Photographic element having improved dye stability, compound, and imaging process

US6291152A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Paul A. Burns · Rochester, US
• Robert F. Romanet · Rochester, US
• Susan M. Fischer · Rochester, US
• David G. Lincoln · Webster, US
• Paul P. Spara · Fairport, US

Key dates

• Filing date: Nov 7, 2000
• Grant date: Sep 18, 2001
• Expiry date: Nov 7, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C7/3212
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a bicyclic azole dye-forming coupler, having appended to a ring carbon at a non-coupling position thereof a substituent group represented by the formula: ##STR1## PA1 wherein the arrow represents the point of attachment of the substituent group to a non-coupling position of the coupler; PA1 R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently selected hydrogen or substituent groups, provided that any two of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may join to form a ring; PA1 R.sup.a and R.sup.b are independently hydrogen or a substituent; PA1 each R.sup.c and R.sup.d is an independently selected hydrogen or an alkyl or aryl group, provided that any two of them may join to form a ring and n is 1 to 10; PA1 R.sup.e is hydrogen or an alkyl or aryl group; PA1 each Y is an independently selected substituent group and m is from 0 to 4; and PA1 Z is a substituent selected from the group consisting of --C(O)R.sup.5, --S(O).sub.2 R.sup.5, --SOR.sup.5, --P(.dbd.O)(R.sup.6).sub.2 and --P(.dbd.O)(OR.sup.6).sub.2 in which R.sup.5 is selected from the group consisting of alk…