In-line coating weight and radiant energy exposure measurement
US11614404B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2019 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | May 28, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring the radiant exposure of energy curable inks or coatings on a printing press. The steps for measuring comprise: a) providing an ink or coating material comprising a fluorescent probe; b) transferring the ink or coating material onto a substrate using a printing process; c) exposing the ink or coating material to actinic radiation capable of initiating cure of the ink or coating material that also alters the luminescence of the probe; d) exposing the ink or coating to a first source of excitation light with wavelength and luminance capable of absorption by the fluorescent probe; and e) measuring the emitted light from the fluorescent probe by a first detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.