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    • 33. 发明公开
    • Photographic element with excellent speed differential for digital and optical exposure devices
    • Photographisches Element mit hervorragendem Empfindlichkeitsdifferentialfürdigitale und optische Belichtungsvorrichtungen
    • EP1094363A2
    • 2001-04-25
    • EP00203506.1
    • 2000-10-10
    • EASTMAN KODAK COMPANY
    • Ferguson, Pamela McCue, c/o Eastman Kodak CompanyDiehl, Donald Richard, c/o Eastman Kodak Company
    • G03C1/83G03C1/12G03C1/29G03C1/40G03C1/08
    • G03C1/832G03C1/08G03C1/09G03C1/127G03C2001/093
    • An imaging element comprising at least one silver halide emulsion wherein the silver halide emulsion grains incorporate dopant (i) which comprises a hexacoordination metal complex which satisfies the formula

              [ML 6 ] n



      wherein n is zero, -1, -2, -3 or -4; M is a filled frontier orbital polyvalent metal ion, other than iridium; and L 6 represents bridging ligands which can be independently selected, provided that least four of the ligands are anionic ligands, and at least one of the ligands is a cyano ligand or a ligand more electronegative than a cyano ligand;
      and wherein the emulsion has been spectrally sensitized with a sensitizing dye and contains a filter dye that

      (a) has a wavelength of absorbance maximum which is less than about 15 nm different than the maximum wavelength of emulsion sensitivity provided by the spectral sensitizing dye, and
      (b) has a half band width that is approximately equal to the half bandwidth of the sensitizing dye,
      thereby resulting in an emulsion which has a sensitivity at a wavelength of about 50 nm shorter than the maximum wavelength of sensitization which is about 65% or greater of the emulsion speed at the maximum wavelength of spectral sensitivity.
    • 一种成像元件,其包括至少一种卤化银乳剂,其中所述卤化银乳剂颗粒包含掺杂剂(i),所述掺杂剂包含满足下式的六配位金属络合物:其中n为0,-1,-2,-3或 - 4; M是除铱之外的填充边界轨道多价金属离子; 并且L6表示可以独立选择的桥连配体,条件是至少四种配体是阴离子配体,并且至少一种配体是氰基配体或者比氰基配体更具有负电性的配体; 并且其中所述乳液已经用敏化染料进行光谱增感,并且包含过滤染料,其(a)具有与由所述光谱增感染料提供的乳液敏感度的最大波长不同的小于约15nm的吸光度最大值的波长,以及 (b)具有大致等于敏化染料的半带宽的半带宽度,从而得到在大约50nm的波长处的敏感度比感光的最大波长短约为65%的乳液,或 较大的乳化速度在最大波长的光谱灵敏度。