JPS5772869A - Dot printing head - Google Patents
Dot printing headInfo
- Publication number
- JPS5772869A JPS5772869A JP14816680A JP14816680A JPS5772869A JP S5772869 A JPS5772869 A JP S5772869A JP 14816680 A JP14816680 A JP 14816680A JP 14816680 A JP14816680 A JP 14816680A JP S5772869 A JPS5772869 A JP S5772869A
- Authority
- JP
- Japan
- Prior art keywords
- spring hammer
- core
- armature
- coil
- ring
- 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 prevent stress concentration and prolong a life, in a printing head carry out printing by a mechanism wherein a spring hammer is attracted by a permanent magnet and magnetic flux is erased by magnetically exciting an electromagnet to move the spring hammer, by providing a permeation pore to central part of the spring hammer. CONSTITUTION:A spring hammer 7 is provided from a ring peripheral flange part in an almost centripetal fashion and a magnetic core having a coil 4 wound therearound is arranged to a position corresponding to each spring hammer 7 and a ring like magnetic passage is constituted by said core, a ring like permanent magnet 3 and the spring hammer 7. The spring hammer 7 is attracted to the core in such a condition that current is not passed through the coil 4 and, by passing current through the coil to erase magnetic flux, parted from the core to move a wire of a leading end of an armature 8 contacted to an upper surface thereof and, thereby, printing is carried out. In this time, stress is concentrated to a contact part of the armature 8 and the spring hammer 7 to often generate damage but, if a permeation pore 18 is provided to a peripheral part from the contact part with the armature 8, stress concentration can be prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14816680A JPS6013829B2 (en) | 1980-10-24 | 1980-10-24 | dot print head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14816680A JPS6013829B2 (en) | 1980-10-24 | 1980-10-24 | dot print head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5772869A true JPS5772869A (en) | 1982-05-07 |
JPS6013829B2 JPS6013829B2 (en) | 1985-04-09 |
Family
ID=15446718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14816680A Expired JPS6013829B2 (en) | 1980-10-24 | 1980-10-24 | dot print head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6013829B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59164736U (en) * | 1983-04-19 | 1984-11-05 | 沖電気工業株式会社 | wire dot print head |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS646134U (en) * | 1987-06-29 | 1989-01-13 |
-
1980
- 1980-10-24 JP JP14816680A patent/JPS6013829B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59164736U (en) * | 1983-04-19 | 1984-11-05 | 沖電気工業株式会社 | wire dot print head |
JPH0234038Y2 (en) * | 1983-04-19 | 1990-09-12 |
Also Published As
Publication number | Publication date |
---|---|
JPS6013829B2 (en) | 1985-04-09 |
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