Ribbon feed mechanism providing a constant relative velocity between ribbon and print head
US4632582A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Feb 22, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J33/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A ribbon feed mechanism for a bi-directional printer that produces a constant relative ribbon to print-head velocity. The invention produces the constant relative velocity by coupling the ribbon to the print-head through a reciprocating shuttle, which moves in an opposite direction to and at one-half the speed of the print-head. As the shuttle reciprocates it engages the ribbon such that a constant length is maintained between the ribbon supply and the print-head and between the print-head and the ribbon take-up. The ribbon is taken up at a constant speed. By this method, the relative ribbon to print-head speed is fixed at the ribbon take-up speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.