JPS57199669A - Dot printing head - Google Patents
Dot printing headInfo
- Publication number
- JPS57199669A JPS57199669A JP8379081A JP8379081A JPS57199669A JP S57199669 A JPS57199669 A JP S57199669A JP 8379081 A JP8379081 A JP 8379081A JP 8379081 A JP8379081 A JP 8379081A JP S57199669 A JPS57199669 A JP S57199669A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- permanent magnet
- magnetic flux
- electromagnetic
- electromagnetic coils
- 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
- B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
- B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
- B41J2/27—Actuators for print wires
- B41J2/28—Actuators for print wires of spring charge type, i.e. with mechanical power under electro-magnetic control
Landscapes
- Impact Printers (AREA)
Abstract
PURPOSE:To cut magnetic flux resulting from a permanent magnet by a small electric power by using a system in which a subbypath is provided to the electromagnetic circuit of electromagnetic coil in a spring charge type dot printing head in such a way as to reduce the magnetic resistance of the magnetic circuit with reference to the electromagnetic coil. CONSTITUTION:Under the condition that electricity is not supplied to the first and second electromagnetic coils 6 and 7, the magnetic flux 11 of a permanent magnet 2 passes through the magnetic paths i.e. , the permanent magnet 2-the fit bypath 4 of core 3 and the second bypath 5-armature 9-yoke 1-permanent magnet 2. When electromagnetic coils 6 and 7 are energized by a printing command, the magnetic flux 11 of the permanent magnet 2 is erased by the magnetic fluxes 13 and 14 and the armature 9 is turned counterclockwise by the reaction of a plate spring 8. In this case, since the amount of the magnetic flux of the electromagnetic coils 6 and 7, passing through two bypaths 4 and 5 of the core 3 which are the magnetic paths for the magnetic flux 11 of the permanent maget 2, is very small, magnetic resistance can be lessened for the electromagnetic coils and electric power required for energization can also be reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8379081A JPS57199669A (en) | 1981-06-02 | 1981-06-02 | Dot printing head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8379081A JPS57199669A (en) | 1981-06-02 | 1981-06-02 | Dot printing head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57199669A true JPS57199669A (en) | 1982-12-07 |
JPS625073B2 JPS625073B2 (en) | 1987-02-03 |
Family
ID=13812435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8379081A Granted JPS57199669A (en) | 1981-06-02 | 1981-06-02 | Dot printing head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57199669A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5039235A (en) * | 1988-10-18 | 1991-08-13 | Seiko Epson Corporation | Printer utilizing improved impact dot print head |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5563283A (en) * | 1978-11-06 | 1980-05-13 | Fujitsu Ltd | Wire dot printer |
JPS568456U (en) * | 1979-07-03 | 1981-01-24 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS568456B2 (en) * | 1973-09-04 | 1981-02-24 |
-
1981
- 1981-06-02 JP JP8379081A patent/JPS57199669A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5563283A (en) * | 1978-11-06 | 1980-05-13 | Fujitsu Ltd | Wire dot printer |
JPS568456U (en) * | 1979-07-03 | 1981-01-24 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5039235A (en) * | 1988-10-18 | 1991-08-13 | Seiko Epson Corporation | Printer utilizing improved impact dot print head |
Also Published As
Publication number | Publication date |
---|---|
JPS625073B2 (en) | 1987-02-03 |
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