Print hammer assembly method
US4524259A · kind A · utility
8Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1983 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Apr 4, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J9/133
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The impact pins of a matrix printhead are brazed by a laser to a print hammer of the flat spring type. The print hammers are then attached to a printhead mounting block adjacent to each other with the impact pins in substantially a straight line. The attached print hammers are then shaped by an electric discharge machining (EDM) process by a single electrode to simultaneously machine the impact pins to the desired shape and to position the tips of the impact pins at a precise distance with respect to one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.