Silver salt photothermographic dry imaging material
US7097962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Nov 27, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/03535
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photothermographic imaging material containing a support having thereon light-insensitive organic silver salt grains, photosensitive silver halide grains, a reducing agent for silver ions and a binder, wherein, (i) each of the organic silver salt grains has a structure having different silver ion dissociation constants at a surface portion and at an inner portion of the grain; (ii) each of the silver halide grains produces a larger number of latent images in a surface portion than in an inner portion of the grain by exposure to light; (iii) each of the silver halide grains produces a larger number of latent images in the inner portion than in the surface portion of the grain after being subjected to a thermal development; and (iv) a surface photographic speed of each of the silver halide grains decreases after being subjected to the thermal development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.