Photothermographic accelerators for leuco diazine, oxazine, and thiazine dyes
US4670374A · kind A · utility
17Cited by
15References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Feb 12, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photothermographic construction comprises a light-sensitive color-forming element on a support base, the element comprising a silver source, optionally silver halide, a binder, and an oxidizable leuco phenazine, phenoxazine, or phenothiazine dye, and as development accelerator a carboxylic acid, Lewis acid, or Bronsted acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.