EP 0809140 B1 20020116 - Colour photographic recording material having increased sensitivity and improved colour reproduction
Title (en)
Colour photographic recording material having increased sensitivity and improved colour reproduction
Title (de)
Farbfotografisches Aufzeichnungsmaterial mit erhöhter Empfindlichkeit und verbesserter Farbwiedergabe
Title (fr)
Matériau photographique couleur d'enregistrement ayant une sensibilité plus élevée et reproduction des couleurs améliorée
Publication
Application
Priority
- DE 19618087 A 19960506
- DE 19704372 A 19970206
Abstract (en)
[origin: US5856076A] A color photographic recording material having a film support and, arranged thereon, at least one red-sensitive silver halide emulsion layer containing a cyan coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, at least one blue-sensitive silver halide emulsion layer containing a yellow coupler and optionally further non-photosensitive layers contains, in addition to conventional sensitizing dyes, in at least one of the red-sensitive silver halide emulsion layers thereof and in at least one of the green-sensitive emulsion layers thereof at least one cyanine dye in each layer having an absorption maximum in a methanolic solution in the range from 515 to 550 nm, wherein the absorption maxima of the additional cyanine dye in the red-sensitive silver halide emulsion layer and of the additional cyanine dye in the green-sensitive layer, in each case measured in a methanolic solution, are no more than 10 nm and preferably no more than 5 nm apart. In a preferred embodiment, the additional cyanine dye in the red-sensitive silver halide emulsion layer is identical to the additional cyanine dye in the green-sensitive silver halide emulsion layer. The recording material exhibits improved sensitivity and improved color reproduction.
IPC 1-7
IPC 8 full level
G03C 7/00 (2006.01); G03C 1/18 (2006.01); G03C 7/20 (2006.01); G03C 7/30 (2006.01)
CPC (source: EP US)
G03C 7/3041 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 5856076 A 19990105; EP 0809140 A1 19971126; EP 0809140 B1 20020116; JP H1078637 A 19980324
DOCDB simple family (application)
US 84107397 A 19970429; EP 97106699 A 19970423; JP 12779097 A 19970502