公开(公告)号：US5998083A

公开(公告)日：1999-12-07

申请号：US028758

申请日：1998-02-24

申请人： Ann Verbeeck ,  Freddy Henderickx ,  Dirk Vandenbroucke ,  Peter Verrept

发明人： Ann Verbeeck ,  Freddy Henderickx ,  Dirk Vandenbroucke ,  Peter Verrept

IPC分类号： G03C1/035 ,  G03C1/08 ,  G03C1/30 ,  G03C5/17 ,  G03C5/30 ,  G03C5/16

CPC分类号： G03C5/17 ,  G03C1/08 ,  G03C1/30 ,  G03C1/035 ,  G03C5/30 ,  Y10S430/167

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。

公开(公告)号：US6030762A

公开(公告)日：2000-02-29

申请号：US42466

申请日：1998-03-16

申请人： Peter Verrept ,  Ann Verbeeck

发明人： Peter Verrept ,  Ann Verbeeck

IPC分类号： G03C1/005 ,  G03C1/07 ,  G03C1/035

CPC分类号： G03C1/07 ,  G03C1/0053

摘要： A method has been found of preparing a silver halide emulsion comprising silver chlorobromoiodide or silver chloroiodide tabular grains with at least 75 mole % of chloride and from 0.1 up to 3 mole % of iodide, based on silver, further having {111} crystal faces, an average aspect ratio of at least 2:1, with at least 50%, more preferable at least 75% and still more preferable more than 90% of the total projected area of all grains being provided by said tabular grains and with a variation coefficient on sphere equivalent diameter (SED) of said grains being lower than 0.30, more preferably lower than 0.25 and most preferable from 0.05 up to at most 0.15, said method comprising the steps ofpreparing a dispersion medium (preferably containing a gelatino-peptizer) and a crystal habit growth modifier in a reaction vessel;precipitating silver chlor(oiod)ide or silver chlorobrom(oiod)ide nuclei in a crystal nucleation step by mixing silver salt and halide salt solutions in the said dispersion medium,growing the said nuclei during one or more growth and/or physical ripening steps;characterized bymaintaining the said dispersion medium at an initial pH value maintained between 6.0 and 9.0 during nucleation;setting pH to a value lower than 6.0, and more preferably to a value of not more than 4.0, for at least 30 seconds, between ending the said nucleation step and ending the said growing step; followed byresetting pH to the said initial pH value.

摘要翻译： 已经发现了制备包含氯银溴化银或氯碘酸银片状晶粒的卤化银乳剂的方法，其具有至少75摩尔％的氯化物和0.1至3摩尔％的基于银的碘化物，进一步具有{111}晶面， 平均长宽比为至少2:1，具有至少50％，更优选至少75％，更优选由所述片状颗粒提供的所有晶粒的总投影面积的90％以上，并具有变异系数 所述颗粒的球体当量直径（SED）小于0.30，更优选低于0.25，最优选从0.05直至最多0.15，所述方法包括制备分散介质（优选含有凝胶消泡剂）和 反应容器中的水晶习性生长调节剂; 在所述分散介质中混合银盐和卤化物盐溶液，在晶体成核步骤中沉淀出氯化银（oiod）或氯化氯（​​oiod））核，在一个或多个生长和/或物理成熟步骤中生长所述核; 其特征在于在成核期间将所述分散介质保持在维持在6.0和9.0之间的初始pH值; 在结束所述成核步骤和结束所述生长步骤之间将pH调节至小于6.0，更优选至多4.0的值至少30秒; 然后将pH重新设定为所述初始pH值。

公开(公告)号：US6010840A

公开(公告)日：2000-01-04

申请号：US232733

申请日：1999-01-19

申请人： Peter Verrept ,  Ann Verbeeck ,  Nadia Vermant ,  Frank Louwet

发明人： Peter Verrept ,  Ann Verbeeck ,  Nadia Vermant ,  Frank Louwet

IPC分类号： G03C1/005 ,  G03C1/07 ,  G03C5/16 ,  G03C1/035 ,  G03C1/043 ,  G03C1/053

CPC分类号： G03C1/0053 ,  G03C1/07 ,  G03C5/16

摘要： A method has been described for preparing a gelatinous emulsion having grains rich in silver choride, wherein at least 70%, and more preferred 90%, of the total projected area of all grains is provided by {111} tabular grains having an average aspect ratio of more than 2:1, an average equivalent circular diameter of at least 0.3 .mu.m and an average thickness of from 0.05 to 0.25 .mu.m , wherein a percent variation on average equivalent circular diameter of said tabular grains is 30% or less and wherein a percent variation on average thickness of said tabular grains is 20% or less and wherein said tabular grains are present in percent numerical amounts of at least 90%, said method comprising following steps:preparing in a reaction vessel a dispersion medium comprising an initial amount of a crystal habit modifying agent;precipitating therein silver halide crystal nuclei by double-jet precipitation of an aqueous silver nitrate and an aqueous solution comprising halide ions, wherein less than 10% by weight of a total amount of silver nitrate used is consumed;growing said silver halide crystal nuclei by further precipitation of silver halide by means of double-jet precipitation of an aqueous silver nitrate solution and an aqueous solution comprising halide ions, wherein more than 90% by weight of a total amount of silver nitrate is consumed, characterized in that during at least one of the said steps at least one compound is added to the said reaction vessel, said compound being a hydrophilic amphoteric block copolymer containing (i) a non-ionic acrylic block comprising a sequence of units having pendant nitrile groups according to formula I given in the claims and (ii) a acrylamid(in)ic block comprising a sequence of units according to formula II given in the claims, said hydrophilic amphoteric block copolymer further comprising within said acrylamid(in)ic block(s) units having pendant acidic groups or salts thereof as well as units having pendant basic groups or salts thereof. Emulsions having tabular grains prepared according to the method of the present invention and light-sensitive silver halide photographic materials wherein said emulsions have been coated in light-sensitive layers have also been disclosed.

公开(公告)号：US6083678A

公开(公告)日：2000-07-04

申请号：US168866

申请日：1998-10-09

申请人： Peter Verrept ,  Jan Cuypers

发明人： Peter Verrept ,  Jan Cuypers

IPC分类号： G03C1/005 ,  G03C1/46 ,  G03C5/16 ,  G03C1/015 ,  G03C1/047 ,  G03C1/08

CPC分类号： G03C1/0053 ,  G03C1/46 ,  G03C2200/01 ,  G03C5/16

摘要： A method has been described for preparing a light-sensitive silver halide photographic emulsion comprising performing at least three distinct precipitation steps in an aqueous medium into a reaction vessel, followed by desalting by means of flocculation and washing or by means of ultrafiltration, said emulsion comprising a colloidally stabilizing binder and {100} tabular silver halide grains containing at least 50 mole % of silver chloride, wherein at least 60% by number of all grains is provided by said tabular grains, and wherein said tabular grains exhibit an average aspect ratio of at least 2, an average thickness of at most 0.25 .mu.m with a variation coefficient of at most 0.25, and an average equivalent circular crystal diameter of 0.3 .mu.m or more with a variation coefficient of at most 0.20;said three distinct precipitation steps being a nucleation step and two growth steps, said method being further characterized by introducing after ending the said nucleation step one or more crystal dislocation(s) onto nuclei formed in the said nucleation step in order to provide anisotropic growth of the said nuclei into {100} tabular grains,wherein introducing said crystal dislocation(s) is performed within a time taking no longer than the time required to perform a first physical ripening step after the nucleation step in order to get a number of dislocation lines of less than 5, in one and the same crystallographic plane, andwherein said physical ripening step between introducing said dislocation(s) and growing the nuclei having said dislocation(s) in a first growth step proceeds within a time interval from 2 to 10 minutes, and more preferably from 5 to 10 minutes.

摘要翻译： 已经描述了一种用于制备感光卤化银照相乳剂的方法，包括在水性介质中进行至少三个不同的沉淀步骤进入反应容器，随后通过絮凝和洗涤或通过超滤脱盐，所述乳液包含 含有至少50摩尔％氯化银的胶体稳定粘合剂和{100}平板状卤化银颗粒，其中由所述片状颗粒提供至少60％的全部颗粒，并且其中所述片状颗粒呈平均长宽比 至少为2，平均厚度为0.25μm以上，变异系数为0.25以下，平均当量圆形晶体直径为0.3μm以上，变异系数为0.20以下。 所述三个不同的沉淀步骤是成核步骤和两个生长步骤，所述方法的进一步特征在于，在所述成核步骤结束之后将一个或多个晶体位错引入到在所述成核步骤中形成的核上，以提供 将所述核转化为{100}片状颗粒，其中引入所述晶体位错在不超过成核步骤后进行第一物理熟化步骤所需时间的时间内进行，以获得多个位错线 小于5，并且其中在第一生长步骤中引入所述位错和生长具有所述位错的核的所述物理成熟步骤在2至10的时间间隔内进行 分钟，更优选为5〜10分钟。

公开(公告)号：US5840474A

公开(公告)日：1998-11-24

申请号：US715499

申请日：1996-09-18

申请人： Hieronymus Andriessen ,  Peter Verrept

发明人： Hieronymus Andriessen ,  Peter Verrept

IPC分类号： G03C1/005 ,  G03C1/015 ,  G03C1/04 ,  G03C1/035 ,  G03C1/07

CPC分类号： G03C1/04 ,  G03C1/0053 ,  G03C1/015

摘要： A method is disclosed for the preparation of tabular silver halide emulsion grains rich in chloride and showing (100) parallel major and an average aspect ratio of at least 2.0 in silica sol as protective colloid binder. Important parameters are the addition modalities of the silica sol and the ratio of its amount to the amount of a costabilizing onium compound.

摘要翻译： 公开了一种用于制备富含氯化物的片状卤化银乳剂颗粒的方法，并显示（100）在二氧化硅溶胶中作为保护胶体粘合剂的平行主要和平均长宽比至少为2.0的方法。 重要参数是二氧化硅溶胶的添加方式及其量与稳定化鎓化合物的量的比例。

公开(公告)号：US5989799A

公开(公告)日：1999-11-23

申请号：US99325

申请日：1998-06-18

申请人： Ann Verbeeck ,  Peter Verrept ,  Paul Callant ,  Koenraad Caron

发明人： Ann Verbeeck ,  Peter Verrept ,  Paul Callant ,  Koenraad Caron

IPC分类号： G21K4/00 ,  G03C1/005 ,  G03C1/035 ,  G03C1/10 ,  G03C1/12 ,  G03C5/17

CPC分类号： G03C1/0053 ,  G03C1/122 ,  G03C5/17 ,  G03C2200/03 ,  Y10S430/167

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。

公开(公告)号：US5912108A

公开(公告)日：1999-06-15

申请号：US991345

申请日：1997-12-16

申请人： Ann Verbeeck ,  Peter Verrept ,  Freddy Henderickx

发明人： Ann Verbeeck ,  Peter Verrept ,  Freddy Henderickx

IPC分类号： G03C5/26 ,  G03C1/005 ,  G03C1/035 ,  G03C5/305 ,  G03C5/31 ,  G03C5/29

CPC分类号： G03C1/0053 ,  G03C5/305 ,  G03C5/26 ,  G03C5/31

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。

公开(公告)号：US5885763A

公开(公告)日：1999-03-23

申请号：US956362

申请日：1997-10-23

申请人： Peter Verrept ,  Hieronymus Andriessen

发明人： Peter Verrept ,  Hieronymus Andriessen

IPC分类号： G03C1/00 ,  G03C1/005 ,  G03C1/015 ,  G03C1/035 ,  G03C1/047 ,  G03C5/16

CPC分类号： G03C1/0053 ,  G03C1/047 ,  G03C5/16 ,  Y10S430/167

摘要： A method is disclosed of preparing of a photographic silver halide emulsion comprising precipitating in one or more precipitation steps in a reaction vessel, followed by desalting by means of flocculation and washing or by means of ultrafiltration, said emulsion comprising gelatin as a binder and {100} tabular silver halide grains containing at least 50 mole % of chloride, wherein at least 40% by number of all grains is provided by said tabular grains, and wherein said tabular grains exhibit an average aspect ratio of at least 2, an average thickness of at most 0.5 .mu.m, and an average equivalent circular crystal diameter of 0.3 .mu.m or more, characterized in that during said precipitation step(s) said gelatin binder present in said reaction vessel is substantially free of calcium ions and is oxidized to a degree in order to have a methionine content of at most 4000 ppm.

摘要翻译： 公开了一种制备照相卤化银乳剂的方法，其包括在反应容器中的一个或多个沉淀步骤中沉淀，然后通过絮凝和洗涤或通过超滤脱盐，所述乳液包含明胶作为粘合剂和{100 }含有至少50摩尔％氯化物的片状卤化银颗粒，其中由所述片状颗粒提供至少40％的全部颗粒，并且其中所述片状颗粒的平均纵横比至少为2，平均厚度为 至多0.5μm，平均当量圆形结晶直径为0.3μm以上，其特征在于，在所述沉淀步骤中，存在于所述反应容器中的所述明胶粘合剂基本上不含钙离子并被氧化至一定程度 以使甲硫氨酸含量在4000ppm以下。

公开(公告)号：US6136524A

公开(公告)日：2000-10-24

申请号：US256239

申请日：1999-02-24

申请人： Peter Verrept ,  Ann Verbeeck ,  Frank Louwet

发明人： Peter Verrept ,  Ann Verbeeck ,  Frank Louwet

IPC分类号： G03C1/005 ,  G03C1/46 ,  G03C5/16 ,  G03C1/015

CPC分类号： G03C1/0053 ,  G03C1/46 ,  G03C5/16

摘要： A light-sensitive silver halide photographic emulsion has been described, said emulsion comprising a colloidally stabilizing binder and {100} tabular silver halide grains containing at least 50 mole % of silver chloride, wherein at least 70% by number of all grains is provided by said tabular grains, exhibiting an average aspect ratio of at least 5 and an average equivalent circular grain diameter of at least 0.3 .mu.m, wherein said tabular grains have an average thickness of less than 0.25 .mu.m for at least 75% by number of all tabular grains.In order to prepare said emulsion a method has been disclosed comprising performing at least three distinct precipitation steps in an aqueous medium in a reaction vessel, followed by desalting by means of washing after flocculation or by means of ultrafiltration, wherein said three distinct precipitation steps consist of a nucleation step followed by a first and a second growth step, said method being further characterized by introducing in the said reaction vessel, after the first growth step, of a block-copolymer according to the formula (I) as described in the detailed description and in the claims.

摘要翻译： 已经描述了感光卤化银照相乳剂，所述乳液包含胶体稳定粘合剂和含有至少50摩尔％氯化银的{100}片状卤化银颗粒，其中至少70％的全部颗粒由 所述片状颗粒的平均纵横比至少为5，平均当量圆形晶粒直径至少为0.3μm，其中所述片状颗粒的平均厚度小于0.25μm，至少75％ 片状颗粒。 为了制备所述乳液，已经公开了一种方法，其包括在反应容器中的水性介质中进行至少三个不同的沉淀步骤，然后通过絮凝后的洗涤或通过超滤进行脱盐，其中所述三个不同的沉淀步骤包括 的成核步骤之后是第一和第二生长步骤，所述方法的特征还在于在第一生长步骤之后在所述反应容器中引入根据式（I）的嵌段共聚物，如详细描述的 描述和权利要求。

公开(公告)号：US6048096A

公开(公告)日：2000-04-11

申请号：US28451

申请日：1998-02-24

申请人： Ann Verbeeck ,  Freddy Henderickx ,  Johan Loccufier ,  Peter Verrept

发明人： Ann Verbeeck ,  Freddy Henderickx ,  Johan Loccufier ,  Peter Verrept

IPC分类号： G03C1/005 ,  G03C1/035 ,  G03C1/09 ,  G03C1/18 ,  G03C1/29 ,  G03C1/30 ,  G03C5/17 ,  G03C5/30 ,  G03B42/04

CPC分类号： G03C5/17 ,  G03C1/0053 ,  G03C1/035 ,  G03C1/09 ,  G03C1/30 ,  G03C1/18 ,  G03C1/29 ,  G03C2001/0055 ,  G03C2001/03517 ,  G03C2001/03541 ,  G03C2001/03558 ,  G03C2001/03594 ,  G03C2001/095 ,  G03C2001/097 ,  G03C2005/3007 ,  G03C2200/03 ,  G03C5/30 ,  Y10S430/167

摘要： An image-forming system for radiological imaging is described 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 having monodisperse cubic silver chloroiodide grains with a mean crystal diameter of from 0.40 .mu.m up to 0.65 .mu.m or {111} tabular silver chloroiodide grains having an aspect ratio of from 5 to 20 and a tabularity from 20 to 200; wherein said grains have been spectrally sensitized in the green wavelength range and have been coated in a total amount of silver per sq.m. of from 6 g up to 8 g, expressed as an equivalent amount of silver nitrate per sq.m.; wherein in the image-forming system silver chloroiodide grains have been chemically sensitized with one or more selenide compound(s) generating silver selenide.

摘要翻译： 一种用于放射成像的图像形成系统被描述为由增强屏幕组成，该增强屏幕包括在至少一层绿色发光荧光体的支撑体上，并与其有关的预硬化的感光照相卤化银膜材料，包括 并且在其两侧上具有一个或多个具有平均晶体直径为0.40μm至0.65μm的单分散立方体氯化银颗粒或具有纵横比为5至20的{111}片状氯银银颗粒的亲水胶体层 从20到200的表格; 其中所述晶粒已经在绿色波长范围内被光谱增感，并且已经以每平方米的总量涂覆银。 为6g至8g，表示为每平方米当量的硝酸银。 其中在成像系统中，氯化银颗粒已经用一种或多种产生硒化银的硒化物化学增感。