Paper coating for ink jet printing
US6528119B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2000 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Jan 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31996
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention provides an improved paper coating composition for ink jet printing applications. The composition contains from about 2 to about 1 parts by weight polyvalent metal salt, from about 0 to about 30 parts by weight deionized water, an effective amount of cationic amine polymer and surfactant and from about 35 to about 60 parts by weight of an ink penetrant promoter selected from the group consisting of 1,2-propanediol, dipropylene glycol and mixtures of 1,2-propanediol and dipropylene glycol. Since the composition is free from ethylene glycol components, the composition is safer to use and less harmful to humans and the environment. The composition has also been found to provide improved ink drying with less bleeding or smearing of image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.