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    • 2. 发明申请
    • Chip inductor and method for manufacturing the same
    • 片式电感及其制造方法
    • US20070069844A1
    • 2007-03-29
    • US10556700
    • 2004-11-17
    • Hayami KudoMasahiko KawaguchiYasuhiro Nakata
    • Hayami KudoMasahiko KawaguchiYasuhiro Nakata
    • H01F27/02
    • H01F17/0013H01F41/041H01F2017/002
    • A chip inductor in which excellent Q characteristic is realized while advantages in its small size and low profile are ensured, as well as a method for manufacturing the same, is provided. A chip inductor 1 is constructed by alternately laminating plural conductor patterns 31, 32, 33, and 34 and plural insulating layers 35, 36, 37, and 38 on and above a ceramic substrate 2, and connecting these plural conductor patterns 31, 32, 33, and 34 to each other in series in the lamination direction thereof so as to constitute a coil 30. Specifically, the number of turns of the lowermost-layer conductor pattern 31 disposed immediately on the ceramic substrate 2 is specified to be larger than the numbers of turns of the other plural conductor patterns 32, 33, and 34, and the numbers of turns of the other plural conductor patterns 32, 33, and 34 are specified to be substantially equal to each other. Preferably, the number of turns of the conductor pattern 31 is specified to be about 1.5 times the numbers of turns of the other plural conductor patterns 32, 33, and 34.
    • 提供确保了其小尺寸和低外形优点的优异Q特性的片式电感器及其制造方法。 芯片电感器1是通过在陶瓷基板2上和之上交替层叠多个导体图案31,32,33,34以及多个绝缘层35,36,37,38并将这些多个导体图案31,32,32,38连接起来而构成的。 33和34彼此在层叠方向上串联以构成线圈30.具体地说,紧接在陶瓷基板2上设置的最下层导体图案31的匝数被规定为大于 其他多个导体图案32,33,34的匝数和其他多个导体图案32,33,34的匝数被规定为大致相等。 优选地,导体图案31的匝数被规定为其他多个导体图案32,33和34的匝数的约1.5倍。
    • 3. 发明授权
    • Switching power supply device
    • 开关电源装置
    • US08339809B2
    • 2012-12-25
    • US12721963
    • 2010-03-11
    • Yasuhiro Nakata
    • Yasuhiro Nakata
    • H02M3/335
    • H02M3/3385H02M1/36
    • A switching power supply device includes a transformer, a switching unit which is connected with a primary winding of the transformer and configured to switch a current flowing to the primary winding, a start unit configured to start the switching unit, a voltage drop unit configured to lower output voltage from a secondary winding of the transform, and a current control unit configured to control an amount of a current flowing in the start unit when the switching unit is in an off state by lowering output voltage by the voltage drop unit.
    • 开关电源装置包括变压器,开关单元,其与变压器的初级绕组连接并且被配置为切换流过初级绕组的电流;起动单元,被配置为启动开关单元;电压降单元,被配置为 所述变流器的次级绕组的输出电压较低;以及电流控制单元,被配置为通过降低所述电压降单元的输出电压来控制在所述开关单元处于断开状态时流过所述启动单元的电流量。
    • 6. 发明授权
    • Multilayer noise filter including integral damping resistor
    • 多层噪声滤波器,包括积分阻尼电阻
    • US6160461A
    • 2000-12-12
    • US67441
    • 1998-04-28
    • Takahiro AzumaYasuhiro Nakata
    • Takahiro AzumaYasuhiro Nakata
    • H01F27/00H01F17/00H01G4/40H03H7/06H03H7/075
    • H03H7/06
    • A multilayer noise filter includes a damping resistor which is arranged to control the distortion of the waveform of an output signal and eliminate a space required for installation of the damping resistor on a substrate upon which the filter is mounted. The axial direction of coils incorporated in inductor assemblies is substantially perpendicular to external input and output electrodes. One end of one coil is electrically connected to the external input electrode and one end of another coil is electrically connected to the external output electrode. The other ends of the coils are electrically connected to a resistor at different locations, respectively. The resistor connecting the external input and output electrodes is disposed on the top surface of a multilayer unit such that the resistor is substantially parallel to the stacking direction of the multilayer unit and the axial direction of the coils. In a capacitor assembly, a pair of capacitor conductors are arranged to face each other.
    • 多层噪声滤波器包括阻尼电阻器,其被布置成控制输出信号的波形的失真,并消除在安装滤波器的基板上安装阻尼电阻所需的空间。 结合在电感器组件中的线圈的轴向方向基本上垂直于外部输入和输出电极。 一个线圈的一端电连接到外部输入电极,另一个线圈的一端电连接到外部输出电极。 线圈的另一端分别电连接到不同位置处的电阻器。 连接外部输入和输出电极的电阻器设置在多层单元的顶表面上,使得电阻器基本上平行于多层单元的层叠方向和线圈的轴向。 在电容器组件中,一对电容器导体被布置成彼此面对。
    • 7. 发明授权
    • LC filter with a parallel ground electrode
    • 带有平行接地电极的LC滤波器
    • US6133809A
    • 2000-10-17
    • US844644
    • 1997-04-21
    • Takashi TomohiroTakahiro AzumaHidetoshi YamamotoToshimi KanekoYasuhiro Nakata
    • Takashi TomohiroTakahiro AzumaHidetoshi YamamotoToshimi KanekoYasuhiro Nakata
    • H03H7/01A03H7/01
    • H03H7/0115H03H2001/0085
    • An LC filter is disclosed which exhibits excellent attenuation characteristics in a high-frequency range and substantially preserves its self-inductance and Q-factor. The LC filter is constructed of a laminated block formed by laminating insulating sheets each provided with a coil conductor. The coil conductors are connected in series to each other through via-holes to form a coil. Input/output external electrodes and ground external electrodes are disposed on the surfaces of the laminated block. The insulating sheets are laminated in a direction perpendicular to the input/output external electrodes and parallel to the mounting surface. The coil is axially placed perpendicular to the input/output external electrodes and parallel to the ground external electrodes and the mounting surface. A distributed capacitance is generated between the coil and each of the ground external electrodes to form a capacitor.
    • 公开了一种LC滤波器,其在高频范围内表现出优异的衰减特性并且基本上保持其自感和Q因子。 LC滤波器由层叠绝缘片形成的层叠块构成,每个绝缘片均设置有线圈导体。 线圈导体通过通孔彼此串联连接以形成线圈。 输入/输出外部电极和接地外部电极设置在层叠块的表面上。 绝缘片在与输入/输出外部电极垂直的方向上层叠,并平行于安装表面。 线圈垂直于输入/输出外部电极并平行于接地外部电极和安装表面轴向放置。 在线圈和每个接地外部电极之间产生分布电容以形成电容器。
    • 10. 发明授权
    • Image-forming apparatus having pre-charge exposure device for image carrier
    • 图像形成装置具有用于图像载体的预充电曝光装置
    • US07031641B2
    • 2006-04-18
    • US10835303
    • 2004-04-28
    • Hisashi NakaharaYasunori ChigonoYasuhiro Nakata
    • Hisashi NakaharaYasunori ChigonoYasuhiro Nakata
    • G03G21/00G03G15/24
    • G03G15/0225G03G2221/0005
    • An image-forming apparatus includes a pre-charge exposure device which removes electric charge from a photoconductor drum to increase a potential contrast between the surface of the photoconductor drum and the surface of a charge roller in an upstream region of a nip region between the photoconductor drum and the charge roller in the rotating direction of the photoconductor drum, so that toner accumulating in an upstream region of the nip region in the rotating direction of the photoconductor drum is restrained and prevented from being discharged onto an image-forming region. When the toner accumulating in the upstream region of the nip region in the rotating direction of the photoconductor drum is to be discharged onto a non-image-forming region, the pre-charge exposure device is turned off so that the potential contrast decreases.
    • 图像形成装置包括预充电曝光装置,其从感光鼓移除电荷,以增加感光鼓的表面与感光鼓之间的压区的上游区域中的充电辊的表面之间的潜在对比度 鼓和充电辊在感光鼓的旋转方向上,使得在感光鼓的旋转方向上积聚在夹持区域的上游区域中的调色剂被抑制并防止被排出到图像形成区域。 当在感光鼓的旋转方向上积聚在夹持区域的上游区域中的调色剂被排出到非图像形成区域时,预充电曝光装置被关闭,使得电位对比度降低。