Laser markable compositions, materials and documents
US10286707B2 · kind B2 · utility
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1References
12Claims
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Assignee
Inventors
Key dates
| Filing date | May 19, 2015 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | May 19, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A color laser markable composition includes at least a first and a second Diffusion Hindered Molecular Assembly (DHMA), each including a leuco dye and, respectively, a first and second sensitizer. With the laser markable composition, at least two different colors may be formed in a single layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.