Recording material with improved shelf-line producing prints upon thermal development with improved archivability
US6127102A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1999 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Jun 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/4989
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A recording material comprising a support and a thermosensitive element containing silver stearate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver stearate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio of the sum of the peak heights of the X-ray diffraction lines attributable to silver stearate at Bragg angles, 2.THETA., of 2.THETA., of 3.62.degree., 5.45.degree., 7.30.degree., 9.04.degree., 10.97.degree. and 12.71.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.3, determined with the same X-ray diffractometer in the same state of adjustment on a sample of the recording material and a sample of the NIST standard 1976 cut to fit a sample holder of the X-ray diffractometer, divided by the square root of the quantity of silver in the recording material, expressed in g per m.sup.2, is greater than 2.2 m/g.sup.0.5 ; and a process for producing particles of substantially light-ins…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.