JPS59176557U - Thermal head drive circuit - Google Patents
Thermal head drive circuitInfo
- Publication number
- JPS59176557U JPS59176557U JP7066283U JP7066283U JPS59176557U JP S59176557 U JPS59176557 U JP S59176557U JP 7066283 U JP7066283 U JP 7066283U JP 7066283 U JP7066283 U JP 7066283U JP S59176557 U JPS59176557 U JP S59176557U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- thermal head
- drive circuit
- heating resistor
- 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
Landscapes
- Electronic Switches (AREA)
- Facsimile Heads (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａおよびｂは、従来のサーマルヘッドの駆動回路
における温度特性図、第２図ａおよびｂは、高速印字時
における従来のサーマルヘッドの駆動回路における温度
特性図、第３図ａおよびｂζ、１１、高速印字用の従来
のサーマルヘッドの駆動口トにおける温度特性図、第４
図ａおよびｂは、本考案における温度特性図の一例、第
５図は本考案の一実施例の要部を示すブロック図、第６
図ａ。
ｈ、 ｃおよびｄは本考案の一実施例における温度特
性図である。図において、
１．２・・・モノマルチバイブレーク、３−１〜ｎ・・
・ＯＲ回路、４−１〜ｎ・・・発熱抵抗体。Figures 1a and b are temperature characteristic diagrams of a conventional thermal head drive circuit, Figures 2a and b are temperature characteristic diagrams of a conventional thermal head drive circuit during high-speed printing, and Figures 3a and bζ , 11. Temperature characteristic diagram at drive port of conventional thermal head for high-speed printing, 4th
Figures a and b are examples of temperature characteristic diagrams of the present invention, Figure 5 is a block diagram showing the main parts of an embodiment of the present invention, and Figure 6 is a block diagram showing main parts of an embodiment of the present invention.
Diagram a. h, c and d are temperature characteristic diagrams in one embodiment of the present invention. In the figure, 1.2...Mono multi-bi break, 3-1~n...
- OR circuit, 4-1 to n... heating resistor.
Claims (1)
と、所定の印字指令により前記発熱抵抗体に通電する電
流を供給する回路と、前記通電をスタートさせる印字パ
ルスの発生回路とより形成されるサーマルヘッドの駆動
回路において、前記印字パルスの切断を検出する回路と
、前記印字パルスの切断後所定の一定時間内に次の印字
指令が無い場合前記発熱抵抗体に通電する電流値を所定
値に切替えてその通電を持続する回路とを備えることを
特徴とするサーマルヘッドの駆動回路。A thermal head that is formed by a thermal head having a heating resistor that generates heat when energized, a circuit that supplies current to the heating resistor in response to a predetermined printing command, and a printing pulse generation circuit that starts the energization. The drive circuit includes a circuit that detects the cutting of the printing pulse, and a circuit that switches the current value applied to the heating resistor to a predetermined value if there is no next printing command within a predetermined period of time after the printing pulse is cut off. A driving circuit for a thermal head, comprising: a circuit that maintains energization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7066283U JPS59176557U (en) | 1983-05-12 | 1983-05-12 | Thermal head drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7066283U JPS59176557U (en) | 1983-05-12 | 1983-05-12 | Thermal head drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59176557U true JPS59176557U (en) | 1984-11-26 |
Family
ID=30200813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7066283U Pending JPS59176557U (en) | 1983-05-12 | 1983-05-12 | Thermal head drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59176557U (en) |
-
1983
- 1983-05-12 JP JP7066283U patent/JPS59176557U/en active Pending
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