EP 1168065 A1 20020102 - Light-sensitive silver halide photographic material for forming direct-positive images and method for making same
Title (en)
Light-sensitive silver halide photographic material for forming direct-positive images and method for making same
Title (de)
Lichtempfindliches photographisches Silberhalogenidmaterial für die Erzeugung direktpositiver Bilder und Verfahren dafür
Title (fr)
Matériau photographique à l'halogénure d'argent pour l'enregistrement d'images positives directes et procédé d'enregistrement des images
Publication
Application
Priority
- EP 01000147 A 20010516
- EP 00201998 A 20000606
Abstract (en)
A photographic material has been disclosed, wherein said material is a black-and-white silver halide photographic material coated on a support with at least one light-sensitive emulsion layer, comprising a spectrally sensitized prefogged direct-positive silver halide emulsion, providing peak absorption in the wavelength range from 600 nm up to 700 nm, wherein said emulsion comprises a binder and core-shell emulsion crystals having silver bromide in a total amount of at least 80 mole%, further having, in a shell of said core-shell emulsion crystals, silver iodide in a range from 0.5 up to 20 mole%, based on silver, said shell representing less than 50 mole%, and, more preferably not more than 25 mole%, of all silver precipitated, characterized in that said emulsion is spectrally sensitized with a combination of a desensitizing dye having an absorption maximum wavelength in a range from 600 nm up to 700 nm, if present as a sole dye in said emulsion, and at least one azacyanine dye having an absorption maximum at a more hypsochromic wavelength.
IPC 1-7
IPC 8 full level
G03C 1/12 (2006.01); G03C 1/485 (2006.01)
CPC (source: EP)
G03C 1/122 (2013.01); G03C 1/4853 (2013.01)
Citation (search report)
- [A] US 4059450 A 19771122 - VANASSCHE WILLY JOSEPH, et al
- [A] US 3759713 A 19730918 - FLORENS R, et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01000147 A 20010516