Ribbon feed mechanism
US4797690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J17/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a ribbon feed mechanism for use in a heat transfer printer. The ribbon feed mechanism includes first, second, and third ribbon feed components fitted on a shaft, a friction plate mounted between the first and second ribbon feed components, a spring mounted between the second and third ribbon feed components, a cylinder which is in contact with the third ribbon feed component at one end thereof, and a ribbon feed presser for pressing the other end of the cylinder toward the third ribbon feed component. The rotational torque is always kept constant, and therefore no unmatching of colors occurs when the mechanism is applied to a printer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.