Global Patent Index - EP 1422557 A1

EP 1422557 A1 20040526 - Mammography film and imaging assembly for use with rhodium or tungsten anodes

Title (en)

Mammography film and imaging assembly for use with rhodium or tungsten anodes

Title (de)

Mammographischer Film und Bildaufzeichnungskombination zur Verwendung mit Rhodium- oder Wolframanoden

Title (fr)

Pellicule mammographique et assemblage pour la formation d' images pour emploi avec anodes de rhodium ou tungstène

Publication

EP 1422557 A1 20040526 (EN)

Application

EP 03078511 A 20031107

Priority

  • US 29976502 A 20021119
  • US 29994102 A 20021119
  • US 29975902 A 20021119

Abstract (en)

A radiographic silver halide film comprises a cubic grain silver halide emulsion layer on one side of the support and a tabular grain silver halide emulsion layer on the other side. The cubic grain silver halide emulsion layer comprises a combination of first and second spectral sensitizing dyes that provides a combined maximum J-aggregate absorption on the cubic silver halide grains of from 540 to 560 nm. The first spectral sensitizing dye is an anionic benzimidazole-benzoxazole carbocyanine, the second spectral sensitizing dye is an anionic oxycarbocyanine. The cubic grain silver halide emulsion layer also includes a mixture of gelatin or a gelatin derivative and a second hydrophilic binder other than gelatin or a gelatin derivative at a weight ratio of first to second hydrophilic binder of from 2:1 to 5: 1. The cubic silver halide grains comprise from 1 to 20 mol % chloride and from 0.25 to 1.5 mol % iodide, which cubic silver halide grains have an average ECD of from 0.65 to 0.8 mu m. Moreover, the cubic silver halide grains are doped with a hexacoordination complex compound within part or all of the innermost 95% of the grains. These films can be exposed to provide a black-and-white image having a d( gamma )/d(log E) value greater than 5 and are particularly useful when imaged using X-radiation generating devices comprising rhodium or tungsten anodes. <IMAGE>

IPC 1-7

G03C 5/16; G03C 5/17

IPC 8 full level

G03C 1/00 (2006.01); G03C 1/035 (2006.01); G03C 1/047 (2006.01); G03C 1/09 (2006.01); G03C 1/22 (2006.01); G03C 1/30 (2006.01); G03C 1/46 (2006.01); G03C 1/795 (2006.01); G03C 5/16 (2006.01); G03C 5/17 (2006.01); G03C 5/26 (2006.01); G03C 1/04 (2006.01); G03C 1/08 (2006.01); G03C 1/18 (2006.01); G03C 1/29 (2006.01)

CPC (source: EP)

G03C 5/16 (2013.01); G03C 5/17 (2013.01); G03C 1/0051 (2013.01); G03C 1/04 (2013.01); G03C 1/08 (2013.01); G03C 1/18 (2013.01); G03C 1/29 (2013.01); G03C 1/46 (2013.01); G03C 5/26 (2013.01); G03C 2001/03541 (2013.01); G03C 2001/03594 (2013.01); G03C 2200/52 (2013.01); G03C 2200/58 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE FR

DOCDB simple family (publication)

EP 1422557 A1 20040526; EP 1422557 B1 20060823; DE 60307764 D1 20061005; DE 60307764 T2 20070823; JP 2004170987 A 20040617

DOCDB simple family (application)

EP 03078511 A 20031107; DE 60307764 T 20031107; JP 2003388144 A 20031118