Ribbon cartridge having hybrid ink re-inking
US5059045A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Jun 25, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J31/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cartridge ribbon (2) for impact printing containing an endless ribbon (4) initially carrying ink having dye as its only coloring matter. The initial dye is in heavy enough quantity to permit infrared readability of bar codes printed by the ribbon. Re-inking reservoir (16) transfers ink through drive gear (10) only to the track (28) which is impacted during printing. The ink in the reservoir is colored with carbon black. Bar code functioning is maintained by the carbon black added by re-inking. This limited presence of carbon black does not hamper ribbon feed unacceptably, while a ribbon with a full carbon-black ink would not feed well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.