Patent · US Expired

Color photographic silver halide material

US6077657A · kind A · utility

0Cited by
2References
17Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 30, 1999
Grant dateJun 20, 2000
Priority date
Expiry dateJun 30, 2019

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03C7/3926
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A color photographic silver halide material having a support and at least one silver halide emulsion layer containing couplers, which layer contains as couplers a 2-equivalent magenta coupler and both at least one compound of the formula (III) and at least one compound of the formula (IV): ##STR1## in which R.sub.4 means H, alkoxy or alkylmercapto, PA1 R.sub.5 means alkyl, halogen or R.sub.4, PA1 R.sub.7 means OH, NHCHO, NHCONH-alkyl, CO-alkyl, COOH, COO-alkyl, CONH.sub.2, SO.sub.3 H, SO.sub.2 NH-alkyl, CH.sub.2 CH.sub.2 COOH and PA1 R.sub.7 means H, alkyl, halogen, OH or alkoxy is distinguished by improved pressure sensitivity.

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