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    • 4. 发明授权
    • Silver halide photographic light-sensitive material
    • 卤化银照相感光材料
    • US06641987B2
    • 2003-11-04
    • US09820010
    • 2001-03-29
    • Yoichi SugaHideto IkomaJun Okamoto
    • Yoichi SugaHideto IkomaJun Okamoto
    • G03C146
    • G03C1/46G03C1/0051G03C1/08G03C1/09G03C7/30G03C7/3022G03C7/3041G03C2001/0056G03C2001/097G03C2003/006
    • Disclosed is a silver halide color photographic light-sensitive material including at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer on a support, and having an ISO sensitivity of 640 or more, wherein the material exhibits a color saturation evaluation value &eegr;, represented by equation (I) below, of −15 dB or more. &eegr;=10 log(1/VT) [VT=(⅙)×((62−Y1)2+(62−Y2)2+(62−Y3)2+(62−Y4)2+(62−Y5)2+(62−Y6)2)]  (I) In Formula (I), each of Y1 to Y6 is a value obtained by exposing 12 colors of a Macbeth color chart with six exposure amounts, from −1 under to +4 over, measuring the saturation of each resultant color, and averaging the data (chroma values) for a corresponding exposure amount.
    • 公开了一种卤化银彩色照相感光材料,其包括至少一种感红卤化银乳剂层,至少一种感绿卤化银乳剂层和至少一种蓝色感光卤化银乳剂层, 具有640或更大的ISO感光度,其中该材料表现出由下式(I)表示的色彩饱和度评估值eta为-15dB或更大。在式(I)中,Y1至Y6中的每一个为获得的值 通过曝光12种颜色的六种曝光量的Macbeth色彩图,从-1到+4以下,测量每种颜色的饱和度,并对相应曝光量的数据(色度值)进行平均。
    • 6. 发明授权
    • Silver halide photographic light-sensitive material
    • 卤化银照相感光材料
    • US6010842A
    • 2000-01-04
    • US921359
    • 1997-08-29
    • Yoichi SugaMasato Taniguchi
    • Yoichi SugaMasato Taniguchi
    • G03C7/00G03C1/08G03C1/12G03C1/34G03C7/392G03C1/33
    • G03C1/12G03C7/39296G03C1/08G03C7/39236G03C7/39256G03C7/39292
    • A silver halide photographic light-sensitive material has at least one light-sensitive silver halide emulsion layer on a support, wherein a light-sensitive silver halide emulsion in the emulsion layer contains a compound represented by formula (I) below and a compound represented by formula (II) below. ##STR1## In formula (I), each of R.sub.1 to R.sub.3 represents a hydrogen atom, an alkyl group, or an aryl group. ##STR2## In formula (II), R represents a specific alkyl group, each of L.sub.1 and L.sub.2 represents a methine group, p.sub.1 represents 0 or 1, Z.sub.1 represents atoms required to form a 5- or 6-membered nitrogen-containing heterocyclic ring, M.sub.1 represents a charge-balancing counter ion, m.sub.1 represents a number from 0 to 10 required to neutralize electric charge of a molecule, and Q represents a methine group or a polymethine group substituted by a heterocyclic group or an aromatic group.
    • 卤化银照相感光材料在载体上具有至少一种感光卤化银乳剂层,其中乳剂层中的感光卤化银乳剂含有下式(I)表示的化合物和由 下式(II)。 在式(I)中,R 1至R 3各自表示氢原子,烷基或芳基。 式(II)中,R表示特定的烷基,L1和L2各自表示次甲基,p1表示0或1,Z1表示形成5元或6元含氮杂环所需的原子,M1表示 电荷平衡反离子,m1表示中和分子电荷所需的0〜10的数,Q表示被杂环基或芳香族基取代的次甲基或多元胺基。
    • 8. 发明授权
    • Silver halide photographic material
    • 卤化银照相材料
    • US5057409A
    • 1991-10-15
    • US264554
    • 1988-10-31
    • Yoichi Suga
    • Yoichi Suga
    • G03C1/035G03C1/005G03C1/16G03C1/18G03C1/46
    • G03C1/0051G03C1/16G03C1/18G03C1/46G03C2001/0055G03C2001/0058G03C2001/03529G03C2001/03535
    • A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer comprises a silver halide emulsion which satisfies condition (i) and wherein the silver halide emulsion layer or another silver halide emulsion layer having the same color sensitivity as that of the silver halide emulsion layer comprises a silver halide emulsion which satisfies condition (ii):Condition (i): tabular grains having at least two twinning planes, a diameter of at least 0.15 .mu.m and an average aspect ratio of at least 2 account for at least 70% of silver halide grains as calculated in terms of projected area and grains having a (b/a) ratio of at least 5 wherein (a) is the longest distance between the two or more parallel twinning planes and (b) is the grain thickness account for at least 50% of the tabular grains by number;Condition (ii): grains having a diameter of at least 0.15 .mu.m and an average aspect ratio of less than 2 account for at least 70% of silver halide grains as calculated in terms of projected area.
    • 一种卤化银照相材料,包括其上具有至少一个卤化银乳剂层的载体,其中所述卤化银乳剂层包含满足条件(ⅰ)的卤化银乳剂,其中所述卤化银乳剂层或其它卤化银乳剂层具有 与卤化银乳剂层相同的颜色敏感度包含满足条件(ii)的卤化银乳剂:条件(i):具有至少两个孪晶平面的平片状颗粒,至少0.15μm的直径和平均纵横比 至少为2,考虑到投影面积计算的至少70%的卤化银颗粒和(b / a)比至少为5的颗粒,其中(a)是两个或更多个平行配对之间的最长距离 平面和(b)根据数量,颗粒厚度至少占片状颗粒的50%; 条件(ii):根据投影面积计算,直径至少为0.15μm,平均纵横比小于2的晶粒占至少70%的卤化银颗粒。