JPS6461273A - Thermal recording device - Google Patents
Thermal recording deviceInfo
- Publication number
- JPS6461273A JPS6461273A JP21955887A JP21955887A JPS6461273A JP S6461273 A JPS6461273 A JP S6461273A JP 21955887 A JP21955887 A JP 21955887A JP 21955887 A JP21955887 A JP 21955887A JP S6461273 A JPS6461273 A JP S6461273A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- application power
- heat generating
- pulse width
- generating element
- 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
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To compensate for an irregularity of recording density by applying the first application power which works short of printing to a heat generating element recording an image information judged as a specific pattern, and supplying the second application power to a heat generating element which corresponds to an image signal for the existing image information. CONSTITUTION:A judgement circuit 4 outputs a signal m when it judges the pattern of image signals k which are read by a single line of signals as a specific pattern, and reads out until a final line. When this reading is completed, a control part 8 issues a printing start signal o to a pulse generation circuit 5, and generates a pulsed signal q with the first pulse width Pa. The first pulse width Pa is set to such an extent that an application power given to a heat generating element is adequate but does not start printing. When a final line writing end signal n is issued, a pulsed signal r with the second pulse width Pb is generated. The second pulse width Pb is set in such a manner that a supplied application power is adequate to allow the heat generating element receiving the first application power to reach a temperature at which recording paper develops color without fail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21955887A JPS6461273A (en) | 1987-09-02 | 1987-09-02 | Thermal recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21955887A JPS6461273A (en) | 1987-09-02 | 1987-09-02 | Thermal recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6461273A true JPS6461273A (en) | 1989-03-08 |
Family
ID=16737390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21955887A Pending JPS6461273A (en) | 1987-09-02 | 1987-09-02 | Thermal recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6461273A (en) |
-
1987
- 1987-09-02 JP JP21955887A patent/JPS6461273A/en active Pending
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