EP 1079270 A1 20010228 - Tabular internal-latent-image-type direct positive silver halide emulsion, and color diffusion transfer light-sensitive material using the same
Title (en)
Tabular internal-latent-image-type direct positive silver halide emulsion, and color diffusion transfer light-sensitive material using the same
Title (de)
Tafelförmige Direkt-positive Innenlatentbild-Silberhalogenidemulsion und lichtempfindliches Farbdiffusionsübertragungsmaterial, das diese enthält
Title (fr)
Emulsion à l'halogénure d'argent tabulaire directement positive formant image latente interne,et matériau couleur diffusion transfert sensible à la lumière utilisant celle-ci
Publication
Application
Priority
JP 23480199 A 19990820
Abstract (en)
Disclosed is a tabular internal-latent-image-type direct positive silver halide emulsion that comprises core/shell-type silver halide particles in which the average particle diameter is 0.3 mu m or more, the average ratio of the particle diameter/particle thickness of each particle is 2 or more and the ratio (in area) occupied by tabular particles (the ratio of the particle diameter/the particle thickness is from 2 to 100) is 50% or more, wherein at least one metal complex of the formula (I) is contained as a localized phase in a region containing 0.1 to 90 mol% of the amount of silver contained in the shell portion: M(CN)6-aLa<n-> wherein N is Fe, Ru, Ir, Co, Cr, Mn, Rh, Re or Os, a is 0, 1 or 2, L is a ligand other than CN, and n is 2, 3 or 4. The silver halide emulsion is high in sensitivity, allows the low-density portion on an reversal characteristic curve to be high in contrast and is low in re-reversal negative sensitivity. A color diffusion transfer light-sensitive material using the silver halide emulsion is also disclosed.
IPC 1-7
IPC 8 full level
G03C 1/035 (2006.01); G03C 1/09 (2006.01); G03C 1/485 (2006.01); G03C 8/08 (2006.01); G03C 1/005 (2006.01); G03C 1/08 (2006.01)
CPC (source: EP)
G03C 1/48576 (2013.01); G03C 8/08 (2013.01); G03C 1/0051 (2013.01); G03C 1/08 (2013.01); G03C 1/485 (2013.01); G03C 2001/0156 (2013.01); G03C 2001/03535 (2013.01)
Citation (search report)
- [Y] EP 0573066 A1 19931208 - FUJI PHOTO FILM CO LTD [JP] & JP H0651423 A 19940225 - FUJI PHOTO FILM CO LTD
- [Y] JP H04278940 A 19921005 - FUJI PHOTO FILM CO LTD
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1079270 A1 20010228; EP 1079270 B1 20060510; AT E326027 T1 20060615; DE 60027827 D1 20060614; DE 60027827 T2 20070426; JP 2001056520 A 20010227
DOCDB simple family (application)
EP 00117314 A 20000818; AT 00117314 T 20000818; DE 60027827 T 20000818; JP 23480199 A 19990820