JPS54161949A - Recorder - Google Patents
RecorderInfo
- Publication number
- JPS54161949A JPS54161949A JP7051678A JP7051678A JPS54161949A JP S54161949 A JPS54161949 A JP S54161949A JP 7051678 A JP7051678 A JP 7051678A JP 7051678 A JP7051678 A JP 7051678A JP S54161949 A JPS54161949 A JP S54161949A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power
- voltage
- heating
- occurrence
- 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.)
- Granted
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
- B41J2/37—Print density control by compensation for variation in current
Landscapes
- Electronic Switches (AREA)
- Fax Reproducing Arrangements (AREA)
Abstract
PURPOSE:To prevent the occurrence of uneven recording owing to fluctuations in supply voltage by detecting the electric power being applied to heating elements and controlling the power supply and cut-off from the power source. CONSTITUTION:A switching element 2 is turned ON by the set output from an FF circuit according to write signal and the DC voltage from a power source 1 having rectified a commercial AC power soruce is applied to a heating element 3. This voltage is squared in a square circuit 4 and is made to the DC signal of the level corresponding to the power to be supplied to the element 3 corresponding to the heating temperature of the element 3 by an integrating circuit 5. When the output level of the circuit 5 reaches the specified value, a level detector 6 generates a detection signal, which in turn resets the circuit 7. Thereby, the power supply through the element 2 to the element 3 is cut off and even at the fluctuating of the supply voltage the occurrence of uneven recording is prevented by the constant heating of the element 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7051678A JPS54161949A (en) | 1978-06-12 | 1978-06-12 | Recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7051678A JPS54161949A (en) | 1978-06-12 | 1978-06-12 | Recorder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54161949A true JPS54161949A (en) | 1979-12-22 |
JPS6215357B2 JPS6215357B2 (en) | 1987-04-07 |
Family
ID=13433764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7051678A Granted JPS54161949A (en) | 1978-06-12 | 1978-06-12 | Recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161949A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130345U (en) * | 1981-02-03 | 1982-08-13 | ||
JPS61179762A (en) * | 1985-02-05 | 1986-08-12 | Matsushita Graphic Commun Syst Inc | Recording apparatus |
US5253934A (en) * | 1990-06-26 | 1993-10-19 | Eastman Kodak Company | L.E.D. array printer with extra driver channel |
JPH08295046A (en) * | 1995-04-26 | 1996-11-12 | Kofu Nippon Denki Kk | Battery driven thermal printer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62137073A (en) * | 1985-12-10 | 1987-06-19 | 森 敬 | Solar ray irradiation remedy apparatus |
-
1978
- 1978-06-12 JP JP7051678A patent/JPS54161949A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130345U (en) * | 1981-02-03 | 1982-08-13 | ||
JPS61179762A (en) * | 1985-02-05 | 1986-08-12 | Matsushita Graphic Commun Syst Inc | Recording apparatus |
US5253934A (en) * | 1990-06-26 | 1993-10-19 | Eastman Kodak Company | L.E.D. array printer with extra driver channel |
JPH08295046A (en) * | 1995-04-26 | 1996-11-12 | Kofu Nippon Denki Kk | Battery driven thermal printer |
Also Published As
Publication number | Publication date |
---|---|
JPS6215357B2 (en) | 1987-04-07 |
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