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    • 2. 发明授权
    • Silver halide photographic emulsion
    • 卤化银照相乳剂
    • US4818676A
    • 1989-04-04
    • US905449
    • 1986-09-10
    • Susumu BabaEigi MatsubaraKatsuaki IwaosaAkira Tanaka
    • Susumu BabaEigi MatsubaraKatsuaki IwaosaAkira Tanaka
    • G03C1/29G03C1/19
    • G03C1/29
    • Disclosed is a silver halide photographic emulsion supersensitized with at least two sensitizing dyes selected from those represented by the following general formula [I], [II] and [III]:General formula [I]: ##STR1## wherein R.sub.1 represents an unsubstituted or substituted alkyl group, R.sub.2 represents a sulfoalkyl group or a sulfoaralkyl group, and R.sub.3 represents an alkyl group, and W.sub.1 and W.sub.2 represent each an alkylene group;General formula [II]: ##STR2## wherein W.sub.3 to W.sub.6 represent each an alkyl group, an alkoxy group, or hydroxyl group, R.sub.4 represents an unsubstituted or substituted alkyl group, R.sub.5 represents a sulfoalkyl group or a sulfoaralkyl group, and R.sub.6 represents an alkyl group;General formula [III]: ##STR3## wherein R.sub.7 represents an unsubstituted or substituted alkyl group, R.sub.8 represents a sulfoalkyl group or a sulfoaralkyl group, R.sub.9 represents an alkyl group, and W.sub.7 and W.sub.8 represent each an alkyl group, an alkoxy group, or hydroxyl group.
    • 公开了用至少两种选自以下通式[I],[II]和[III]表示的敏化染料进行超敏化的卤化银照相乳剂:通式[I]:其中R 1表示未取代或未取代的 取代的烷基,R 2表示磺基烷基或磺基烷基,R 3表示烷基,W 1和W 2表示亚烷基。 通式[II]:< IMAGE>其中,W3至W6表示烷基,烷氧基或羟基,R4表示未取代或取代的烷基,R5表示磺基烷基或磺基烷基,R6表示 烷基; 通式[III]:其中R7表示未取代或取代的烷基,R8表示磺基烷基或磺基烷基,R9表示烷基,W7和W8各自表示烷基,烷氧基或 羟基。
    • 6. 发明授权
    • Silver halide photographic emulsion
    • 卤化银照相乳剂
    • US4666827A
    • 1987-05-19
    • US755310
    • 1985-07-15
    • Seiichi SumiKatsuaki Iwaosa
    • Seiichi SumiKatsuaki Iwaosa
    • G03C1/005G03C1/36
    • G03C1/005
    • Disclosed is a negative fine grain silver halide photographic emulsion capable of afford hard tone and high D.sub.max and have a markedly higher sensitivity than convertional roomlight handlable light-sensitive materials and free from defects such as fogging and decrease in sensitivity under roomlight conditions. This emulsion contains at least 70 mol % of silver chloride and an organic desensitizer which has an anodic polarographic potential and a cathodic polarographic potential which when added together give a positive sum, the amount of said organic desensitizer being such that necessary to reduce the sensitivity of said emulsion by not more than log E=1.3 (log E=1.0 in the case of silver chloride). This emulsion may further contain a rhodium salt.
    • 公开了能够提供硬色调和高Dmax的负微粒卤化银照相乳剂,并且具有比转化室灯可手动感光材料显着更高的灵敏度,并且在室温条件下没有诸如雾化和降低灵敏度的缺陷。 该乳液含有至少70mol%的氯化银和有机脱敏剂,其具有阳极极谱电位和阴极极谱电位,当加在一起时产生正和值,所述有机脱敏剂的量必须降低敏感性 所述乳液不超过log E = 1.3(在氯化银的情况下log E = 1.0)。 该乳液还可以含有铑盐。