Fluorescent ink for automatic identification
US4186020A · kind A · utility
62Cited by
11References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1976 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Jun 1, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluorescent printing ink for non-impact type application, especially used for coding purposes, in which the fluid ink composition is formulated of an organic solvent base containing 0.005 to 2.0% by weight fluorescent dye, up to 60% by weight resinous binder, up to 5% by weight of an organic brightener, and 0.1 to 3.0% by weight organic phosphor, and which also includes an evaporation retardant in an amount within the range of 2 to 30% by weight and an alkali metal thiocyanate in an amount up to 2% by weight, and in which the ingredients are all dissolved in the organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.