Photographic elements with incorporated hydrogen source photoreductant and tetrazolium salt
US4284704A · kind A · utility
13Cited by
15References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1978 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Sep 29, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/137
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Imaging means, such as a tetrazolium salt, capable of reduction to form a visible image is present in a radiation-sensitive layer in combination with a photoreductant incorporating one or more labile hydrogen atoms and capable of producing a reducing agent precursor in radiation-struck areas of the layer. An image is produced in the layer by processing the layer after imagewise exposure to actinic radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.