Primer composition and method
US10042274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2015 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Jan 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8427
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining coat weight of a transparent primer coating for liquid electrophotographic printing processes is described, in which an optical brightening agent is added to an aqueous transparent primer composition in an amount of less than 0.1 wt. % based on the total solids content of the primer composition to produce a test composition, the test composition is applied onto a test substrate to produce a transparent primer coating, the fluorescence of the transparent primer coating is measured, and the coat weight of the transparent primer coating based on the fluorescence of the transparent primer coating is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.