Fluorescent valve jet ink
US5988807A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Dec 8, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluorescent ink that makes tagger marks and is able to be used in valve jet printers at a rate of four #10 envelopes per second. The ink also penetrates paper at a rapid rate and dries at the same time it is penetrating the paper, without degrading the print quality. The penetrating agent solvent system may be isopropyl alcohol in combination with a surfactant. The surfactant may be polyethylene glycol ethers. Polyethylene glycol ethers have a high boiling point and low vapor pressure. The penetrating agent solvent system has a low boiling point and high vapor pressure and a low static and dynamic surface tension. This improves the inks rate of penetration into the paper and diminishes the amount of offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.