Thermographic recording material with improved image tone
US6677274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Nov 2, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/49809
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A substantially light-insensitive thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing silver behenate including phase I silver behenate having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 4.53°, 5.96-6.05°, 7.46-7.56°, 8.90-9.12°, 10.45-10.66°, 12.02-12.12°, 13.53-13.62°, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermographic recording material is capable upon thermal development of containing 1% of phase II silver behenate, having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 5.34-5.78°, 6.12-6.41°, 7.68-7.79°, 8.30-8.59°, 9.36-9.84°, 10.6-10.96°, and/or phase III silver behenate phase, having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 4.76-4.81°, 5.9-6.3°, 6.76-7.35°, 8.27-8.44° and 9.06-9.43°, which is stable at 25° C., with respect to the quantity of the phase I silver behenate in the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.