Global Patent Index - EP 1006401 A2

EP 1006401 A2 2000-06-07 - Silver halide emulsion having improved sensitometric characteristics

Title (en)

Silver halide emulsion having improved sensitometric characteristics

Title (de)

Silberhalogenidemulsion mit verbesserter sensitometrischer Charakteristik

Title (fr)

Emulsion à l'halogènure d'argent ayant une caractéristique sensitométrique améliorée

Publication

EP 1006401 A2 (EN)

Application

EP 99203544 A

Priority

  • EP 99203544 A
  • EP 98204079 A

Abstract (en)

A photosensitive silver halide emulsion has been disclosed, containing tabular silver halide grains present in a numerical amount of at least 50 %, said tabular grains having an average aspect ratio of at least 1.2, an average equivalent circular grain diameter of at least 0.1 mu m and an average grain thickness of less than 0.3 mu m, characterized in that said grains further include an organic hole trapping dopant. In a particular embodiment said photosensitive silver halide emulsion is containing tabular silver halide grains having a core and an outermost shell, wherein said outermost shell of the grains includes an organic hole trapping dopant satisfying formula (I): <CHEM> wherein X and Y each independently represent O, S or Se; R<1> and R<2> each independently represents and R represents hydrogen, a substituted or unsubstituted alkyl, a substituted or unsubstituted aryl, a substituted or unsubstituted aralkyl a substituted or unsubstituted heteroaryl; wherein R<1> and R<2> can be the same or different and may form a ring; E represents a group linked to the carbon atom by a heteroatom, having at least one free electron pair; M<+> is a proton or an inorganic or organic counterion; m and n each represents an integer wherein m equals 1 and n equals 1 or 2.

IPC 1-7 (main, further and additional classification)

G03C 1/005; G03C 1/07; G03C 1/498

IPC 8 full level (invention and additional information)

G03C 1/005 (2006.01); G03C 1/07 (2006.01); G03C 1/498 (2006.01)

CPC (invention and additional information)

G03C 1/0051 (2013.01); G03C 1/07 (2013.01); G03C 1/49818 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1006401 A2 20000607

INPADOC legal status


2004-11-10 [18W] WITHDRAWN

- Effective date: 20040920

2002-02-20 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: AGFA-GEVAERT

2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-06-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI