Patent · US Expired

Color photographic recording material

US5441857A · kind A · utility

3Cited by

10References

8Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Heinrich Odenwalder · Leverkusen, DE
Peter Bell · Neunburg vorm Wald, DE
Johannes Willsau · Leverkusen, DE

Key dates

Filing date	Oct 27, 1994
Grant date	Aug 15, 1995
Priority date	—
Expiry date	Oct 27, 2014

Classification

Technology area (CPC G)Physics
CPC primaryG03C7/30541
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Color photographic silver halide material of the negative type, in which at least one silver halide emulsion layer contains a compound of the formula EQU A-B-(T.sub.1).sub.m -(COUP-D)-(T.sub.2).sub.n (I), wherein PA1 A represents a ballast group, PA1 B represents the radical of a compound which reacts to release (T.sub.1).sub.m -(COUP-D)-(T.sub.2).sub.n during development, PA1 T.sub.1 and T.sub.2 represent time-regulating units which can be released during development, PA1 m, n are 0 or 1, PA1 COUP represents the radical from a 4-equivalent coupler and PA1 D represents a group with an affinity for silver, distinguished by improved sensitivity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.