公开(公告)号：EP0929840B1

公开(公告)日：2004-02-18

申请号：EP98936924.4

申请日：1998-07-20

申请人： EASTMAN KODAK COMPANY

发明人： GOULD, Ian, Robert ,  FARID, Samir, Yacoub ,  GODLESKI, Stephen, A. ,  LENHARD, Jerome, Robert ,  MUENTER, Annabel, Adams ,  ZIELINSKI, Paul, Anthony

IPC分类号： G03C1/10 ,  G03C1/12

CPC分类号： G03C1/12 ,  G03C1/10 ,  G03C1/28 ,  G03C1/29 ,  G03C2200/24 ,  G03C2200/34

摘要： This invention comprises a photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula X-H, wherein X is an electron donor moiety to which a base, B-, is covalently linked and H is a leaving hydrogen atom, and wherein: 1) X-H has an oxidation potential between 0 and about 1.4 V; and 2) the oxidized form of X-H undergoes deprotonation reaction with the base B-, to give the radical X. and the protonated base B-H. In a preferred embodiment of the invention, the radical X. has an oxidation potential

公开(公告)号：EP0929840A1

公开(公告)日：1999-07-21

申请号：EP98936924.0

申请日：1998-07-20

申请人： EASTMAN KODAK COMPANY

发明人： GOULD, Ian, Robert ,  FARID, Samir, Yacoub ,  GODLESKI, Stephen, A. ,  LENHARD, Jerome, Robert ,  MUENTER, Annabel, Adams ,  ZIELINSKI, Paul, Anthony

IPC分类号： G03C1

CPC分类号： G03C1/12 ,  G03C1/10 ,  G03C1/28 ,  G03C1/29 ,  G03C2200/24 ,  G03C2200/34

摘要： This invention comprises a photographic element comprising at least one silver halide emulsion layer in which the silver halide is sensitized with a compound of the formula X-H, wherein X is an electron donor moiety to which a base, B-, is covalently linked and H is a leaving hydrogen atom, and wherein: 1) X-H has an oxidation potential between 0 and about 1.4 V; and 2) the oxidized form of X-H undergoes deprotonation reaction with the base B-, to give the radical X. and the protonated base B-H. In a preferred embodiment of the invention, the radical X. has an oxidation potential