Ribbon shield for printer
US4285604A · kind A · utility
7Cited by
7References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1979 |
| Grant date | Aug 25, 1981 |
| Priority date | — |
| Expiry date | Oct 19, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J35/26
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A user replaceable printer ribbon shield of simple design is provided for use in high speed matrix printers utilizing continuous forms. The shield is detachably mounted. During printing, the shield prevents outfolds in the forms from catching on the ribbon and prevents ribbon ink from migrating to the forms. It moves with the platen slightly away from the matrix print head when the machine is idle for at least a preset period of time. This causes the ribbon to move away from the ends of the print wires in the matrix print head to keep print wire lubricatng oil from migrating to the ribbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.