Wire dot print head
US5165808A · kind A · utility
1Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1990 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Dec 12, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/235
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A spring-charged wire dot print head having printing wires is provided with back poles paired up respectively with the cores of electromagnets for cancelling the magnetic flux produced by a permanent magnet, to eliminate the adverse effect of magnetic interference liable to occur in driving the adjacent printing wires. The adjacent pairs of cores and back poles are opposite to each other with respect to the polarity of the magnetic path of the magnetic flux produced by the permanent magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.