Current collector for resistive ribbon printers
US4329071A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1980 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/35
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
For an electro-thermal printer of the kind that uses a ribbon having a central conducting layer that is covered on one surface by a resistive layer that receives electrical printing currents and on the other surface by a thermally transferrable ink layer, printing current is collected from the conducting layer by an electrically conducting contactor at the ink layer surface of the ribbon. Such contact through the ink layer occurs on the takeup side of a printhead where the integrity of the ink layer is not of concern and voids in the ink layer occur as a result of ink transfers for printing. To increase the quality of the electrical connection, projecting points or barbs may be included on said contactor to penetrate to the conducting layer through intact portions of ink layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.