System and method for radiological image formation
    3.
    发明授权
    System and method for radiological image formation 失效
    放射图像形成的系统和方法

    公开(公告)号:US5998083A

    公开(公告)日:1999-12-07

    申请号:US028758

    申请日:1998-02-24

    摘要: An image-forming system for radiological imaging is disclosed said system consisting of an intensifying screen comprising on a support at least one layer of a green-light emitting phosphor and, in operative association therewith, a prehardened light-sensitive photographic silver halide film material, comprising a support and on both sides thereof one or more hydrophilic colloid layers, said layers being hardened to such an extent that their swelling degree is reduced to less than 200% after immersing said material for 2 minutes in demineralised water of 35.degree. C.; further comprising in at least one of said hydrophilic layers chemically ripened, monodisperse essentially cubic silver chloroiodide grains having a mean crystal diameter of from 0.40 mm up to 0.65 mm; wherein said grains have been spectrally sensitised in the wavelength range between 520 and 580 nm, have a maximum absorption between 540 and 500 nm and have been coated in a total amount of silver per sq.m. of from 6 g up to 8 g, wherein said amount is expressed as an equivalent amount of silver nitrate per sq.m.; said image-forming system being characterised in that said silver chloroiodide grains have been doped with a complex ion compound satisfying the formula[ML.sub.6 ].sup.n- (I)whereinM represents a filled frontier orbital polyvalent metal ion;L.sub.6 represents six coordination complex ligands which are independently selected, provided that at least three, more preferred four, of the said ligands are more electronegative than any halide ligand and at least four of the said ligands are anionic ligands; n=1, 2, 3 or 4;and wherein the energetic distance between filled higher occupied (HOMO) and lower unoccupied (LUMO) molecular orbital is more than 27000 cm.sup.-1.

    摘要翻译: 公开了一种用于放射成像的图像形成系统,所述系统由增强屏幕组成,所述增强屏幕包括在至少一层绿光发射荧光体的支撑件上,并且与其可操作地相关联的预硬化的感光照相卤化银膜材料, 其包含支撑体,并且在其两侧上具有一个或多个亲水胶体层,所述层被硬化至使其在35℃的软化水中浸渍2分钟后其溶胀度降低至小于200%的程度。 还包括在所述亲水层中的至少一个化学成熟,单分散基本上具有0.40mm至0.65mm的平均晶体直径的立方体氯化银银晶粒; 其中所述晶粒已经在520和580nm之间的波长范围内被光谱增感,在540和500nm之间具有最大吸收,并且已经以每平方米的总量涂覆银。 为6g至8g,其中所述量表示为每平方米当量的硝酸银。 所述成像系统的特征在于所述氯代碘化银颗粒已经掺杂满足式[ML6] n-n(I)的复合离子化合物,其中M表示填充的边界轨道多价金属离子; L6表示独立选择的六个配位络合配体,只要至少三个,更优选的四个所述配体比任何卤化物配体更具有电负性,并且至少四个所述配体是阴离子配体; n = 1,2,3或4; 并且其中填充的较高占据(HOMO)和较低未占据(LUMO)分子轨道之间的能量距离大于27000cm -1。

    Method of hardener-free processing of a forehardened silver halide
photographic material
    4.
    发明授权
    Method of hardener-free processing of a forehardened silver halide photographic material 失效
    未硬化卤化银照相材料的无硬化处理方法

    公开(公告)号:US5795704A

    公开(公告)日:1998-08-18

    申请号:US752521

    申请日:1996-11-20

    摘要: A method is disclosed of hardener-free processing a forehardened silver halide photographic material comprising a film support and on one or both sides thereof at least one silver halide emulsion layer characterized in that (1) each silver halide emulsion layer comprises spectrally sensitized cubic silver chloride or silver bromochloride grains having not more than 25 mole % of bromide in a total amount of coated silver expressed as the equivalent amount of silver nitrate in the range of from 2.5 to 4 g/m.sup.2 ; (2) the forehardened material has a water absorption of less than 4 grams per gram of gelatin, wherein said water absorption has been determined by making the difference by weight of the material when dry and when having been dipped in demineralized water of 25.degree. C. during 3 minutes followed by squeezing off the superficial water; (3) hardener-free processing includes development with a developing solution comprising thiocyanate ions in amounts from 10.sup.-3 up to 10.sup.-2 molar.

    摘要翻译: 公开了一种无硬化处理包含薄膜载体的预硬化卤化银照相材料的方法,其一面或两面上至少有一个卤化银乳剂层,其特征在于:(1)每个卤化银乳剂层包含光谱增感的立方氯化银 或溴化银的银含量不超过25摩尔%的溴化银,其总量为以2.5至4克/米2的硝酸银表示; (2)预硬化材料每克明胶的吸水量小于4克,其中所述吸水性是通过在干燥时使材料的重量差异和当浸入25℃的软化水中时确定的 在3分钟内,然后挤压出浅水; (3)无固化剂处理包括用含有10-3至10-2摩尔的硫氰酸根离子的显影溶液进行显影。

    Developing solution and method for developing an exposed silver halide
photographic material

    公开(公告)号:US5593817A

    公开(公告)日:1997-01-14

    申请号:US594144

    申请日:1996-01-31

    摘要: A photographic developing solution and a method of developing silver halide materials in the said developing solution is disclosed, the said developing solution comprising hydroquinone in an amount from 0 to 30 g per litre, an auxiliary developer, and silver halide complexing agents in an amount from 0 to 50 g per litre, characterized in that said developer further comprisesin amounts from 0.1 to 5 g per litre a compound corresponding to the formula (I), accompanied by charge compensating anions,Z'N.sup.+ --R--N.sup.+ Z" (I)wherein at least divalent group R contains at least one oxyethylene group and wherein Z' and Z", being the same or different, are composed of enough atoms to form a heterocyclic aromatic 5- or 6-ring;andat least 1 g of a compound corresponding to the formula (II), a precursor thereof, a derivative thereof and/or a metal salt thereof ##STR1## wherein each of A, B and D independently represents an oxygen atom or NR.sup.1 ;X represents an oxygen atom, a sulphur atom, NR.sup.2 ; CR.sup.3 R.sup.4 ;C=O; C=NR.sup.5 or C=S;Y represents an oxygen atom, a sulphur atom, NR.sup.'2 ; CR.sup.'3 R.sup.'4 ; C=O, C=NR.sup.'5 or C=S;Z represents an oxygen atom, a sulphur atom, NR.sup."2 ; CR.sup."3 R.sup."4 ; C=O; C=NR.sup."5 or C=S;n equals 0, 1 or 2;each of R.sup.1 to R.sup.5, R.sup.'1 to R.sup.'5 and R.sup."1 to R.sup."5 independently represents hydrogen, alkyl, aralkyl, hydroxyalkyl, carboxyalkyl; alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl or heterocyclyl;and whereinR.sup.3 and R.sup.4, R.sup.'3 and R.sup.'4, R.sup."3 and R.sup."4, may further form together a ring; andwherein in the case that X=CR.sup.3 R.sup.4 and Y=CR.sup.'3 R.sup.'4, R.sup.3 and R.sup.'3 and/or R.sup.4 and R.sup.'4 may form a ring and wherein in the case that Y=CR.sup.'3 R.sup.'4 and Z=CR.sup."3 R.sup."4 with n=1 or 2, R.sup.'3 and R.sup."3 and/or R.sup.'4 and R.sup."4 may form a ring.

    Preparation of silver halide tabular emulsions in the presence of polar
aprotic solvents and/or alcohols
    6.
    发明授权
    Preparation of silver halide tabular emulsions in the presence of polar aprotic solvents and/or alcohols 失效
    在极性非质子溶剂和/或醇的存在下制备卤化银片状乳液

    公开(公告)号:US5541051A

    公开(公告)日:1996-07-30

    申请号:US374177

    申请日:1995-01-18

    CPC分类号: G03C1/0051 G03C1/015

    摘要: This invention offers a new method to produce tabular silver halide grains, more preferably silver bromide or silver bromoiodide grains, having a tabularity, defined as the ratio between the aspect ratio and the thickness of the emulsion crystals, of at least 25 and a homogeniety of the distribution of said silver halide emulsion crystals, defined as a hundred times the ratio between the standard deviation and the average projective crystal diameter of said crystals of less than 30, characterized by the steps of adding to a reaction vessel containing at least one polar aprotic solvent a silver salt in an amount to get a concentration from 0.01 to 1M of said silver salt and a halide salt in an amount to get a concentration 1 to 10.sub.4 times the molar concentration of said silver salt; dissolving the said silver salt and the said halide salt; adding a protic solvent to the said reaction vessel in order to form twinned tabular nuclei; colloidally stabilizing said twinned tabular nuclei by the addition of a protective colloid apart or together with at least one protic solvent or with a mixture of at least one protic and at least one aprotic solvent, in order to obtain a ratio by weight of water to (a)protic solvent of not more than 40:60 in the reaction vessel; optionally growing said twinned tabular nuclei to tabular silver halide emulsion crystals in the same or in another reaction vessel by the addition of an aqueous soluble silver salt solution and a aqueous soluble halide salt solution; flocculating and decanting the said emulsion crystals obtained, followed by washing and redispersing or applying dialysis or ultrafiltration techniques.

    摘要翻译: 本发明提供了一种制备片状卤化银颗粒,更优选溴化银或溴碘化银颗粒的新方法,其具有平坦度,其定义为乳液晶体的纵横比和厚度之间的比例至少为25,并且均匀度 所述卤化银乳剂晶体的分布定义为所述晶体的标准偏差和平均投射晶体直径之比的百倍以下,小于30,其特征在于以下步骤:向含有至少一种极性非质子 溶剂的银盐,其量为所得银盐的0.01至1M的浓度和卤化物盐,其量为所述银盐的摩尔浓度的1至104倍; 溶解所述银盐和所述卤化物盐; 向所述反应容器中加入质子溶剂,以便形成配对的片状核; 通过加入保护胶体与至少一种质子溶剂或至少一种质子性和至少一种非质子溶剂的混合物一起胶体地稳定所述双胞嘧啶核,以获得水的重量比( a)反应容器中不超过40:60的质子溶剂; 任选地通过加入水溶性银盐溶液和水溶性卤化物盐溶液,在相同或另一反应容器中将所述孪生片状核生长成片状卤化银乳剂晶体; 将所得乳液晶体絮凝和倾析,然后洗涤和再分散或进行透析或超滤技术。

    Light-sensitive silver halide photographic film material and radiographic intensifying screen-film combination
    7.
    发明授权
    Light-sensitive silver halide photographic film material and radiographic intensifying screen-film combination 有权
    感光卤化银照相胶片材料和放射照相增强屏幕膜组合

    公开(公告)号:US06472137B1

    公开(公告)日:2002-10-29

    申请号:US09709628

    申请日:2000-11-13

    IPC分类号: G03C1005

    摘要: A light-sensitive silver halide photographic film material has been provided, said film material comprising a transparent support and on both sides thereof at least one light-sensitive emulsion layer having spectrally and chemically sensitized tabular silver halide grains rich in silver bromide, further having silver iodide in an amount of less than 3 mole % based on silver, with two flat parallel {111} crystal faces, said grains accounting for a total projective surface of said parallel crystal faces in said emulsion of at least 50%, further having an average aspect ratio of at least 2:1, a grain thickness of from 0.05 up to 0.15 &mgr;m, a site-directing azacyanine compound satisfying the general formulae disclosed herein in an amount of not less than 1×10−4 mole per mole of silver halide coated and one or more J-aggregating spectrally sensitizing dye(s), wherein a molar ratio amount between said site directing compound and said J-aggregating spectrally sensitizing dye(s) is at least 1:6 for a grain coverage of said {111} tabular grains exceeding 50%. A radiographic screen/film combination has also been described comprising said light-sensitive silver halide photographic film material and two supporting or self-supporting X-ray intensifying screens) comprising luminescent phosphors, wherein by contacting the film material with a sandwich of a pair of said intensifying screens and exposing said combination to X-rays, emission of radiation by said luminescent phosphors in the wavelength range for which said material has been made spectrally sensitive provides a black-and-white diagnostic image after processing of said exposed radiographic film material.

    摘要翻译: 已经提供了感光卤化银照相胶片材料,所述胶片材料包括透明支撑体,并且在其两侧上具有至少一个感光乳剂层,其具有富含溴化银的光谱和化学增感的片状卤化银颗粒,还具有银 碘化物的量小于3摩尔%,具有两个平的平行{111}晶面,所述颗粒占所述乳液中所述平行晶面的总投影面至少为50%,进一步具有平均 纵横比为至少2:1,晶粒厚度为0.05至0.15μm,位置引导的氮杂菁化合物,其满足本文公开的通式,其用量为每摩尔卤化银涂层不小于1×10 -4摩尔, 一种或多种J聚集光谱增感染料,其中所述位点引导化合物和所述J-聚集光谱增感染料之间的摩尔比为至少1:6 所述{111}片状晶粒的晶粒覆盖率超过50%。还描述了包括所述感光卤化银照相胶片材料和两种支撑或自支撑X射线增强屏幕的放射照相屏/膜组合,其包含发光 荧光体,其中通过使膜材料与一对所述增强屏幕的夹层接触并将所述组合暴露于X射线,所述发光荧光体在所述材料已经被制成光谱敏感的波长范围内的发射由黑色 处理所述暴露的放射线照相胶片材料之后的白色诊断图像。

    Radiographic UV/blue intensifying screen-film combination
    8.
    发明授权
    Radiographic UV/blue intensifying screen-film combination 失效
    射线照相UV /蓝色增强屏幕膜组合

    公开(公告)号:US5989799A

    公开(公告)日:1999-11-23

    申请号:US99325

    申请日:1998-06-18

    摘要: A radiographic screen/film combination or system has been provided comprising a duplitized film sandwiched between a pair of supporting or self-supporting X-ray intensifying screens, characterized in that i) said pair of supported or self-supporting X-ray intensifying screens essentially consists of luminescent phosphor particles emitting at least 50% and more preferably at least 80% of their emitted radiation in the wavelength range shorter than 380 nm, as e.g. a niobium and gadolinium doped, monoclinic M, yttriumtantalate (MYT) phosphor corresponding to formula IYTaO.sub.4 :Gd:Nb (I),ii) said film comprises {111} tabular silver halide grains rich in silver chloride, spectrally sensitive to irradiation in the said wavelength range shorter than 380 nm by the presence of at least one azacyanine dye as a spectral sensitizer.

    摘要翻译: 已经提供了包括夹在一对支撑或自支撑X射线增强屏之间的双面胶片的射线照相屏/膜组合或系统,其特征在于i)所述一对支撑或自支撑X射线增强屏本质上 由发射荧光体颗粒的发射波长范围小于380nm的发射辐射的至少50%,更优选至少80%,例如 对应于式IYTaO4:Gd:Nb(I)的铌和钆掺杂的单斜晶M,钇钽酸盐(MYT)荧光体,ii)所述薄膜包含富含氯化银的{111}片状卤化银颗粒,对所述 通过存在至少一种氮杂菁染料作为光谱增感剂,波长范围短于380nm。

    Processing of a light-sensitive silver halide photographic material
    9.
    发明授权
    Processing of a light-sensitive silver halide photographic material 失效
    感光卤化银照相材料的加工

    公开(公告)号:US5912108A

    公开(公告)日:1999-06-15

    申请号:US991345

    申请日:1997-12-16

    摘要: A method has been disclosed of processing an image-wise exposed light-sensitive black-and-white silver halide photographic material comprising a support coated on one or both sides thereof with hydrophilic layers, wherein at least one of said layers comprises one or more emulsions having tabular silver halide crystals rich in silver chloride, said method comprising the steps of developing, fixing, rinsing and drying, further characterized in that said developing step proceeds in a black-and-white developer comprising one or more organic compounds inhibiting development, more preferably one or more benzotriazole compounds, and in that said developer is substantially free from bromide ions in favor of a low fog level, a high speed and a sufficiently high covering power of the developed tabular grains.

    摘要翻译: 已经公开了一种处理图像曝光的感光黑白卤化银照相材料的方法,其包括在其一侧或两侧上涂覆有亲水层的载体,其中所述层中的至少一层包含一种或多种乳液 具有富含氯化银的片状卤化银晶体,所述方法包括显影,定影,漂洗和干燥的步骤,其特征还在于所述显影步骤在包含一种或多种抑制显影的有机化合物的黑白显影剂中进行,更多 优选一种或多种苯并三唑化合物,并且所述显影剂基本上不含溴离子,有利于显影的片状颗粒的低雾度,高速度和足够高的覆盖力。

    Method for processing an exposed photographic silver halide material
    10.
    发明授权
    Method for processing an exposed photographic silver halide material 失效
    处理曝光的照相卤化银材料的方法

    公开(公告)号:US5604082A

    公开(公告)日:1997-02-18

    申请号:US594722

    申请日:1996-01-31

    摘要: A method has been disclosed of processing an exposed silver halide photographic material comprising at least one coated hydrophilic silver halide emulsion layer comprising tabular grains rich in chloride, bounded by [100] or [111] major faces, characterized by the steps of developing, followed by fixing, rinsing and drying the said material, wherein developing proceeds in a developer, comprising hydroquinone in an amount from 0 to 30 g per liter, an auxiliary developer, as silver halide complexing agents alkali metal sulphite salts in an amount from 1 to 50 g per liter, at least 1 g of a compound corresponding to the formula (I), a precursor thereof, a derivative thereof and/or a metal salt thereof ##STR1## wherein the substituents are defined in the main embodiment of the specification.

    摘要翻译: 已经公开了一种处理曝光的卤化银照相材料的方法,该材料包含至少一个涂覆的亲水性卤化银乳剂层,其包含由[100]或[111]主面限定的富含氯化物的片状颗粒,其特征在于以下步骤: 通过固定,漂洗和干燥所述材料,其中显影在显影剂中进行,其包含量为0至30g /升的对苯二酚,辅助显影剂,卤化银配合剂碱金属亚硫酸盐,其量为1至50 g,至少1g对应于式(I)的化合物,其前体,其衍生物和/或其金属盐,其中取代基在主要实施方案中定义 规范。