Moisture-set color developer ink
US4321093A · kind A · utility
5Cited by
13References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1980 |
| Grant date | Mar 23, 1982 |
| Priority date | — |
| Expiry date | Apr 4, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/155
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A color developer ink for use in the production of the CF coating of a carbonless copy paper set is formulated as a moisture-set ink which dries by precipitation into an immobile solid film. The formulation includes 10-40% of the color developer, preferably a zinc salt of an organic acid, 30-60% of a hygroscopic solvent, 0-5% of a water-insoluble binder, and 0-35% of a filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.