公开(公告)号：US06372338B1

公开(公告)日：2002-04-16

申请号：US09196009

申请日：1998-11-19

申请人： Frederick J. Jeffers ,  Bradford D. West ,  Robert O. James ,  Frederick R. Chamberlain, IV ,  Neil Smith ,  Ronald M. Wexler

发明人： Frederick J. Jeffers ,  Bradford D. West ,  Robert O. James ,  Frederick R. Chamberlain, IV ,  Neil Smith ,  Ronald M. Wexler

IPC分类号： G11B05714

CPC分类号： G11B5/633 ,  G03C5/14 ,  G03C11/02 ,  G06K19/06196 ,  G11B5/70678 ,  G11B5/714 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/257

摘要： A particulate magnetic recording media wherein the magnetic particles are substantially spherical. The spherical particle shape makes possible a media which is magnetically isotropic, well dispersed and low in noise, and free of magnetically inferior broken particles.

摘要翻译： 一种颗粒状磁记录介质，其中磁性颗粒基本上是球形的。 球形颗粒形状使磁性各向同性，分散性好，噪音低，无劣质破碎颗粒的介质成为可能。

公开(公告)号：US5792725A

公开(公告)日：1998-08-11

申请号：US719046

申请日：1996-09-24

申请人： William Henry Simpson ,  Bradford D. West ,  Mary-Irene Elizabeth Condo

发明人： William Henry Simpson ,  Bradford D. West ,  Mary-Irene Elizabeth Condo

IPC分类号： B41M5/00 ,  B41M5/382 ,  B41M5/52 ,  B41M5/035 ,  B41M5/38

CPC分类号： B41M5/5272 ,  B41M5/38207 ,  B41M5/5218 ,  Y10S428/913 ,  Y10S428/914 ,  Y10T428/24893 ,  Y10T428/31507

摘要： An identification card comprising a card stock comprising a plastic material having magnetic particles uniformly dispersed throughout, the card stock also having an image-receiving layer located on the outermost surface of at least one side of the card stock, the image-receiving layer comprising a polycarbonate having a Tg of less than about 80.degree. C.

摘要翻译： 一种识别卡，包括卡片原料，其包含具有均匀分散的磁性颗粒的塑料材料，卡片纸还具有位于卡片纸的至少一侧的最外表面上的图像接收层，图像接收层包括 Tg小于约80℃的聚碳酸酯

公开(公告)号：US5485335A

公开(公告)日：1996-01-16

申请号：US308878

申请日：1994-09-19

申请人： Bradford D. West

发明人： Bradford D. West

IPC分类号： G11B5/127 ,  C04B35/462 ,  G11B5/10 ,  G11B5/187 ,  C04B35/36

CPC分类号： C04B35/462 ,  G11B5/10 ,  Y10T428/24372 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/252

摘要： There is disclosed a magnetic head particularly suited for high frequency applications. The head has a ceramic body of a new ceramic material which provides longer service life together with a high level of operating efficiency and cost effectiveness. The head includes a core of magnetic material, such as thin layers of the metal FeAlSi, bonded to pieces of the ceramic material. The coefficients of thermal expansion of the ceramic and the core are suitably matched to permit wide temperature excursions (e.g., 500.degree. C.) during manufacture of the head. The ceramic is a matrix of a material such as a metal titanate in which are distributed hard inclusions such as a metal oxide which are tightly bound to the matrix to preclude pull out of the inclusions during machining of the ceramic. The wear resistance and other characteristics of the magnetic head are greatly improved compared to a comparable head made with manganese nickel oxide ceramic, for example.

摘要翻译： 公开了一种特别适用于高频应用的磁头。 头部具有陶瓷体，新陶瓷材料具有更长的使用寿命，并具有高水平的运行效率和成本效益。 头部包括磁性材料芯，例如金属FeAlSi的薄层，粘合到陶瓷材料片上。 陶瓷和芯的热膨胀系数适当匹配，以允许在制造头期间的宽温度偏移（例如500℃）。 陶瓷是诸如金属钛酸盐的材料的基体，其中分布有硬质夹杂物，例如与基体紧密结合的金属氧化物，以防止在陶瓷加工期间拉出夹杂物。 例如，与使用锰氧化镍陶瓷制成的类似头相比，磁头的耐磨性和其它特性大大提高。

公开(公告)号：US5879775A

公开(公告)日：1999-03-09

申请号：US764426

申请日：1996-12-12

申请人： Lee Walter ,  Bradford D. West

发明人： Lee Walter ,  Bradford D. West

IPC分类号： B42D15/10 ,  C23C16/18 ,  C23C16/26 ,  C23C16/27 ,  C23C16/30 ,  C23C16/32 ,  C23C16/34 ,  C23C16/50 ,  G06K19/04 ,  B32B3/02

CPC分类号： C23C16/26 ,  C23C16/30 ,  C23C16/325 ,  C23C16/345 ,  G06K19/041 ,  Y10T428/239 ,  Y10T428/24975 ,  Y10T428/265 ,  Y10T428/2982 ,  Y10T428/30

摘要： A plastic structure comprising:a plastic media, such as a plastic card; anda thin film amorphous inorganic or DLC coating on the plastic media, the coating being hard, transparent or semi-transparent, and wear resistant.

摘要翻译： 一种塑料结构，包括：塑料介质，例如塑料卡; 以及在塑料介质上的薄膜无定形无机或DLC涂层，该涂层是硬的，透明的或半透明的，并且具有耐磨性。