Ribbon elevating mechanism for ribbon cassettes
US4423973A · kind A · utility
5Cited by
10References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1981 |
| Grant date | Jan 3, 1984 |
| Priority date | — |
| Expiry date | Dec 7, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J35/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a mechanism for raising and lowering a ribbon in front of the typing area of a typewriter or similar machine. The mechanism is so designed that only a few lightweight plastic parts need be moved thereby greatly reducing the actuating force necessary to elevate a ribbon. The mechanism also is configured to track the ribbon such that deformation of the ribbon as could impair proper functioning of the lifting and/or transporting of the ribbon during the ribbon lifting motion is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.