Ribbon feed tension mechanism
US4661004A · kind A · utility
6Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Apr 30, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J33/52
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Member (9) has a tension arm (13) over which ribbon (3) feeds. Biasing arm (17) presses member (9) toward brake surface (7), with slot (21) moved until it encounters stud (23). At low tension of ribbon (3), brake surfaces (11) and (7) press and hold ribbon (3). As feed tension increases tension arm (13) forces member (9) back until stud (23) encounters the opposite end of slot (21), after which slightly higher force further opens the brake and arm (13) continues to provide feed tension. The mechanism is small, efficient, smooth functioning, and suited to incorporation as part of a ribbon cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.