Multi-purpose phenol-free direct thermal recording media
US12151498B2 · kind B2 · utility
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61References
18Claims
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Key dates
| Filing date | Dec 10, 2020 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Sep 20, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Non-phenolic direct thermal recording media have a thermally responsive layer containing a leuco dye and a plurality of non-phenolic developers including 1,3-diphenyl urea (DPU) and urea urethane (UU). This chemistry enables multi-purpose recording materials capable of withstanding multiple different types of environmental conditions or agents—such as a water soak, contact with polyvinyl chloride meat wrapping film, boiling water, dry and humid heat, sunlight, and contact with hand sanitizer. The unique non-phenolic chemistry allows the product's thermally responsive layer to have an ultra-low coat weight, less than 1.48 g/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.