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    • 1. 发明授权
      US5891612A Photographic elements comprising highly loaded particulate material containing layer 失效
    • Photographic elements comprising highly loaded particulate material containing layer
    • US5891612A
    • 1999-04-06
    • US919923
    • 1997-08-28
    • Mridula Nair , Lloyd A. Lobo , George L. Oltean , Tamara K. Osburn
    • Mridula Nair , Lloyd A. Lobo , George L. Oltean , Tamara K. Osburn
    • G03C7/00 , G03C1/00 , G03C1/81 , G03C1/85 , G03C5/14 , G03C1/795 , G03C1/89 , G03C1/93
    • G03C5/14 , G03C1/81 , G03C1/853 , Y10S430/131
    • A photographic element is disclosed comprising a film support, at least one light-sensitive layer, a highly loaded layer which contains more than 30 volume percent of non-film forming particulate material, and upper and lower aqueous coated adjacent layers which are next to the highly loaded layer, the upper adjacent layer being further from the support and the lower adjacent layer being closer to the support relative to the highly loaded layer, each adjacent layer having a film forming binder content of greater than 70 volume percent, and the lower adjacent layer being at least 1.0 micron thick. In accordance with a preferred embodiment of the invention, an imaging element having excellent adhesion characteristics is obtained in combination with excellent magnetic recording characteristics and photographic transparency where the non-film forming particulate material in the highly loaded layer comprises conductive particles, the layer adjacent to the highly loaded layer which is closer to the support comprises a hydrophilic curl control layer, and the layer adjacent to the highly loaded layer which is further from the support or a layer coated thereover comprises an aqueous coated transparent magnetic recording layer, by virtue of the physical flatness, low granularity, and optical density of the element. Also disclosed is a process for simultaneously applying a plurality of coating compositions comprising an aqueous magnetic recording layer coating composition, an antistatic layer aqueous coating composition, and a curl control layer aqueous coating composition, along with other optional conventional gelatin containing aqueous coated layers, onto a support. The placing of the highly filled antistatic layer between two aqueous coated adjacent layers, which in a preferred embodiment of the invention comprise a magnetic recording layer and a curl control layer or two curl control layers, results in excellent adhesion of the coated layers to the support compared to where the antistatic layer is closest to the support. The mechanical properties of a photographic element containing such a highly filled layer is substantially strengthened when the highly filled layer is sandwiched between the two other aqueous coated layers.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 4. 发明授权
      US5633126A Films for reproducing digitally stored medical diagnostic images and integrating non-image information 失效
    • Films for reproducing digitally stored medical diagnostic images and integrating non-image information
    • 用于再现数字存储的医学诊断图像并集成非图像信息的影片
    • US5633126A
    • 1997-05-27
    • US574509
    • 1995-12-19
    • Robert E. Dickerson , Mridula Nair , George L. Oltean , Lloyd A. Lobo
    • Robert E. Dickerson , Mridula Nair , George L. Oltean , Lloyd A. Lobo
    • G03C1/035 , G03C1/295 , G03C1/83 , G03C5/14 , G03C5/26 , G03C1/76 , G03C1/005
    • G03C5/14 , G03C1/035 , G03C1/295 , G03C1/832 , G03C5/26 , Y10S430/145 , Y10S430/167
    • A radiation-sensitive silver halide film for reproducing digitally stored medical diagnostic images through a series of laterally offset exposures by a controlled radiation source followed by processing in 90 seconds or less, including development, fixing and drying. The film exhibits an average contrast in the range of from 1.5 to 2.0, measured over a density above fog of from 0.25 to 2.0. An emulsion layer is provided in which silver bromochloride grains (a) comprised of at least 10 mole percent bromide, based on silver, (b) having a mean equivalent circular diameter of less than 0.40 .mu.m, (c) exhibiting an average aspect ratio of less than 1.3, and (d) coated at a silver coverage of less than 40 mg/dm.sup.2. Adsorbed to the surfaces of the silver bromochloride grains at least one spectral sensitizing dye having an absorption half peak bandwidth in the spectral region of exposure by the controlled exposure source. The film contains an infrared opacifying dye that is capable of reducing specular transmission through the film before, during and after processing to less than 50 percent, measured at a wavelength within the spectral region of from 850 to 1100 nm. The film contains a magnetic recording layer which provides a positive b* value influence that is more than offset by the negative b* value influence of the silver bromochloride emulsion, allowing magnetic recording layer integration into the film while achieving favorable image tone and minimum density characteristics.
    • 一种辐射敏感的卤化银膜，用于通过受控辐射源的一系列横向偏移曝光再现数字存储的医学诊断图像，随后在90秒或更短时间内进行处理，包括显影，定影和干燥。 该薄膜的平均对比度在1.5至2.0的范围内，在雾度以上的密度测量为0.25至2.0。 提供一种乳液层，其中由基于银的至少10摩尔％的溴化物组成的溴氯化物颗粒（a），（b）平均当量圆直径小于0.40微米，（c）具有平均纵横比 小于1.3，（d）以小于40mg / dm 2的银覆盖率涂覆。 吸附到溴化银银粒子表面上的至少一种光谱增感染料，其通过受控曝光源在曝光的光谱区域中具有吸收半峰值带宽。 该膜含有一种红外遮光染料，其能够在850至1100nm的光谱区域内的波长处测量，其在处理之前，期间和之后通过膜的镜面透射小于50％。 该膜含有磁记录层，该记录层提供正值b *值的影响，该影响被溴溴氯化银乳剂的负b *值的影响所抵消，从而允许磁记录层一体化到膜中同时获得良好的图像色调和最小密度特性 。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 9. 发明授权
      US5520954A Method of making transparent magnetic recording layers 失效
    • Method of making transparent magnetic recording layers
    • 制造透明磁记录层的方法
    • US5520954A
    • 1996-05-28
    • US401518
    • 1995-03-10
    • George L. Oltean , Robert O. James , Brian S. White , David B. Bailey
    • George L. Oltean , Robert O. James , Brian S. White , David B. Bailey
    • G11B5/633 , G11B5/00
    • G11B5/633 , Y10S428/90 , Y10T428/25 , Y10T428/273 , Y10T428/31768
    • A method of making a transparent magnetic recording layer which comprises forming a concentrated aqueous magnetic dispersion (A) of from 10 to 50 percent by weight ferromagnetic particles having a specific surface area of at least 30 m.sup.2 /gm and from 0.5 to 20 percent by weight of a dispersing agent; adding the concentrated aqueous magnetic dispersion (A) to a viscosity increasing hydrophilic polymer in water (B) such that the concentration of the hydrophilic cobinder is from 0.5 to 3 percent by weight based on the total weight of (A) and (B); diluting the resulting dispersion (A) plus (B) with water to give a dispersion (C) having a concentration of from 0.5 to 5 percent by weight of ferromagnetic particles; preparing a final dispersion by adding to the dispersion (C) from 20 to 200 parts per 100 parts of dispersion (C) of an aqueous deionized gelatin solution having a pH value from 7 to 10 and containing from 2 to 15 percent by weight of gelatin and coating the final dispersion onto a substrate to give a dry coverage of from 700 mg/m.sup.2 to 3000 mg/m.sup.2 of solids.
    • 一种透明磁记录层的制造方法，其特征在于，形成浓度为10〜50重量％的比表面积为30m 2 / g以上且0.5〜20重量％的铁磁性颗粒的浓缩水性磁性分散体（A） 的分散剂; 将浓缩的水性磁性分散体（A）加入到水（B）中的增粘亲水性聚合物中，使得亲水性助磨剂的浓度为（A）和（B）的总重量的0.5〜3重量％。 用水稀释所得分散体（A）加（B），得到浓度为铁磁颗粒重量的0.5-5％的分散体（C）; 通过向分散体（C）添加20至200份/ 100份分散体（C）的分散体（C），其分散体（C）为pH值为7至10的含水去离子明胶溶液，并含有2至15重量％的明胶 并将最终分散体涂布在基材上，得到700mg / m 3至3000mg / m 2固体的干覆盖。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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