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    • 1. 发明授权
    • Radiographic image forming method
    • 射线照相成像方法
    • US5834153A
    • 1998-11-10
    • US746740
    • 1996-11-15
    • Takuji HasegawaHiromu Ohara
    • Takuji HasegawaHiromu Ohara
    • G03C1/00G03C1/46G03C5/17G21K4/00
    • G03C5/17G21K4/00G21K2004/06Y10S430/167
    • A radiographic image forming method is disclosed. The method comprises the steps of (1) interposing a silver halide photographic material which comprises a support having a silver halide emulsion layer on each of both sides the support and has a cross-over value of not more than 15%, between two sheets of an intensifying screen comprising a support and a fluorescent layer composed of plural fluorescent sub-layers and a protect layer provided on the support in this order from the support, in which the fluorescent sub-layers each comprises a binder and particles of a fluorescent substance having the average particle size R and the standard deviation .sigma. of the particle size distribution satisfying a relation of 0
    • 公开了放射线图像形成方法。 该方法包括以下步骤:(1)插入卤化银照相材料,该材料包括在支撑体的两侧各自具有卤化银乳剂层的载体,并且具有不超过15%的交叉值,两片 增强屏幕包括支撑体和由多个荧光子层组成的荧光层和从支撑体依次设置在支撑体上的保护层,其中荧光子层各自包含粘合剂和具有荧光物质的颗粒, 平均粒径R和满足0
    • 2. 发明授权
    • Silver halide light-sensitive photographic material
    • 卤化银感光感光材料
    • US4990439A
    • 1991-02-05
    • US388167
    • 1989-08-01
    • Kazuyoshi GoanTakuji Hasegawa
    • Kazuyoshi GoanTakuji Hasegawa
    • G03C1/015G03C1/047G03C1/30
    • G03C1/30G03C1/015G03C1/047
    • A silver halide light-sensitive photographic material having a support and provided thereon, hydrophlic colloidal layers including at least one silver halide light-sensitive emulsion layer is disclosed. The silver halide emulsion layer comprises a silver halide emulsion (I) prepared by adding a high-molecular flocculant under at least one of Conditions (1) through (3) to a silver halaide emulsion (II) prepared by a water-soluble silver salt solution and a water-soluble halide solution to a protevtive colloid solution so as to flocculate and settle a silver halide grain together with a protective colloid for desalting of dissolved substances, and by dispersing again the desalted silver halide emulsion in a protective colloid solution;Condition (1): a temperature of the silver halide emulsion (II) is not lower than 30.degree. C. in adding a high-molecular flocculant,Condition (2): pH and pAg of the silver halide emulsion (II) are not lower than 2 and not lower than 5, respectively, in adding a high-molecular flocculant, andCondition (3): a concentration of a silver halide grain contained in the silver halide emulsion (II) is not less than 20% by weight in adding a high-molecular flocculant.
    • 公开了一种具有支撑体并设置在其上的卤化银感光性感光材料,含有至少一种卤化银感光乳剂层的亲水胶体层。 卤化银乳剂层包括通过将条件(1)至(3)中的至少一种的高分子絮凝剂加入到通过水溶性银盐制备的卤化银乳剂(II)中制备的卤化银乳剂(I) 溶液和水溶性卤化物溶液加入到蛋白质胶体溶液中,以使卤化银颗粒与用于脱盐溶解物质的保护胶体一起絮凝和沉淀,并再次将脱盐的卤化银乳剂分散在保护胶体溶液中; 条件(1):添加高分子絮凝剂时,卤化银乳剂(II)的温度不低于30℃条件(2):卤化银乳剂(II)的pH和pAg不低于 在添加高分子絮凝剂时分别为2以上且不低于5,条件(3):卤化银乳剂(II)中所含的卤化银颗粒的浓度在添加量中不小于20重量% 高分子絮凝剂。
    • 4. 发明授权
    • Silver halide photographic light-sensitive material
    • 卤化银照相感光材料
    • US5411849A
    • 1995-05-02
    • US162674
    • 1993-12-06
    • Takuji Hasegawa
    • Takuji Hasegawa
    • G03C1/00G03C1/005G03C1/015G03C1/047G03C1/06G03C1/07G03C1/18G03C1/20G03C1/08
    • G03C1/047G03C1/015G03C1/0051G03C1/18G03C1/20
    • A silver halide photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a silver halide emulsion comprising silver halide grains, which is prepared by a process comprising(i) forming the silver halide emulsion by mixing a silver salt and a halide salt in a dispersion medium,(ii) subjecting the emulsion formed to washing to remove water-soluble salts, and then(iii) carrying out chemical sensitization of the emulsion wherein in (ii), the washing is carried out by coagulating the emulsion by a gelatin coagulant selected from of a modified gelatin or a polymeric coagulant represented by the following formula [I]; and in (iii), iodide-containing silver halide fine grains are added at a time during the course of the chemical sensitization, ##STR1##
    • 一种卤化银照相感光材料,其包含其上具有含有卤化银乳剂的卤化银乳剂层的载体,所述卤化银乳剂层包含卤化银颗粒,其通过以下方法制备,所述方法包括(i)通过将银盐和 卤化物盐,(ii)使所形成的洗涤剂进行洗涤以除去水溶性盐,然后(iii)进行乳液的化学增感,其中在(ii)中,通过使乳液凝结进行洗涤 通过选自由下式[I]表示的改性明胶或聚合物凝结剂的明胶凝结剂; 在(iii)中,在化学增感过程中一次加入含碘化物的卤化银细粒,
    • 9. 发明授权
    • Composite of silver halide photographic light-sensitive material and
radiation fluorescent screen
    • 复合的卤化银照相感光材料和辐射荧光屏
    • US5576160A
    • 1996-11-19
    • US498777
    • 1995-07-05
    • Kazuyoshi GoanHaruhiko SakumaTakuji HasegawaKazuhiro Iwasaki
    • Kazuyoshi GoanHaruhiko SakumaTakuji HasegawaKazuhiro Iwasaki
    • G21K4/00G03C1/00G03C1/46G03C1/825G03C5/17G03C5/29
    • G03C5/17Y10S430/167
    • A composite for radiography is disclosed which essentially consists of a) a silver halide photographic light-sensitive material comprising a transparent support and at least one light-sensitive silver halide emulsion layer provided on each side of the support, b) fluorescent screen A having a 80 kVp X-ray energy absorption of 40% or more and c) fluorescent screen B having a 80 kVp X-ray energy absorption of 50% or more and the absorption more than fluorescent screen A, the material being sandwiched between the screens A and B in such a manner that emulsion layer A is in close contact with screen A and emulsion layer B is in close contact with screen B, wherein the slope of the straight portion in the characteristic curve of emulsion layer A is less than that of emulsion layer B and emulsion layers A and B of the silver halide photographic light-sensitive material have sensitivity on an exposed side that an exposure necessary to give a density of the minimum density +0.5 is 0.027 to 0.040 lux.multidot.second.
    • 公开了用于射线照相的复合材料,其基本上由以下组成:a)包含透明支撑体的卤化银摄影感光材料和设置在支持体的每一侧上的至少一种感光卤化银乳剂层,b)荧光屏A, 80kVp X射线能量吸收为40%以上,c)荧光屏B具有80kVp的X射线能量吸收50%以上,吸收大于荧光屏A,该材料夹在屏幕A和 B,乳液层A与筛网A紧密接触,乳液层B与筛网B紧密接触,其中乳液层A的特性曲线中直线部分的斜率小于乳剂层的斜率 B和卤化银照相感光材料的乳剂层A和B在曝光侧具有敏感性,使得给出最小密度+0.5的密度所需的曝光为0.027至0.0 40 luxxsecond。