Direct thermographic materials with catechol borate reducing agents
US7282468B2 · kind B2 · utility
0Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Jul 18, 2005 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Jun 6, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/7628
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Non-photosensitive direct thermographic materials comprise a reducing agent that is a catechol borate compound. These compounds can reduce silver(I) ion to metallic silver to produce a dense black silver image under the short time and high temperature conditions that occur when using thermal print-heads during direct thermal printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.