Thermographic or photothermographic image recording elements
US6146822A · kind A · utility
22Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Jun 5, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/166
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Thermographic or photothermographic image recording elements comprising (a) a reducible silver salt, (b) a reducing agent, (c) a binder, (d) a specific phthalazine derivative and (e) an organic acid compound experience a minimized drop of image density when stored under warm humid conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.