Ink ribbon drive for data printers
US4303345A · kind A · utility
4Cited by
23References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1979 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Jun 20, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J33/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A ribbon drive for an ink printer ribbon housed in a cartridge and mounted on a reciprocating print head carriage is disclosed. The ribbon drive includes a vertically oriented drive shaft supported on the carriage for rotary motion. A pair of hubs are supported one above the other on the shaft by oppositely operating one-way clutch bearings. Each of the hubs has coiled therearound a constant force, self-coiling band spring. An end of each of the band springs is secured to the printer frame. As the print head carriage translates, the drive shaft is alternately driven by the hubs as the springs wind and unwind therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.