IT1085897B - Impact matrix print head solenoid assembly - has permanent magnet to hold print wire armature and deflect spring with electromagnets to overcome magnetic force - Google Patents
Impact matrix print head solenoid assembly - has permanent magnet to hold print wire armature and deflect spring with electromagnets to overcome magnetic forceInfo
- Publication number
- IT1085897B IT1085897B IT2373777A IT2373777A IT1085897B IT 1085897 B IT1085897 B IT 1085897B IT 2373777 A IT2373777 A IT 2373777A IT 2373777 A IT2373777 A IT 2373777A IT 1085897 B IT1085897 B IT 1085897B
- Authority
- IT
- Italy
- Prior art keywords
- armature
- permanent magnet
- electromagnets
- magnetic force
- solenoid assembly
- Prior art date
Links
Abstract
The printing head increases the resulting impact force of the print needle by combining forces from oppositely-directed magnetic fields. A permanent magnet holds an armature connected to a print wire in a retracted, non-printing position, thus applying a holding force to the armature and deflecting a spring coupled to the armature. An electromagnet is energized to produce a magnetic field which acts on the armature and overcomes the field of the permanent magnet. The field produced by a second electromagnet has a component which urges the interconnected armature and print wire away from their retracted position and toward a printing position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2373777A IT1085897B (en) | 1977-05-18 | 1977-05-18 | Impact matrix print head solenoid assembly - has permanent magnet to hold print wire armature and deflect spring with electromagnets to overcome magnetic force |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2373777A IT1085897B (en) | 1977-05-18 | 1977-05-18 | Impact matrix print head solenoid assembly - has permanent magnet to hold print wire armature and deflect spring with electromagnets to overcome magnetic force |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1085897B true IT1085897B (en) | 1985-05-28 |
Family
ID=11209562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2373777A IT1085897B (en) | 1977-05-18 | 1977-05-18 | Impact matrix print head solenoid assembly - has permanent magnet to hold print wire armature and deflect spring with electromagnets to overcome magnetic force |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1085897B (en) |
-
1977
- 1977-05-18 IT IT2373777A patent/IT1085897B/en active
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