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公开(公告)号：US5217804A
公开(公告)日：1993-06-08
申请号：US609673
申请日：1990-11-06
IPC分类号： C01G49/00 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/706 , G11B5/712 , H01F1/11
CPC分类号： G11B5/70657 , G11B5/712 , Y10T428/257 , Y10T428/2991 , Y10T428/2993 , Y10T428/2998 , Y10T428/31507 , Y10T428/3154 , Y10T428/31544 , Y10T428/31591 , Y10T428/31598 , Y10T428/31609 , Y10T428/31786 , Y10T428/31797 , Y10T428/31891 , Y10T428/31971
摘要： Magnetic particles are cobalt surface treated gamma iron oxide (Fe.sub.2 O.sub.3) having a specific area of at least 30 m.sup.2 /g and a powder coercivity greater than about 450 Oe, the particles being coated with from about 10 to about 50% by weight of a material having a refractive index less than about the refractive index of a binder for the particles.
摘要翻译： 磁性颗粒是具有至少30m 2 / g的比表面积和大于约450Oe的粉末矫顽力的钴表面处理的γ氧化铁（Fe 2 O 3），该颗粒涂覆约10至约50％重量的材料 其折射率小于颗粒的粘合剂的折射率。
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2.发明授权
公开(公告)号：US5252441A
公开(公告)日：1993-10-12
申请号：US609672
申请日：1990-11-06
CPC分类号： G11B5/70673 , G03C5/14 , G11B5/633
摘要： A photographic element including a light-sensitive layer and a transparent magnetic layer wherein the magnetic particles in the transparent binder are cobalt surface treated gamma iron oxide (Fe.sub.2 O.sub.3) having a specific area of at least 30 m.sup.2 /g, the particles being coated with from about 10 to about 50% by weight of a material having a refractive index less than that of the binder, the particles having a powder coercivity greater than about 450 Oe.
摘要翻译： 包括感光层和透明磁性层的照相元件，其中透明粘合剂中的磁性颗粒是具有至少30m 2 / g比表面积的钴表面处理的γ氧化铁（Fe 2 O 3），颗粒由 约10至约50重量％的折射率小于粘合剂的材料，所述颗粒具有大于约450Oe的粉末矫顽力。
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公开(公告)号：US5498512A
公开(公告)日：1996-03-12
申请号：US402265
申请日：1995-03-10
IPC分类号： C09D5/23 , C09D7/12 , G03C1/00 , G03C7/00 , G03C11/02 , G11B5/627 , G11B5/633 , H04B1/707 , G03C1/76 , G11B5/708
摘要： A photographic element having a light-sensitive layer and a transparent magnetic recording layer, the transparent magnetic recording layer comprising ferromagnetic particles having a ferromagnetic core and a shell of tin oxide or metal antimonate in a binder.
摘要翻译： 具有感光层和透明磁记录层的照相元件，所述透明磁记录层包括在粘合剂中具有铁磁性核的铁磁颗粒和氧化锡或金属锑酸盐的壳。
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公开(公告)号：US5520954A
公开(公告)日：1996-05-28
申请号：US401518
申请日：1995-03-10
CPC分类号： G11B5/633 , Y10S428/90 , Y10T428/25 , Y10T428/273 , Y10T428/31768
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5792380A
公开(公告)日：1998-08-11
申请号：US846693
申请日：1997-04-30
申请人： Xin Wen , George L. Oltean , Robert O. James
发明人： Xin Wen , George L. Oltean , Robert O. James
CPC分类号： B41J2/17509 , B41J2/17566 , B41J2/195 , C09D11/38
摘要： An ink jet printing ink composition is disclosed for use with an ink jet printing apparatus comprising a printhead, an ink delivery system adapted to provide the ink to the printhead, and a sensor associated with the ink delivery system adapted to produce a signal which is characteristic of the concentration of a label material in a printing ink, where said signal is used to indicate the appropriateness of using a particular printing ink. The ink composition comprises a carrier, a colorant, and a predetermined concentration of a distinct label material, the weight ratio of the label material to the colorant being less than 1. The label material may be easily detected by a sensor associated with the ink delivery system.
摘要翻译： 公开了一种与喷墨打印设备一起使用的喷墨印刷油墨组合物，其包括打印头，适于向打印头提供油墨的油墨输送系统，以及与油墨输送系统相关联的传感器，其适于产生特征性的信号 印刷油墨中的标签材料的浓度，其中所述信号用于指示使用特定印刷油墨的适当性。 墨水组合物包含载体，着色剂和预定浓度的不同标签材料，标签材料与着色剂的重量比小于1.标签材料可以通过与墨水输送相关联的传感器容易地检测 系统。
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公开(公告)号：US06905761B2
公开(公告)日：2005-06-14
申请号：US10317514
申请日：2002-12-12
IPC分类号： G03C5/14 , G03C7/24 , G11B5/70 , G11B5/706 , G11B5/712 , B32B5/16 , B05D5/12 , C08K5/00 , G11B5/66
CPC分类号： G03C5/14 , G03C7/24 , G11B5/7013 , G11B5/706 , G11B5/712 , Y10T428/25 , Y10T428/26 , Y10T428/265
摘要： A concentrated fine solid particle dispersion useful for forming a substantially photographically transparent magnetic recording layer is disclosed, comprising an organic solvent medium containing a dispersing agent and dispersed magnetic particles, wherein the magnetic particles are present at a concentration of at least 25% by weight and the organic solvent medium is comprised primarily of organic solvent selected from dimethyl succinate, dimethyl glutarate and dimethyl adipate. This invention provides a stable concentrated dispersion of magnetic particles useful for preparing substantially photographically transparent magnetic recording layers. A film-forming binder solution can be added to dilute the concentrated dispersion, which then can be applied to a support to form a transparent magnetic layer for a magnetic recording element. This invention also provides a photographic element which contains a magnetic recording layer which has excellent magnetic characteristics and which is substantially photographically transparent by virtue of its low granularity and optical density.
摘要翻译： 公开了一种用于形成基本上为摄影透明的磁记录层的浓缩细小固体颗粒分散体，其包含含有分散剂和分散的磁性颗粒的有机溶剂介质，其中磁性颗粒以至少25重量％的浓度存在，以及 有机溶剂介质主要由选自琥珀酸二甲酯，戊二酸二甲酯和己二酸二甲酯的有机溶剂组成。 本发明提供用于制备基本上照相的透明磁记录层的磁性颗粒的稳定的浓缩分散体。 可以加入成膜粘合剂溶液以稀释浓缩的分散体，然后可以将其分散在载体上以形成用于磁记录元件的透明磁性层。 本发明还提供了一种照相材料，其含有磁记录层，该磁记录层具有优良的磁特性，并且由于其低颗粒度和光密度而基本上是摄影透明的。
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7.发明授权公开(公告)号：US06422702B1
公开(公告)日：2002-07-23
申请号：US09409292
申请日：1999-09-30
IPC分类号： G03B160
摘要： A method for monitoring the amount of unexposed photographic film remaining in a motion camera film magazine that includes the steps of: providing an unexposed motion picture film containing a support having at least one light sensitive image recording layer and a transparent magnetic recording layer; recording film length data on the transparent magnetic recording layer of the unexposed motion picture film; loading the unexposed motion picture film in a motion picture film magazine; and reading the film length data from the transparent magnetic recording layer as it is removed from the film supply magazine to provide an indication of the amount of unexposed film remaining in the motion picture film magazine. The amount of unexposed film remaining may be displayed in a read-out device associated with the film magazine or camera.
摘要翻译： 一种用于监视运动摄像机胶片盒中剩余的未曝光摄影胶片的量的方法，包括以下步骤：提供含有至少一个光敏图像记录层和透明磁记录层的载体的未曝光电影胶片; 在未曝光的电影胶片的透明磁记录层上记录胶片长度数据; 将未曝光的动态影像胶卷装入电影胶卷; 以及从透明磁记录层读取胶片长度数据时，从胶片供应盒中取出胶片长度数据，以提供剩余在电影胶片盒中的未曝光胶片的量的指示。 可以在与胶片盒或相机相关联的读出装置中显示剩余的未曝光胶片的量。
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公开(公告)号：US5434037A
公开(公告)日：1995-07-18
申请号：US252500
申请日：1994-06-01
CPC分类号： G11B5/633 , G03C1/7614 , G03C7/3029 , G11B5/7085 , G11B5/72
摘要： A photographic element comprising a support having provided thereon a light-sensitive layer, a transparent magnetic recording layer, and a transparent abrasive layer coated over the transparent magentic recording layer, the transparent magnetic recording layer comprising a transparent polymeric binder and ferro-magnetic particles having a surface area greater than 30 m.sup.2 /gm and a coverage of from about 1.times.10.sup.-11 mg/.mu.m.sup.3 to about 3.times.10.sup.-10 mg/.mu.m.sup.3, the abrasive layer comprising a transparent polymeric binder and abrasive particles having a median diameter of from about 0.2 to about 0.4 .mu.m, a specific surface area greater than 5 m.sup.2 /gm, a Mobs hardness of at least 6 and being present in an amount of at least about 5.times.10.sup.-12 mg/.mu.m.sup.3.
摘要翻译： 一种照相元件，包括其上设置有感光层，透明磁记录层和涂覆在透明磁记录层上的透明研磨层的支撑体，透明磁记录层包括透明聚合物粘合剂和铁磁性颗粒， 表面积大于30m2 / gm，覆盖率为约1×10-11mg /μm3至约3×10-10mg / m3，研磨层包含透明聚合物粘合剂和磨料颗粒，其中心直径为约 0.2至约0.4μm，比表面积大于5m 2 / gm，Mobs硬度至少为6，并且以至少约5×10 -12mg / m 3的量存在。
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公开(公告)号：US5432050A
公开(公告)日：1995-07-11
申请号：US193349
申请日：1994-02-08
IPC分类号： G03C1/00 , C09D5/23 , G03C5/14 , G03C7/24 , G11B5/633 , G11B5/708 , G11B5/714 , G11B5/738 , G03C1/76
摘要： A photographic element comprising a support having provided thereon a light-sensitive layer and a transparent magnetic recording layer, the magnetic recording layer comprising a transparent polymeric binder, ferro-magnetic particles and reinforcing filler particles, the magnetic particles having a surface area greater than 30 m.sup.2 /gm and a coverage of from about 1.times.10.sup.-11 mg/.mu.m.sup.3 to about 1.times.10.sup.-10 mg/.mu.m.sup.3, the filler particles having a median diameter less than 0.15 .mu.m, a Mohs hardness of at least 6 and being present in the transparent magnetic layer in an amount of about 20% to about 300% by weight based on the weight of the polymeric binder present.
摘要翻译： 一种照相元件，包括在其上设置有感光层和透明磁记录层的支撑体，所述磁记录层包括透明聚合物粘合剂，铁磁性颗粒和增强填料颗粒，磁性颗粒的表面积大于30 m2 / gm，覆盖范围为约1×10-11mg / m3至约1×10-10mg / m3，填料颗粒的中值粒径小于0.15μm，莫氏硬度至少为6，存在于 所述透明磁性层的量为所述聚合物粘合剂的重量的约20％至约300％。
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公开(公告)号：US5230818A
公开(公告)日：1993-07-27
申请号：US811386
申请日：1991-12-20
CPC分类号： G11B5/7028 , G11B5/7021 , G11B5/708 , G11B5/735 , G11B5/865 , Y10T428/31663
摘要： A coating composition is provided for master media for anhysteretic transfer of magnetically recorded information to a copy medium which comprises from about 50 to about 69% of a magnetic pigment, from about 2.95 to about 6.90% of an abrasive powder, from 0 to about 5.4% of a colloidal inorganic powder, from about 2.9 to about 4.5% of a wetting agent, from about 0.7 to about 3.1% of a lubricant, from about 14.1 to about 33.6% of a binder, at least 85% of which is a polyurethane and from 0.05 to about 15% of which is a polyisocyanate crosslinking agent. The composition is preferably disposed on a substrate backcoated with a composition containing from about 15 to about 25% of carbon black, from about 15 to about 25% of an inorganic filler, from about 0.5 to about 2% of an abrasive, from about 20 to about 30% of a vinyl copolymeric binder, from about 15 to about 25% of a polyurethane binder, from about 7.5 to about 17.5% of an NCO terminated crosslinking agent, from about 0.9 to about 2% of a lubricant, and from about 0.06 to about 0.6% of a coating aid. Master media for anhysteretic recording containing the coating composition of the invention and an anhysteretic duplicating system are also provided as are processes for preparing the coating compositions and master media and for anhysteretic duplication.
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