Silver halide photographic light-sensitive material and image formation method using the same
US5827638A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1997 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Mar 20, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/161
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide photographic light-sensitive material is described, which comprises a support having provided thereon a light-sensitive silver halide emulsion layer, wherein the silver halide photographic material contains a compound having been blocked by a metal chelate and capable of releasing a photographically useful compound therefrom through a reaction of the metal chelate moiety with a water-soluble chelating agent capable of forming a metal chelate having a higher stability constant on development. A method for forming an image is also described, which comprises processing, after imagewise exposure, a silver halide photographic light-sensitive material with a processing solution containing a nitrogen-containing heterocyclic carboxylic acid-base chelating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.