JPS6183932U - - Google Patents
Info
- Publication number
- JPS6183932U JPS6183932U JP16805084U JP16805084U JPS6183932U JP S6183932 U JPS6183932 U JP S6183932U JP 16805084 U JP16805084 U JP 16805084U JP 16805084 U JP16805084 U JP 16805084U JP S6183932 U JPS6183932 U JP S6183932U
- Authority
- JP
- Japan
- Prior art keywords
- thermal head
- control circuit
- printing
- pulses
- unit
- 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
Landscapes
- Electronic Switches (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Description
第１図は本考案のサーマルヘツド駆動装置の実
施例を示すブロツク図、第２図、第５図、第７図
、第８図はその動作のタイミングチヤート、第３
図は本考案のサーマルヘツド駆動装置の要部実施
例を示すブロツク図、第４図は温度検知手段に使
用するサーミスタの温度特性を示す特性図、第６
図は制御回路の要部の変形例を示す結線図である
。
１……サーマルヘツド、２……単位発熱体、５
……制御回路、６……電源部、７……温度検知手
段、８……選択回路、１１……発振器、２２，２
３……スイツチ回路。
FIG. 1 is a block diagram showing an embodiment of the thermal head driving device of the present invention, FIGS. 2, 5, 7, and 8 are timing charts of its operation.
The figure is a block diagram showing an embodiment of the main part of the thermal head drive device of the present invention, FIG. 4 is a characteristic diagram showing the temperature characteristics of the thermistor used as the temperature detection means, and FIG.
The figure is a wiring diagram showing a modification of the main parts of the control circuit. 1... Thermal head, 2... Unit heating element, 5
... Control circuit, 6 ... Power supply section, 7 ... Temperature detection means, 8 ... Selection circuit, 11 ... Oscillator, 22, 2
3...Switch circuit.
Claims (1)
加する印字パルス用の電力を供給する電源部と、
この電源部の温度を測定する温度検知手段と、前
記サーマルヘツドを構成する各単位発熱体に単位
時間内に供給する印字パルスの電力を可変制御す
る制御回路と、前記温度検知手段の出力により前
記電源部の温度を基準値と比較して、前記単位時
間内に供給する印字パルスの電力を変更するよう
制御回路の動作を選択する選択回路とから構成さ
れたことを特徴とするサーマルヘツド駆動装置。 ２ 制御回路は、単位発熱体に印字パルスを供給
する周期を定める２種以上のクロツクパルスを発
生させる発振器を有し、選択回路は前記クロツク
パルスの一種を選択することを特徴とする実用新
案登録請求の範囲第１項記載のサーマルヘツド駆
動装置。 ３ 制御回路は、１ラインの印字動作中に、サー
マルヘツドを構成する全単位発熱体を２群以上に
分割して各群に時間をずらして印字パルスを供給
するスイツチ回路を有し、選択回路は前記分割数
を所定値に撰択することを特徴とする実用新案登
録請求の範囲第１項記載のサーマルヘツド駆動装
置。[Claims for Utility Model Registration] 1. A thermal head, a power supply section that supplies power for printing pulses to be applied to the thermal head,
A temperature detecting means for measuring the temperature of the power supply unit, a control circuit for variably controlling the power of the printing pulses supplied within a unit time to each unit heating element constituting the thermal head, and A thermal head drive device comprising: a selection circuit that compares the temperature of a power supply unit with a reference value and selects an operation of a control circuit so as to change the power of printing pulses supplied within the unit time. . 2. A utility model registration claim characterized in that the control circuit has an oscillator that generates two or more types of clock pulses that determine the cycle of supplying printing pulses to the unit heating element, and the selection circuit selects one of the clock pulses. The thermal head drive device according to scope 1. 3. The control circuit has a switch circuit that divides all unit heating elements constituting the thermal head into two or more groups and supplies printing pulses to each group at staggered times during one line printing operation, and a selection circuit. The thermal head driving device according to claim 1, wherein the number of divisions is selected to be a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16805084U JPS6183932U (en) | 1984-11-07 | 1984-11-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16805084U JPS6183932U (en) | 1984-11-07 | 1984-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6183932U true JPS6183932U (en) | 1986-06-03 |
Family
ID=30725833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16805084U Pending JPS6183932U (en) | 1984-11-07 | 1984-11-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6183932U (en) |
-
1984
- 1984-11-07 JP JP16805084U patent/JPS6183932U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE143494T1 (en) | MEASUREMENT OF HEAT CONDUCTION AND SPECIFIC HEAT | |
| JPS57205179A (en) | Thermal printer | |
| JPH0688421B2 (en) | Drive pulse width controller for thermal print head | |
| JPS61118600U (en) | ||
| JPS61180738U (en) | ||
| JPS6451958A (en) | Manufacture of thick membrane-type thermal head | |
| JPS5293350A (en) | Heating device for heating elements | |
| JPH0476290U (en) | ||
| JPS6251466U (en) | ||
| JPS6450945U (en) | ||
| JPS6351740U (en) | ||
| JPH0229736U (en) | ||
| JPH01133610U (en) | ||
| JPS5686784A (en) | Heat sensitive recording system | |
| JPS59129538U (en) | Thermal head drive device | |
| JPS6189155U (en) | ||
| JPS6337233U (en) | ||
| JPH01178616U (en) | ||
| JPS642265U (en) | ||
| JPS5638280A (en) | Thermal recording device | |
| JPH0188964U (en) | ||
| JPH03109843U (en) | ||
| JPH02123610U (en) | ||
| JPS6437216U (en) | ||
| JPS62178153U (en) |