Inking system including reusable paper and water-humectant ink
US6318265A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2000 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Jan 28, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M7/0027
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A special ink consists of water and a humectant. A reusable paper includes a surface darkened by a water-insoluble material and a coating covering the darkened surface. The coating is made of a material that scatters light when dry and that becomes at least translucent when wetted by water. If the special ink is used to print on the reusable paper, the print will be visible for a limited period of time (e.g., half an hour). By the end of that time period, however, the special ink will have evaporated and the print will have disappeared completely from the reusable paper. The special ink may be applied to the reusable paper by an inkjet printer. An inkjet cartridge for such a printer includes a casing filled with the special ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.