Method and apparatus for perforating indicia on used thermal transfer ribbon within a cassette
US4899172A · kind A · utility
9Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1987 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Dec 28, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/0054
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In printing apparatus of the type which includes structure for thermally transferring ink from a ribbon to a workpiece, wherein the ribbon includes a backing layer and an ink donor layer, there is provided a printing process which includes the step(s) of transferring ink from the ink donor layer to the workpiece and perforating the ribbon. Moreover, it is a feature of the invention to include the processing step of sensing perforating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.