Cassette type ink ribbon device
US4352577A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1980 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Sep 23, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J32/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cassette type ink ribbon device for use in printing apparatus comprises a pair of cassette cases releasably connected together by mutually engaging pawls. The connected together cassette cases contain ink and transfer rollers for inking an ink ribbon, and a tensioner for applying a tensioning force to the ink ribbon. The tensioner comprises a slidable guide body having a cavity in which the slack part of the ink ribbon is stored, and a biasing spring which biases the guide body in a direction to apply the tensioning force to the ink ribbon. Both cassette cases may have the same shape and configuration thereby simplifying manufacturing costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.