltage circuit, and printing control and paper feeding control are performed while monitoring the amount of electricity stored in the capacitor.
従来、第４図に示すように、感熱記録ヘツド
１、感熱記録ヘツド駆動電源２、印字制御回路
３、及び紙送り制御回路４からなり、印字制御
は、前記印字制御回路３、及び紙送り制御回路４
のみにより行われ、感熱記録ヘツド駆動電源２は
感熱記録ヘツド１に電力を供給するだけのもので
あつた。
Conventionally, as shown in FIG. 4, a thermal recording head 1, a thermal recording head drive power source 2, a print control circuit 3, and a paper feed control circuit 4 are used for printing control. circuit 4
The thermal recording head drive power source 2 was used only to supply power to the thermal recording head 1.
従来の感熱記録式印字装置は、印字制御回路３
が一定の間隔で印字信号５を感熱記録ヘツド１に
送り、同時に紙送り信号６を紙送り制御回路４に
送ることにより、印字と紙送りの同期をとつて印
字動作を行つていた。このため感熱記録ヘツド１
に入力される単位時間当たり電力は印字データの
内容すなわち感熱記録ヘツドを構成する発熱抵抗
体のうち、動作しているものの個数に依存する。
In the conventional thermal recording printing device, the printing control circuit 3
By sending a print signal 5 to the thermal recording head 1 at regular intervals and simultaneously sending a paper feed signal 6 to the paper feed control circuit 4, the printing operation is performed by synchronizing printing and paper feed. Therefore, the thermal recording head 1
The electric power input per unit time depends on the content of the print data, that is, the number of operating heating resistors constituting the thermal recording head.
一般の印字データの内容は、応用分野により異
なり、従来方式によれば、該装置の消費電力は大
きく変動し、印字内容により電力の時間的集中を
生じ、同時に多数の発熱低抗体を動作させなけれ
ばならない高速印字や大寸法の印字は電源設備や
装置自身のコストの増大を招き実現性が少なかつ
た。 The content of general print data varies depending on the field of application, and according to conventional methods, the power consumption of the device fluctuates greatly, causing temporal concentration of power depending on the print content, and requiring the operation of many heat generating antibodies at the same time. High-speed printing and large-sized printing, which are necessary, increase the cost of the power supply equipment and the device itself, making it difficult to realize.
従来の問題点を解決するために、本発明は定電
流回路７、蓄電器８、定電圧回路９、電気量監視
回路１０、印字制御回路３′、紙送り制御回路
４′感熱記録ヘツド１という構成からなる。
In order to solve the conventional problems, the present invention has a configuration including a constant current circuit 7, a capacitor 8, a constant voltage circuit 9, an amount of electricity monitoring circuit 10, a print control circuit 3', a paper feed control circuit 4', and a thermal recording head 1. Consisting of
定電流回路７は、商用電源に接続され、整流、
定電流化を行い蓄電器８に電力を供給している。
蓄電器８は定電流回路７から供給された電力を蓄
え、定電圧回路９へ接続され電力を供給してい
る。
The constant current circuit 7 is connected to a commercial power supply and performs rectification,
Electric power is supplied to the capacitor 8 by making it a constant current.
The capacitor 8 stores electric power supplied from the constant current circuit 7, and is connected to the constant voltage circuit 9 to supply electric power.
定電圧回路９は蓄電器８から供給された電力を
感熱記録ヘツド１が必要とする電圧に変換し供給
している。電気量監視回路１０は蓄電器８に蓄え
られた電気量を監視し印字制御回路３′へ知らせ
る。印字制御回路３′は通知された電気量の信号
をもとに感熱記録ヘツド１へ印字信号５を、又、
紙送り制御回路４へ紙送信号６を送る。感熱記録
ヘツド１は印字信号５に従つて印字を行う。紙送
り制御回路４は紙送り信号６に従つて紙送り制御
を行つている。 The constant voltage circuit 9 converts the electric power supplied from the capacitor 8 into a voltage required by the thermal recording head 1 and supplies the voltage. Electrical quantity monitoring circuit 10 monitors the quantity of electricity stored in capacitor 8 and notifies it to printing control circuit 3'. The print control circuit 3' sends a print signal 5 to the thermal recording head 1 based on the notified electric quantity signal, and
A paper transmission signal 6 is sent to the paper feed control circuit 4. The thermal recording head 1 prints according to the print signal 5. A paper feed control circuit 4 performs paper feed control in accordance with a paper feed signal 6.
以下本発明の実施例を図面に基づいて説明す
る。
Embodiments of the present invention will be described below based on the drawings.
第１図において、定電流回路７は蓄電器８に一
定電流を流しつづける。蓄電器８の端子電圧が最
高電圧に達した場合は制御信号１１によつて電力
の供給を止める。蓄電器８の端子電圧はそれに蓄
えられている電気量を示している。従つて、印字
データの内容により蓄電器８から定電圧回路９へ
供給される電力は変化するため、蓄電器８の端子
電圧も変化している。ある時刻における感熱記録
ヘツド１の消費電力が定電流回路７から供給され
る電力より大きい場合は蓄電器８の端子電圧は降
下する。又、逆の場合は、端子電圧は上昇する。
電気量監視回路１０は蓄電器８の端子電圧を監視
するためのものであり、蓄えられている電気量に
よつて、印字速度を変化させ単位時間当たりに感
熱記録ヘツド１に印加される電力を制御しようと
いうものである。第２図に蓄電器８の電気量及び
各部信号の関係を示す。又、第３図に該電気量と
印字速度の関係を示す。第２図、第３図に示す高
速印字状態において、多くの発熱抵抗体が動作す
るような印字データ１４が送られてくると感熱記
録ヘツド１における消費電力が急増し、定電流回
路７からの供給がおいつかなくなつて、第２図、
第３図に示すように電気量が減少し、蓄電器８の
端子電圧は降下する。端子電圧が減速検出レベル
以下になると減速信号１２を印字制御回路３へ送
る。印字制御回路３′は減速信号１２を受けとる
と印字信号５、紙送り制御信号６のパルス間隔を
一定の割合で増加させ印字速度を低下させてい
く。 In FIG. 1, constant current circuit 7 continues to supply a constant current to capacitor 8. When the terminal voltage of the capacitor 8 reaches the maximum voltage, the control signal 11 stops the power supply. The terminal voltage of the capacitor 8 indicates the amount of electricity stored therein. Therefore, since the power supplied from the capacitor 8 to the constant voltage circuit 9 changes depending on the content of the print data, the terminal voltage of the capacitor 8 also changes. If the power consumption of the thermal recording head 1 at a certain time is greater than the power supplied from the constant current circuit 7, the terminal voltage of the capacitor 8 drops. In the opposite case, the terminal voltage increases.
The electricity quantity monitoring circuit 10 is for monitoring the terminal voltage of the electricity condenser 8, and controls the electric power applied to the thermal recording head 1 per unit time by changing the printing speed according to the stored quantity of electricity. This is what we are trying to do. FIG. 2 shows the relationship between the amount of electricity in the capacitor 8 and the signals of each part. Further, FIG. 3 shows the relationship between the amount of electricity and printing speed. In the high-speed printing state shown in FIGS. 2 and 3, when printing data 14 that activates many heating resistors is sent, the power consumption in the thermal recording head 1 increases rapidly, and the power consumption from the constant current circuit 7 increases. As the supply slowed down, Figure 2.
As shown in FIG. 3, the amount of electricity decreases and the terminal voltage of the capacitor 8 drops. When the terminal voltage falls below the deceleration detection level, a deceleration signal 12 is sent to the print control circuit 3. When the print control circuit 3' receives the deceleration signal 12, it increases the pulse interval of the print signal 5 and the paper feed control signal 6 at a constant rate to reduce the printing speed.
第３図に印字速度と電気量の関係を示す。実施
例では、第３図に示すように等加速度の加速、減
速運動を示しているが、速度関数は印字機構部の
伝達特性によつて一様でないが、一般には等加速
度運動では差し支えない。減速運動中に電気量が
加速検出レベルを越えない場合、すなわち印字デ
ータ１４のデータ密度が高く電力の消費量が減少
していかない場合は、あらかじめ決められた最低
印字速度まで印字速度を低下させる。最低印字速
度は定電流回路７の電流供給能力、及び印字機構
部の用紙送り特性によつて決定されるが最高印時
速度の1/2〜1/10が適当であろう。 Figure 3 shows the relationship between printing speed and amount of electricity. In the embodiment, uniform acceleration and deceleration motion is shown as shown in FIG. 3, but although the speed function is not uniform depending on the transmission characteristics of the printing mechanism, generally uniform acceleration motion is acceptable. If the amount of electricity does not exceed the acceleration detection level during the deceleration movement, that is, if the data density of the print data 14 is high and the power consumption does not decrease, the printing speed is reduced to a predetermined minimum printing speed. The minimum printing speed is determined by the current supply capacity of the constant current circuit 7 and the paper feeding characteristics of the printing mechanism, but it is appropriate to set it at 1/2 to 1/10 of the maximum printing speed.
減速及び低速印字中に印字データの内容が変化
し感熱記録ヘツド１に於ける電力消費量が低下す
ると、第２図、第３図に示すように、定電流回路
７からの供給が勝つてくるため電気量は増加して
くる。電気量が加速検出レベルを越える電気量監
視回路１０は加速信号１３を印字制御回路３′へ
送る。印字制御回路３′は加速信号１３を受けと
ると印字信号５、紙送り制御信号６のパルス間隔
を一定の割合で減少させて印字速度を増加させて
いく、本手段はステツピングモータの速度制御等
で公知のことである。 When the content of the print data changes during deceleration and low-speed printing and the power consumption in the thermal recording head 1 decreases, as shown in FIGS. 2 and 3, the supply from the constant current circuit 7 becomes dominant. Therefore, the amount of electricity increases. The electrical quantity monitoring circuit 10 whose electrical quantity exceeds the acceleration detection level sends an acceleration signal 13 to the printing control circuit 3'. When the print control circuit 3' receives the acceleration signal 13, it decreases the pulse interval of the print signal 5 and paper feed control signal 6 at a constant rate to increase the print speed.This means is used to control the speed of a stepping motor, etc. This is a well-known fact.
本実施例において、第２図、第３図に示すよう
に、印字及び紙送りの制御パルスの間隔を等加速
度関数となるように示したが、不連続のステツプ
状の印字速度の制御であつてもよい。 In this embodiment, as shown in FIGS. 2 and 3, the intervals between control pulses for printing and paper feeding are shown to be a constant acceleration function, but the printing speed control is performed in discontinuous steps. It's okay.
以上の説明から明らかなように、本発明によれ
ば印字データの内容に依存せず、一定の電力で印
字動作ができるという特徴を有する。
As is clear from the above description, the present invention is characterized in that printing can be performed with constant power, regardless of the content of print data.
第１図は本発明の実施例を示すブロツク図、第
２図は、電気量と各種制御信号の関係を表すタイ
ミング図、第３図は、電気量と印字速度の関係を
表すタイミング図、第４図は、感熱記録式印字装
置の従来例を示すブロツク図である。
１……感熱記録ヘツド、２……感熱記録ヘツド
駆動電源、３，３′……印字制御回路、４……紙
送制御回路、７……定電流回路、８……蓄電器、
９……定電圧回路、１０……電気量監視回路。
FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a timing diagram showing the relationship between the amount of electricity and various control signals, and FIG. 3 is a timing diagram showing the relationship between the amount of electricity and printing speed. FIG. 4 is a block diagram showing a conventional example of a thermal recording type printing device. DESCRIPTION OF SYMBOLS 1...Thermal recording head, 2...Thermal recording head drive power supply, 3, 3'... Print control circuit, 4... Paper feed control circuit, 7... Constant current circuit, 8... Condenser,
9... Constant voltage circuit, 10... Electricity monitoring circuit.
Claims (1)
回路、及び感熱記録ヘツド駆動電源からなる感熱
記録式印字装置において、前記感熱記録ヘツド駆
動電源を、定電流回路、蓄電器、及び定電圧回路
から構成し、前記蓄電器に蓄えられた電気量を監
視し、該電気量に応じた印字速度制御信号を前記
印字制御回路に出力する電気量監視回路とを具備
し、前記印字制御回路は前記印字速度制御信号を
受け、紙送り制御信号と印字信号をそれぞれ前記
紙送り制御回路と前記感熱記録ヘツドに出力する
ことを特徴とする感熱記録式印字装置。1. In a thermal recording printing device consisting of a thermal recording head, a print control circuit, a paper feed control circuit, and a thermal recording head drive power source, the thermal recording head drive power source is composed of a constant current circuit, a capacitor, and a constant voltage circuit. , an electricity amount monitoring circuit that monitors the amount of electricity stored in the capacitor and outputs a printing speed control signal according to the electricity amount to the printing control circuit, and the printing control circuit is configured to output the printing speed control signal according to the electricity amount. 1. A thermal recording type printing device, wherein a paper feed control signal and a print signal are outputted to the paper feed control circuit and the thermal recording head, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60271041A JPS62130861A (en) | 1985-12-02 | 1985-12-02 | Thermal recording type printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60271041A JPS62130861A (en) | 1985-12-02 | 1985-12-02 | Thermal recording type printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62130861A JPS62130861A (en) | 1987-06-13 |
| JPH0439431B2 true JPH0439431B2 (en) | 1992-06-29 |
Family
ID=17494575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60271041A Granted JPS62130861A (en) | 1985-12-02 | 1985-12-02 | Thermal recording type printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62130861A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2584167B2 (en) * | 1992-01-17 | 1997-02-19 | 松下電器産業株式会社 | Optical operation storage device |
| JP3060347B2 (en) * | 1992-12-28 | 2000-07-10 | キヤノン株式会社 | Recording device |
| AUPS048302A0 (en) * | 2002-02-13 | 2002-03-07 | Silverbrook Research Pty. Ltd. | Methods and systems (ap79) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997270A (en) * | 1982-11-26 | 1984-06-05 | Nec Corp | Driving method of thermal recording head |
-
1985
- 1985-12-02 JP JP60271041A patent/JPS62130861A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997270A (en) * | 1982-11-26 | 1984-06-05 | Nec Corp | Driving method of thermal recording head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62130861A (en) | 1987-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |