Direct thermal recording media with perforated particles
US11718103B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2020 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Oct 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K1/121
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Direct thermal recording media are designed to operate based on a thermally-induced change of state rather than a thermally-induced chemical reaction between a leuco dye and an acidic developer. The media use two types of scattering particles, one of which changes its state from solid to liquid during printing, and the other of which does not. The former particles, upon melting, fill spaces between the latter particles, thus eliminating or substantially reducing light scattering, which makes an underlying colorant visible at selected print locations where heat is locally applied. The latter, higher melting point particles have a caged morphology and comprise perforated particles. The media can provide high quality thermally-produced images at print speeds at least as high as 10 inches per second (ips).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.