Impact matrix print head solenoid assembly
US4046244A · kind A · utility
23Cited by
11References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1975 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Aug 6, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/285
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dot matrix impact print head uses a combination of cooperating forces produced by a deflected spring and dual electromagnetic fields to increase the striking force of a printing wire or needle element without adversely affecting operating frequency capabilities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.