EP 1103848 A1 20010530 - Light-sensitive silver halide photographic film material and radiographic intensifying screen-film combination
Title (en)
Light-sensitive silver halide photographic film material and radiographic intensifying screen-film combination
Title (de)
Lichtempfindliches photographisches Silberhalogenidfilmmaterial und eine Kombination eines radiographischen Verstärkungsschirms mit diesem Film
Title (fr)
Film photographique à l'halogénure d'argent sensible à la lumière et une structure radiographique combinant le film et un écran intensificateur
Publication
Application
Priority
- EP 00203917 A 20001107
- EP 99204009 A 19991126
Abstract (en)
A light-sensitive silver halide photographic film material has been provided, said film material comprising a transparent support and on both sides thereof at least one light-sensitive emulsion layer having spectrally and chemically sensitized tabular silver halide grains rich in silver bromide, further having silver iodide in an amount of less than 3 mole % based on silver, with two flat parallel ä111ü crystal faces, said grains accounting for a total projective surface of said parallel crystal faces in said emulsion of at least 50 %, further having an average aspect ratio of at least 2:1, a grain thickness of from 0.05 up to 0.15 mu m, a site-directing azacyanine compound satisfying the general formulae disclosed herein in an amount of not less than 1 x 10<-4> mole per mole of silver halide coated and one or more J-aggregating spectrally sensitizing dye(s), wherein a molar ratio amount between said site directing compound and said J-aggregating spectrally sensitizing dye(s) is at least 1:6 for a grain coverage of said ä111ü tabular grains exceeding 50 %. A radiographic screen/film combination has also been described comprising said light-sensitive silver halide photographic film material and two supporting or self-supporting X-ray intensifying screens)comprising luminescent phosphors, wherein by contacting the film material with a sandwich of a pair of said intensifying screens and exposing said combination to X-rays, emission of radiation by said luminescent phosphors in the wavelength range for which said material has been made spectrally sensitive provides a black-and-white diagnostic image after processing of said exposed radiographic film material.
IPC 1-7
IPC 8 full level
G03C 1/07 (2006.01); G03C 1/12 (2006.01); G03C 5/16 (2006.01); G03C 1/005 (2006.01); G03C 1/18 (2006.01); G03C 5/17 (2006.01)
CPC (source: EP)
G03C 1/07 (2013.01); G03C 1/122 (2013.01); G03C 5/16 (2013.01); G03C 1/0051 (2013.01); G03C 1/18 (2013.01); G03C 5/17 (2013.01); G03C 2001/0055 (2013.01); G03C 2001/03511 (2013.01); G03C 2005/168 (2013.01); G03C 2007/3025 (2013.01); G03C 2200/03 (2013.01)
Citation (search report)
- [A] EP 0890873 A1 19990113 - AGFA GEVAERT NV [BE]
- [A] EP 0953867 A1 19991103 - AGFA GEVAERT NV [BE]
- [A] EP 0345483 A2 19891213 - MINNESOTA MINING & MFG [US]
- [A] DATABASE WPI Section Ch Week 199841, Derwent World Patents Index; Class E23, AN 1998-471434, XP002137920
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00203917 A 20001107