JPS641560A - Thermal head driving apparatus - Google Patents
Thermal head driving apparatusInfo
- Publication number
- JPS641560A JPS641560A JP15646587A JP15646587A JPS641560A JP S641560 A JPS641560 A JP S641560A JP 15646587 A JP15646587 A JP 15646587A JP 15646587 A JP15646587 A JP 15646587A JP S641560 A JPS641560 A JP S641560A
- Authority
- JP
- Japan
- Prior art keywords
- thermal head
- rom
- control
- level
- signal
- 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)
Abstract
PURPOSE: To uniformize printing density, by mounting an applying energy operation means for operating the energy to be applied to a unit heat generator corresponding to the judged level signal from image data pattern judge means and a level selection means for performing the control of the supply of the current of a predetermined level to the unit heat generator.
CONSTITUTION: A pattern judge ROM 9 judges the number of the levels of the current supply time of a thermal head on the basis of the table which is preliminarily stored in the pattern judge ROM 9 and formed on reference to the dots arround a noticeable dot on the basis of the image data corresponding to 8 dots. Further, the energy applied to the thermal head corresponding to said number of the levels is operated by an applying energy operation ROM 12. Furthermore, the output from the pattern judge ROM 9 is inputted to a level selection means to output a current supply time control signal of the level corresponding to the reference dot around a dot to be recorded, and this control head data signal and the applying energy operation signal are supplied to a thermal head control circuit 17 to control the energy to be applied and current supply time to the thermal head 18.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156465A JPH011560A (en) | 1987-06-25 | Thermal head drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156465A JPH011560A (en) | 1987-06-25 | Thermal head drive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS641560A true JPS641560A (en) | 1989-01-05 |
| JPH011560A JPH011560A (en) | 1989-01-05 |
Family
ID=
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04129755A (en) * | 1990-09-20 | 1992-04-30 | Sanyo Electric Co Ltd | Printing control method |
| US5444464A (en) * | 1992-01-20 | 1995-08-22 | Mitsubishi Denki Kabushiki Kaisha | Thermal printer head driving circuit with thermal history based control |
| JPH09220822A (en) * | 1996-02-19 | 1997-08-26 | Nec Yonezawa Ltd | Thermal printer |
| US7304658B2 (en) | 2004-12-21 | 2007-12-04 | Funai Electric Co., Ltd. | Thermal printer and method for correcting the energizing time data for heating elements in the thermal printer |
| JP2016198955A (en) * | 2015-04-10 | 2016-12-01 | 富士通コンポーネント株式会社 | Thermal printer |
| WO2021192347A1 (en) * | 2020-03-25 | 2021-09-30 | 京セラ株式会社 | Interface circuit and heat history control method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04129755A (en) * | 1990-09-20 | 1992-04-30 | Sanyo Electric Co Ltd | Printing control method |
| US5444464A (en) * | 1992-01-20 | 1995-08-22 | Mitsubishi Denki Kabushiki Kaisha | Thermal printer head driving circuit with thermal history based control |
| JPH09220822A (en) * | 1996-02-19 | 1997-08-26 | Nec Yonezawa Ltd | Thermal printer |
| US7304658B2 (en) | 2004-12-21 | 2007-12-04 | Funai Electric Co., Ltd. | Thermal printer and method for correcting the energizing time data for heating elements in the thermal printer |
| JP2016198955A (en) * | 2015-04-10 | 2016-12-01 | 富士通コンポーネント株式会社 | Thermal printer |
| WO2021192347A1 (en) * | 2020-03-25 | 2021-09-30 | 京セラ株式会社 | Interface circuit and heat history control method |
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