Arrangement for transferring a ribbon from a feed spool to a take-up spool
US4000804A · kind A · utility
38Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1976 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Feb 6, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J33/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An arrangement for transferring a ribbon from a feed spool to a take-up spool comprises a pair of electric motors each one connected to a corresponding spool for the rotation thereof. The motor connected to the take-up spool is supplied by a constant current generator so as to wind-up said ribbon with a minimum and substantially constant torque. The motor connected to the feed spool is supplied by a constant voltage generator so as to keep said ribbon constantly taut during the transferring thereof. A changeover device alternates the function of the two spools when the ribbon is fully wound on the take-up spool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.