公开(公告)号：US4921727A

公开(公告)日：1990-05-01

申请号：US287355

申请日：1988-12-21

申请人： Pabitra Datta ,  Ronald N. Friel

发明人： Pabitra Datta ,  Ronald N. Friel

IPC分类号： C09K11/08 ,  C09K11/02 ,  H01J9/227 ,  H01J29/18 ,  H01J29/20

CPC分类号： C09K11/025

摘要： A method of surface-treating dry-powdered phosphor particles to control the triboelectric charge characteristics thereof includes the steps of providing the phosphor particles with a first coating of silica, dissolving a coupling agent selected from the group consisting of silanes and titanates in a suitable solvent to form a mixture, surface-coating the silica-coated phosphor particles with the mixture to provide a second coating of the coupling agent on the phosphor particles, filtering the surface-treated particles, rinsing the surface-treated particles with the solvent, and drying the surface-treated particles. The resultant dry-powdered surface-treated phosphor particles are used to make a luminescent viewing screen for a CRT. The coupling agent overlying the silica coating controls the triboelectric charging characteristics of the phosphor particles during the electrophotographic manufacturing of the screen.

摘要翻译： 对干粉状磷光体粒子进行表面处理以控制其摩擦带电特性的方法包括以下步骤：向磷光体颗粒提供第一次二氧化硅涂层，将选自硅烷和钛酸盐的偶联剂溶解于合适的溶剂中 以形成混合物，用混合物表面涂覆二氧化硅涂覆的荧光体颗粒，以在荧光体颗粒上提供偶联剂的第二涂层，过滤表面处理的颗粒，用溶剂漂洗表面处理的颗粒，并干燥 经表面处理的颗粒。 所得干粉末表面处理荧光体颗粒用于制造用于CRT的发光观察屏。 覆盖二氧化硅涂层的偶联剂在屏幕的电子照相制造期间控制荧光体颗粒的摩擦带电特性。

公开(公告)号：US4416807A

公开(公告)日：1983-11-22

申请号：US311257

申请日：1981-10-14

申请人： Pabitra Datta ,  Ronald N. Friel

发明人： Pabitra Datta ,  Ronald N. Friel

IPC分类号： B29C43/00 ,  C08K3/04 ,  C08L57/00 ,  H01B1/24 ,  H01B1/06

CPC分类号： H01B1/24 ,  B29C43/003 ,  C08K3/04 ,  C08L57/00 ,  B29K2025/00 ,  B29K2033/04 ,  B29L2017/00

摘要： Conductive information discs comprised of conductive particles such as carbon black dispersed in a stable thermoplastic material comprising a homopolymer of styrene, an acrylic acid ester, or a methacrylic acid ester, a copolymer of styrene and acrylonitrile, an acrylic acid ester, or a methacrylic acid ester, or mixtures thereof, is disclosed.

摘要翻译： 包含分散在稳定的热塑性材料中的导电颗粒如炭黑的导电信息盘包括苯乙烯均聚物，丙烯酸酯或甲基丙烯酸酯，苯乙烯和丙烯腈的共聚物，丙烯酸酯或甲基丙烯酸 酯或其混合物。

公开(公告)号：US5093217A

公开(公告)日：1992-03-03

申请号：US420062

申请日：1989-10-11

申请人： Pabitra Datta ,  Randall E. McCoy ,  Ronald N. Friel ,  John A. van Raalte ,  Wilber C. Stewart

发明人： Pabitra Datta ,  Randall E. McCoy ,  Ronald N. Friel ,  John A. van Raalte ,  Wilber C. Stewart

IPC分类号： G03G15/06 ,  G03G15/08 ,  H01J9/22 ,  H01J9/227

CPC分类号： H01J9/225 ,  G03G15/065 ,  G03G15/08 ,  H01J9/2276

摘要： An apparatus for electrophotographically manufacturing a luminescent screen assembly on a substrate for use within a CRT includes a developer for developing a photoconductive layer, having a latent image thereon, with a dry-powdered, triboelectrially-charged screen structure materials. The photoconductive layer overlies a conductive layer in contact with the substrate. A grid-developing electrode is located at a distance from the photoconductive layer that is large relative to the smallest dimension of the latent image. The electrode is biased with a suitable potential to influence the deposition of the charged screen structure materials onto the latent image on the photoconductive layer. A method for electrophotographically manufacturing the screen assembly utilizing the grid-developing electrode is also disclosed.

摘要翻译： 用于电子照相制造用于CRT内的基板上的发光屏组件的装置包括用干粉末状的三氟电极屏蔽结构材料显影其上具有潜像的光电导层的显影剂。 光电导层覆盖与衬底接触的导电层。 栅极显影电极位于距离光电导层一定距离处，该距离相对于潜像的最小尺寸较大。 电极被偏压以适当的电势来影响带电的屏幕结构材料沉积到光电导层上的潜像上。 还公开了一种利用栅格显影电极电子照相制造屏幕组件的方法。

公开(公告)号：US4975619A

公开(公告)日：1990-12-04

申请号：US455055

申请日：1989-12-22

申请人： Pabitra Datta ,  Ronald N. Friel

发明人： Pabitra Datta ,  Ronald N. Friel

IPC分类号： C09K11/02

CPC分类号： C09K11/025

摘要： A method of surface-treating dry-powdered phosphor particles to control the triboelectric charge characteristics thereof includes the steps of providing the phosphor particles with a first coating of silica, dissolving a coupling agent selected from the group consisting of silanes and titanates in a suitable solvent to form a mixture, surface-coating the silica-coated phosphor particles with the mixture to provide a second coating of the coupling agent on the phosphor particles, filtering the surface-treated particles, rinsing the surface-treated particles with the solvent, and drying the surface-treated particles. The resultant dry-powdered surface-treated phosphor particles are used to make a luminescent viewing screen for a CRT. The coupling agent overlying the silica coating controls the triboelectric charging characteristics of the phosphor particles during the electrophotographic manufacturing of the screen.

公开(公告)号：US4921767A

公开(公告)日：1990-05-01

申请号：US287356

申请日：1988-12-21

申请人： Pabitra Datta ,  Ronald N. Friel

发明人： Pabitra Datta ,  Ronald N. Friel

IPC分类号： C09K11/00 ,  H01J9/22 ,  H01J9/227

CPC分类号： H01J9/2276 ,  H01J9/225

摘要： The method of electrophotographically manufacturing a screen assembly on a substrate for use within a CRT, according to the present invention, includes the steps of sequentially coating a substrate with a conductive layer and an overcoating of a photoconductive layer, establishing an electrostatic charge on the photoconductive layer, and exposing selected areas of the photoconductive layer to visible light to affect the charge thereon. Then the photoconductive layer is developed with a charged screen structure material. The improved process utilizes a dry-powdered screen structure material having at least a surface charge control agent thereon to control the triboelectrical charging of the screen structure material.

公开(公告)号：US4378310A

公开(公告)日：1983-03-29

申请号：US172660

申请日：1980-07-28

申请人： Pabitra Datta ,  Nestor A. Arroyo ,  Ronald N. Friel

发明人： Pabitra Datta ,  Nestor A. Arroyo ,  Ronald N. Friel

IPC分类号： C08L25/12 ,  C08L27/06 ,  C08L55/02 ,  G11B9/06 ,  H01B1/06

CPC分类号： G11B9/068 ,  C08L27/06 ,  C08L2205/02 ,  C08L25/12 ,  C08L55/02

摘要： An improved molding composition having a high thermal stability, including a vinyl chloride/vinyl acetate copolymer-based resin, sufficient finely divided conductive particles to obtain the desired conductivity, and from 3 to 20 weight percent of the modifying additive BLENDEX 586, which is a three-component blend of polyvinyl chloride, a graft copolymer of acrylonitrile, styrene and polybutadiene, and a copolymer of alpha-methyl styrene and acrylonitrile, as described in U.S. Pat. No. 3,053,800. High density information discs fabricated from this molding composition have improved dimensional stability and increased resistance to environmental temperature changes.

摘要翻译： 具有高热稳定性的改进的模塑组合物，包括氯乙烯/乙酸乙烯酯共聚物基树脂，足够精细分散的导电颗粒以获得所需的导电率，和3至20重量％的改性添加剂BLENDEX 586，其为 如聚氯乙烯的三组分共混物，丙烯腈，苯乙烯和聚丁二烯的接枝共聚物，以及α-甲基苯乙烯和丙烯腈的共聚物，如美国专利No. 3,053,800。 由该模塑组合物制造的高密度信息盘具有改进的尺寸稳定性和增加的耐环境温度变化的抗性。

公开(公告)号：US4560601A

公开(公告)日：1985-12-24

申请号：US636310

申请日：1984-07-31

申请人： Pabitra Datta

发明人： Pabitra Datta

IPC分类号： C10M169/04 ,  G11B3/70 ,  B32B3/02

CPC分类号： C10M169/04 ,  C10M2209/00 ,  C10M2209/02 ,  C10M2209/10 ,  C10M2209/103 ,  C10M2215/16 ,  C10M2215/202 ,  C10M2215/204 ,  C10M2215/22 ,  C10M2215/221 ,  C10M2215/225 ,  C10M2215/226 ,  C10M2215/30 ,  C10M2229/025 ,  C10M2229/0405 ,  C10M2229/0415 ,  C10M2229/0425 ,  C10M2229/0435 ,  C10M2229/0445 ,  C10M2229/0455 ,  C10M2229/0465 ,  C10M2229/0475 ,  C10M2229/0485 ,  C10M2229/0505 ,  C10M2229/0515 ,  C10M2229/0525 ,  C10M2229/0535 ,  C10M2229/0545 ,  C10N2240/00 ,  C10N2240/22 ,  C10N2240/30 ,  C10N2240/50 ,  C10N2240/52 ,  C10N2240/54 ,  C10N2240/56 ,  C10N2240/58 ,  C10N2240/60 ,  C10N2240/66 ,  C10N2250/121 ,  Y10T428/31663 ,  Y10T428/31667

摘要： High-density information records are lubricated with a methyl alkyl siloxane lubricant containing an effective amount of a donor-acceptor complex to reduce moisture sensitivity.

摘要翻译： 使用含有有效量的供体 - 受体复合物的甲基烷基硅氧烷润滑剂润滑高密度信息记录以降低湿度敏感性。

公开(公告)号：US4097617A

公开(公告)日：1978-06-27

申请号：US831147

申请日：1977-09-07

申请人： Pabitra Datta

发明人： Pabitra Datta

IPC分类号： G03G9/113 ,  G03G9/10 ,  G03G9/14

CPC分类号： G03G9/1138 ,  G03G9/1134 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2996 ,  Y10T428/2998

摘要： Coated carrier particles for use in an electrophotographic process are prepared by applying a thin coating of a phosphonitrile fluoroelastomer to the surface of the carrier particles. The coated carriers are long lived and capable of imparting a negative triboelectric charge to electroscopic powders mixed therewith.

摘要翻译： 通过在载体颗粒的表面施加薄的磷腈氟弹性体涂层来制备用于电子照相方法的涂覆载体颗粒。 涂覆的载体是长寿命的并且能够对与其混合的电磁粉末赋予负的摩擦电荷。

公开(公告)号：US4055684A

公开(公告)日：1977-10-25

申请号：US682310

申请日：1976-05-03

申请人： Evan Serge Baltazzi ,  Pabitra Datta

发明人： Evan Serge Baltazzi ,  Pabitra Datta

IPC分类号： G03G9/113 ,  G03G13/09 ,  G03G9/10 ,  G03G9/14

CPC分类号： G03G13/09 ,  G03G9/1132 ,  Y10T428/2998

摘要： Carrier particles for use in an electrophotographic process are prepared by coating a particulate matrix with an ion exchange resin dispersed in a polymeric binder. The resulting coated carrier particles are long lived and depending upon the choice of ion exchange resin can be used to impart a positive or negative triboelectric charge of the magnitude desired to electroscopic powders mixed therewith.

摘要翻译： 通过用分散在聚合物粘合剂中的离子交换树脂涂覆颗粒基质来制备用于电子照相方法的载体颗粒。 所得到的涂覆载体颗粒长寿命，并且取决于离子交换树脂的选择可以用于赋予与其混合的电磁粉末所需量级的正或负摩擦电荷。

公开(公告)号：US06802313B2

公开(公告)日：2004-10-12

申请号：US10047183

申请日：2001-10-23

申请人： Timothy Allen Pletcher ,  Pabitra Datta ,  Christopher Just Poux ,  Randall Eugene McCoy

发明人： Timothy Allen Pletcher ,  Pabitra Datta ,  Christopher Just Poux ,  Randall Eugene McCoy

IPC分类号： A61M1500

CPC分类号： A61K9/0075 ,  A61J3/00 ,  A61K9/0073 ,  A61M15/0045 ,  A61M15/0048 ,  A61M15/02 ,  A61M15/025 ,  B05B5/025 ,  B05B5/047 ,  G03G15/04045 ,  G03G15/221 ,  G03G15/323

摘要： Apparatus and a concomitant method for electrostatically depositing select doses of medicament powder at select locations on a substrate. Specifically, the apparatus contains a charged particle emitter for generating charged particles that charge a predefined region of a substrate and a charge accumulation control circuit for computing the amount of charge accumulated upon the substrate and deactivating the emitter when a selected quantity of charge has accumulated. Additionally, a triboelectric charging apparatus charges the medicament powder and forms a charged medicament cloud proximate the charged region of the substrate. The medicament particles within the medicament cloud electrostatically adhere to the charged region. The quantity of charge accumulated on the substrate at the predefined region and the charge-to-mass ratio of the medicament powder in the cloud control the amount (dose) of medicament deposited and retained by the substrate. Consequently, this apparatus accurately controls both medicament dosage and deposition location. Furthermore, since the substrate can be of any dielectric material that retains an electrostatic charge, the apparatus can be used to deposit medicament on substrates that are presently used in oral medicament consumption, e.g., substrates that are used to fabricate suppositories, inhalants, tablets, capsules and the like.

摘要翻译： 用于在基底上的选定位置静电沉积选择剂量的药物粉末的装置和伴随方法。 具体地，该装置包含用于产生对基板的预定区域充电的带电粒子的带电粒子发射器和用于计算在基板上累积的电荷量并且在已选择的电荷积累时停用发射极的电荷累积控制电路。 此外，摩擦带电装置对药物粉末进行充电，并在基底的带电区域附近形成带电药物云。 药物云内的药物颗粒静电附着到带电区域。 在预定区域上积累在基底上的电荷量和云中的药物粉末的电荷与质量比控制由基底沉积和保留的药物的量（剂量）。 因此，该装置精确地控制药物剂量和沉积位置。 此外，由于衬底可以是保持静电电荷的任何电介质材料，所以该装置可用于在目前用于口服药物消耗的基底上沉积药物，例如用于制造栓剂，吸入剂，片剂， 胶囊等。