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    • 3. 发明授权
    • Silver halide emulsion, method of preparing the same and silver halide photosensitive material using the same
    • 卤化银乳剂,其制备方法和使用其的卤化银感光材料
    • US07238467B2
    • 2007-07-03
    • US10893885
    • 2004-07-20
    • Tadashi IkedaYasushi TanabeHiroshi KawakamiTakeshi Suzumoto
    • Tadashi IkedaYasushi TanabeHiroshi KawakamiTakeshi Suzumoto
    • G03C1/005G03C1/494
    • G03C1/29G03C1/005
    • A silver halide emulsion comprising silver halide grains covered with two dye layers in combination. The two dye layers comprises an inner dye layer adjoining to the silver halide grain, and containing at least one sensitizing dye capable of spectrally sensitizing silver halide, and an outer dye layer adjoining to the inner dye layer, and containing at least two dyes. The light absorption energy of the outer dye layer is equal to or higher than that of the inner dye layer, an energy-releasing wavelength of the outer dye layer overlaps with an energy-absorbing wavelength of the inner dye layer, the sensitizing dyes constituting the inner dye layer include an anion and/or betaine dyes, the dyes constituting the outer dye layer include an anion and cation dyes, and the anion dye is more than the cation dye in terms of an addition amount and/or an adsorption amount.
    • 包含卤化银颗粒的卤化银乳剂,其组合覆盖有两个染料层。 两个染料层包括与卤化银颗粒相邻的内部染料层,并且含有至少一种能够使卤化银光谱增感的敏化染料和与内部染料层相邻的外部染料层,并含有至少两种染料。 外染料层的光吸收能量等于或高于内染料层的光吸收能量,外染料层的能量释放波长与内染料层的能量吸收波长重叠,感光染料构成 内染料层包括阴离子和/或甜菜碱染料,构成外部染料层的染料包括阴离子和阳离子染料,阴离子染料的添加量和/或吸附量大于阳离子染料。