Silver halide element with improved high temperature storage and raw stock keeping
US6472135B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2000 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Jun 13, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/30511
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention relates to a silver halide photographic element comprising at least one silver halide emulsion, said silver halide element further comprising an amido compound represented by Formula 1 wherein INH is a development inhibitor;LINK is a linking or timing group and m is 0, 1 or 2; andR1 and R2 independently represents an aliphatic, aromatic or heterocyclic group, or R1 and R2 together with the nitrogen to which they are attached represent the atoms necessary to form a 5 or 6 membered ring or multiple ring system, or R1 and R2 are independently a —C(═O)(LINK)m—INH group, or are substituted with an —NR3aC(═O)—(LINK)m—INH group, with R3a being defined the same as R1 or R2; and wherein the compound of Formula 1 does not substantially react with oxidized developer to release INH; and a reductone compound represented by Formula 2 wherein R7 and R8 are the same or different, and may represent H, alkyl, cycloalkyl, aryl, or an alkyl group with a solubilizing group such as —OH, sulfonamide, sulfamoyl, or carbamoyl, R7 and R8 may be joined to complete a heterocyclic ring, R4 and R5 are H, OH, alkyl, aryl, cycloalkyl, or may together re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.