Silver halide element with improved high temperature storage and reduced thickness
US6440655B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Jun 13, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2007/3027
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide photographic element comprising at least one silver halide emulsion layer containing a dye-forming coupler which reacts with an oxidized color developing agent to form dye, said silver halide element further comprising a polyester support and an amido compound of Formula I wherein INH is a development inhibitor;LINK is a linking or timing group and m is 0, 1 or 2;R1 and R2 independently represent 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 I does not substantially react with oxidized developer to release INH.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.