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11 条记录 (耗时 0.013 秒)

    Mixed phosphor X-ray intensifying screens with improved resolution
    1.
    发明公开
    Mixed phosphor X-ray intensifying screens with improved resolution 失效
    Röntgenstrahlverstärkungsschirmmit gemischten Phosphoren und verbesserterAuflösung。

    公开(公告)号：EP0486783A1

    公开(公告)日：1992-05-27

    申请号：EP91115650.3

    申请日：1991-09-14

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Zegarski, William J.

    IPC分类号： C09K11/78 ,  C09K11/86 ,  G21K4/00

    CPC分类号： G03C5/17

    摘要： An X-ray intensifying screen made from a mixture of yttrium tantalate and lanthanum oxyhalide phosphors is described. This screen, when used to expose a silver halide element, e.g., conventional grain or tabular grain element, will produce superior image resolution compared to similar screens made using single phosphors alone.

    摘要翻译： 描述了由钽酸钇和卤氧化镧荧光体的混合物制成的X射线增强屏。 当用于暴露卤化银元件（例如常规晶粒或片状颗粒元素）时，该屏幕将与仅使用单一荧光体制备的类似屏幕相比产生优异的图像分辨率。

    Improved flux for phosphor particle size control
    3.
    发明公开
    Improved flux for phosphor particle size control 失效
    用于磷化物颗粒尺寸控制的改进的通量。

    公开(公告)号：EP0603554A3

    公开(公告)日：1994-07-20

    申请号：EP93118721.5

    申请日：1993-11-22

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Hedden, David Bruce ,  Zegarski, William J.

    IPC分类号： C09K11/02 ,  C09K11/78

    CPC分类号： C09K11/7701 ,  C09K11/025 ,  C09K11/7769

    摘要： An improved flux for use in preparing X-ray phosphors comprises an alkali metal sulfate, an alkali metal metaborate and, optionally a strontium halide. By varying the concentration of the metaborate and strontium halide in the flux composition, the size and dry bulk density of the phosphor particles and the speed of the phosphor, respectively, can be controlled. Also disclosed is a process of making phosphors using the above flux, and X-ray intensifying screens containing such phosphors.

    Process of preparing tantalate X-ray intensifying phosphors with improved X-ray to light conversion efficiency
    4.
    发明公开
    Process of preparing tantalate X-ray intensifying phosphors with improved X-ray to light conversion efficiency 失效
    一种用于制备透视加强Tantalatephosphoren具有改善的转化效率的过程。

    公开(公告)号：EP0491309A1

    公开(公告)日：1992-06-24

    申请号：EP91121488.0

    申请日：1991-12-14

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Zegarski, William J.

    IPC分类号： C09K11/78 ,  G21K4/00

    CPC分类号： C09K11/7701 ,  C09K11/7769 ,  G21K4/00 ,  G21K2004/06

    摘要： A process for preparing x-ray intensifying M' monoclinic tantalate phosphors by firing precursor oxides in a novel flux mixture of alkali metal sulfate/alkali metal or alkaline earth chloride/alkali metal metasilicate. Tantalate phosphors made in this manner have improved X-ray to light conversion efficiency. X-ray intensifying screens made from these phosphors have improved speed and can be used with good results with a plurality of X-ray film elements.

    摘要翻译： 一种制备X射线由在碱金属的硫酸盐/碱金属或碱土氯化物/碱金属偏硅酸盐的新颖的磁通混合物烧制前体氧化物强化M”钽酸单斜磷光体的过程。 按此种方式制造的荧光体的钽具有提高的透视到光转换效率。 透视强化从合成的磷光体屏幕制成具有改进的速度，并且可以与用X射线胶片元件的多元性良好的结果被使用。

    Process of preparing tantalate x-ray intensifying phosphors with improved efficiency
    5.
    发明公开
    Process of preparing tantalate x-ray intensifying phosphors with improved efficiency 失效
    Verfahren zur HerstellungRöntgenstrahlenverstärkenderTantalate-Phosphoren mit verbesserter Wirksamkeit。

    公开(公告)号：EP0491116A1

    公开(公告)日：1992-06-24

    申请号：EP91114696.7

    申请日：1991-08-31

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Zegarski, William J.

    IPC分类号： C09K11/78 ,  G21K4/00

    CPC分类号： G21K4/00 ,  C09K11/7701 ,  C09K11/7769 ,  G03C5/17 ,  G21K2004/06

    摘要： A process for preparing X-ray intensifying M' monoclinic tantalate phosphors by firing precursor oxides in a novel flux mixture containing a compound capable of producing an alkali metal oxide and an effective amount of an alkali metal metasilicate. Tantalate phosphors made in this manner have improved efficiency and purity. X-ray intensifying screens made from these phosphors have improved speed and can be used with good results with a plurality of X-ray film elements.

    摘要翻译： 一种通过在含有能够生产碱金属氧化物的化合物和有效量的碱金属偏硅酸盐的新型助熔剂混合物中煅烧前体氧化物来制备X射线增强M'单斜晶钽酸盐荧光体的方法。 以这种方式制备的尖晶石荧光体具有改善的效率和纯度。 由这些荧光体制成的X射线增强屏具有提高的速度，并且可以与多个X射线胶片元件一起使用。

    Improved flux for phosphor particle size control
    8.
    发明公开
    Improved flux for phosphor particle size control 失效
    Verb desserten Fluss zur Steuerung derPhosphorteilchengrösse。

    公开(公告)号：EP0603554A2

    公开(公告)日：1994-06-29

    申请号：EP93118721.5

    申请日：1993-11-22

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Hedden, David Bruce ,  Zegarski, William J.

    IPC分类号： C09K11/02 ,  C09K11/78

    CPC分类号： C09K11/7701 ,  C09K11/025 ,  C09K11/7769

    摘要： An improved flux for use in preparing X-ray phosphors comprises an alkali metal sulfate, an alkali metal metaborate and, optionally a strontium halide. By varying the concentration of the metaborate and strontium halide in the flux composition, the size and dry bulk density of the phosphor particles and the speed of the phosphor, respectively, can be controlled. Also disclosed is a process of making phosphors using the above flux, and X-ray intensifying screens containing such phosphors.

    摘要翻译： 用于制备X射线荧光体的改进的助熔剂包括碱金属硫酸盐，偏硼酸碱金属盐和任选的卤化锶。 通过改变助熔剂组合物中的偏硼酸盐和卤化锶的浓度，可以分别控制荧光体颗粒的尺寸和干体积密度以及荧光体的速度。 还公开了使用上述助熔剂制造荧光体的方法和含有这种荧光体的X射线增强屏。

    X-ray intensifying screens
    10.
    发明公开
    X-ray intensifying screens 失效
    X射线增强屏幕

    公开(公告)号：EP0121403A3

    公开(公告)日：1984-11-21

    申请号：EP84302092

    申请日：1984-03-28

    申请人： E.I. DU PONT DE NEMOURS AND COMPANY

    发明人： Zegarski, William J.

    IPC分类号： G21K04/00

    CPC分类号： G21K4/00

    摘要： X-ray intensifying screens which provide reduced mottle and noise, and improved image sharpness in photographic films associated therewith are produced by including small amounts of UV light absorbers in either the underlayer, an active layer containing a phosphor exhibiting narrow or line band emission, or the overcoat layer of the overall screen structure.