Print head improvement
US3991869A · kind A · utility
11Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1975 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Dec 15, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/275
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a dot matrix printing head having a plurality of printing elements or styli each driven by an associated electromagnetically operated hinged armature, an adjustable spring arrangement for adjusting the preload biasing of each armature against an armature stop to insure that the associated electromagnets are matched with respect to flight time and can be set to deliver the proper printing force to each styli.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.