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    • 1. 发明授权
    • Electrophotographic apparatus
    • 电子照相设备
    • US4205912A
    • 1980-06-03
    • US739949
    • 1976-11-08
    • Yasuhiro YamaguchiMamoru BabaTetsuo InoueMitsuaki Koyama
    • Yasuhiro YamaguchiMamoru BabaTetsuo InoueMitsuaki Koyama
    • G03G15/30G03G21/00G03G21/10
    • G03G15/30G03G21/0047G03G2221/0005
    • An electrophotographic apparatus includes a photoconductive drum capable of rotating at least two rotations during a series of copying processes, a first charging device for charging the surface of the drum in a negative polarity, a first exposing device, a development device having a magnetic brush unit, and a second charging device for transferring image. A second exposing device is provided to expose the entire surface of the photoconductive drum together with the residual toner after the image transfer process during the second rotation of the photoconductive drum. A third charging device is provided to supply positive charges to the surface of the drum and the residual toner after the second exposure. The residual toner is removed from the photoconductive drum by the above described magnetic brush unit charged in the same negative polarity with that of the first charging device and the image transfer device.
    • 一种电子照相设备包括一个能够在一系列复印过程中转动至少两次旋转的感光鼓,用于以负极性对鼓的表面充电的第一充电装置,第一曝光装置,具有磁刷单元的显影装置 以及用于传送图像的第二充电装置。 提供第二曝光装置以在感光鼓的第二次旋转期间在图像转印处理之后将感光鼓的整个表面与残留调色剂一起曝光。 提供第三充电装置以在第二次曝光之后向滚筒表面和残留调色剂提供正电荷。 通过上述与第一充电装置和图像转印装置相同的负极性充电的磁刷单元,从感光鼓中除去残留调色剂。
    • 3. 发明申请
    • Piezoelectric resonator and elastic wave device
    • 压电谐振器和弹性波器件
    • US20120181899A1
    • 2012-07-19
    • US13374773
    • 2012-01-11
    • Mitsuaki Koyama
    • Mitsuaki Koyama
    • H01L41/04
    • H03H9/177H03H9/02086H03H9/132
    • The generation of secondary vibration different in oscillation frequency from primary vibration is suppressed. In a quartz-crystal resonator in which excitation electrodes are formed respectively on both surfaces of a quartz-crystal piece whose primary vibration is thickness shear vibration, a hole portion is formed at a portion, in the excitation electrode, where secondary vibration is generated, and a concave portion is formed in a region, in the quartz-crystal piece, corresponding to the hole portion. Alternatively, a convex portion are preferably provided symmetrically with respect to a center of the quartz-crystal resonator. Consequently, the secondary vibration attenuates and the oscillation frequency of the secondary vibration shifts to a high frequency side.
    • 抑制振动频率与主振动不同的二次振动的产生。 在主振动为厚度剪切振动的石英晶片的两面分别形成激励电极的石英晶体谐振器中,在产生二次振动的激励电极的一部分形成有孔部, 并且在石英晶片中的与孔部对应的区域中形成凹部。 或者,优选相对于石英晶体谐振器的中心对称地设置凸部。 因此,二次振动衰减,二次振动的振荡频率向高频侧移动。
    • 4. 发明申请
    • Quartz sensor and sensing device
    • 石英传感器和传感装置
    • US20100263437A1
    • 2010-10-21
    • US12798556
    • 2010-04-07
    • Mitsuaki Koyama
    • Mitsuaki Koyama
    • G01N29/02
    • G01N29/2443G01N29/022G01N2291/014G01N2291/02466G01N2291/02809
    • To provide a quartz sensor capable of detecting a sensing target with high sensitivity also in measurement in a liquid phase in which a difference in Q values at the time of measurement in the liquid phase and in a vapor phase is small. In a quartz sensor 1 including an AT-cut quartz plate 11 having a capture layer (absorbing layer) 12 formed on one surface (XZ′ surface) thereof and detecting a sensing target based on an amount of change in a frequency of a quartz resonator 10 caused when the sensing target is absorbed by the capture layer 12, there are formed electrodes 13 for oscillating the quartz plate 11 on end faces (XY′ surfaces) mutually opposite in a Z′ direction of the surface of the quartz resonator 10 on which the capture layer 12 is formed (XZ′ surface).
    • 为了提供能够在液相中和在气相中的测量时的Q值的差小的液相中的测量中,能够以高灵敏度检测感测对象的石英传感器。 在包括形成在其一个表面(XZ'表面)上的捕获层(吸收层)12的AT切割石英板11的石英传感器1中,并且基于石英谐振器的频率变化量检测感测对象 当感测对象被捕获层12吸收时,形成的电极13形成电极13,用于在石英谐振器10的表面的Z'方向上相互相对的端面(XY'表面)上振荡石英板11, 形成捕获层12(XZ'表面)。
    • 7. 发明授权
    • Piezoelectric oscillator
    • 压电振荡器
    • US08242856B2
    • 2012-08-14
    • US12927888
    • 2010-11-29
    • Mitsuaki KoyamaShigetaka KagaKazuo AkaikeShigenori Watanabe
    • Mitsuaki KoyamaShigetaka KagaKazuo AkaikeShigenori Watanabe
    • H03B5/32
    • H03L1/04H03H9/0509H03H9/1021H03H9/132H03H9/19H03L1/023H03L1/025
    • There is provided a temperature compensated piezoelectric oscillator which excels in frequency stability and has a good electronic noise characteristic, and with which a circuit can be structured simply. An auxiliary oscillator unit 21 sharing a crystal substrate 2 with a main oscillator unit 11 outputting a set frequency f0 to an outside is used as a temperature detecting unit 32 detecting a temperature T for obtaining a compensation voltage ΔV in a temperature compensated piezoelectric oscillator (TCXO), and electrodes 13, 23 of the main oscillator unit 11 and the auxiliary oscillator unit 21 are provided separately on the crystal substrate 2. For example, a fundamental wave and an overtone are used or a thickness shear vibration and a contour shear vibration are used in the main oscillator unit 11 and the auxiliary oscillator unit 21, respectively.
    • 提供了一种温度补偿压电振荡器,其频率稳定性优异并且具有良好的电子噪声特性,并且可以简单地构造电路。 使用共用晶体基板2的辅助振荡器单元21与将外部设定频率f0的主振荡器单元11共同作为温度检测单元32,检测用于获得温度补偿压电振荡器中的补偿电压&Dgr; V的温度T (TCXO)和主振荡器单元11和辅助振荡器单元21的电极13,23分别设置在晶体基板2上。例如,使用基波和泛音,或者使用厚度剪切振动和轮廓剪切 在主振荡器单元11和辅助振荡器单元21中分别使用振动。
    • 8. 发明授权
    • Quartz sensor and sensing device
    • 石英传感器和传感装置
    • US07677087B2
    • 2010-03-16
    • US11792966
    • 2005-12-14
    • Shunichi WakamatsuMitsuaki KoyamaTsuyoshi Shiobara
    • Shunichi WakamatsuMitsuaki KoyamaTsuyoshi Shiobara
    • G01N29/028G01N29/032G01N29/036
    • G01N29/036G01N29/022G01N29/222G01N2291/0256
    • Provided is a Angevin type quartz sensor which is high in measurement sensitivity, suppresses the influence of the surface tension of a sample solution during measurement, and enables an installed quartz resonator to stable oscillate. An opposing surface portion opposes one surface side of the quartz resonator via a housing area and a pouring opening formed in the outside area of the opposing surface portion. Measurement is conducted in a standstill state where the sample solution is filled in the lower side of the opposing surface portion. Since stress due to the surface tension of the sample solution does not act in this state, the quartz resonator can oscillate with reliability. Therefore, the quartz sensor can reduced the thickness of the quartz resonator, which realizes highly sensitive and highly accurate measurement.
    • 提供了一种测量灵敏度高的昂格温型石英传感器,抑制了测量时样品溶液的表面张力的影响,并且使得安装的石英谐振器能够稳定地振荡。 相对的表面部分经由壳体区域和形成在相对表面部分的外部区域中的倾倒开口与石英谐振器的一个表面侧相对。 在停止状态下进行测量,其中样品溶液填充在相对表面部分的下侧。 由于在该状态下由于样品溶液的表面张力引起的应力不起作用,所以石英谐振器可以可靠地摆动。 因此,石英传感器可以减小石英谐振器的厚度,实现了高灵敏度和高精度的测量。
    • 9. 发明授权
    • Quartz crystal unit
    • 石英晶体单位
    • US06300707B1
    • 2001-10-09
    • US09750769
    • 2001-01-02
    • Sachiko TakehanaMitsuaki KoyamaShigeru Obara
    • Sachiko TakehanaMitsuaki KoyamaShigeru Obara
    • H01L4108
    • H03H3/04
    • A quartz crystal unit with favorable frequency variation characteristics in response to changes in temperature and changes over time. A pair of lead wires provided perpendicularly to a base and a pair of supporters supported on the pair of lead wires are used for holding and electrically connecting a quartz blank at opposite points on the periphery thereof to which leading electrodes extend. The orientation of a line connecting holding points matches an axis on which stress sensitivity of the quarts blank exhibits the least value. A line connecting both supporting points for the supporters by the lead wires is disposed in a skew position with respect to another line connecting both holding points for the quartz blank. When the quartz blank is AT cut, an angle formed between these lines in the skew relationship is preferably set to approximately 30 degrees.
    • 响应于温度变化和随时间变化的具有良好频率变化特性的石英晶体单元。 用于垂直于基座设置的一对引线和一对支撑在一对导线上的支撑体用于在引线电极延伸的外围的相对点处保持和电连接石英坯料。 连接保持点的线的取向与夸脱空白的应力敏感度呈现最小值的轴相匹配。 通过引线将用于支撑体的支撑点连接的线相对于连接两个用于石英坯的保持点的另一条线设置在偏斜位置。 当石英坯是AT切割时,以这种偏斜关系形成在这些线之间的角度优选设定为大约30度。
    • 10. 发明授权
    • Acceleration measuring apparatus
    • 加速度测量仪
    • US08919201B2
    • 2014-12-30
    • US13489421
    • 2012-06-05
    • Mitsuaki KoyamaTakeru MutohHiroki IwaiRyoichi Ichikawa
    • Mitsuaki KoyamaTakeru MutohHiroki IwaiRyoichi Ichikawa
    • G01P15/125G01P15/09G01P15/097G01P15/08
    • G01P15/125G01P15/097G01P2015/0817
    • An acceleration measuring apparatus that can easily detect acceleration with high accuracy is provided. In the apparatus, positional displacement of a swingable pendulum member is detected, feedback control is performed to maintain the pendulum member in a stationary state using an actuator, and acceleration is measured by measuring the output of the actuator at this time. A movable electrode is provided to the pendulum member, and a loop is formed in which a fixed electrode provided to oppose the movable electrode, and an oscillating circuit, a crystal unit, and the movable electrode are electrically connected in series. By measuring an oscillating frequency of the oscillating circuit at this time, a change in the size of a variable capacitance formed between the movable electrode and the fixed electrode is detected, and thereby the positional displacement of the pendulum member is detected.
    • 提供了能够以高精度容易地检测加速度的加速度测量装置。 在该装置中,检测出可摆动摆动构件的位置偏移,使用致动器进行反馈控制,使摆锤构件保持在静止状态,此时通过测量致动器的输出来测量加速度。 可动电极设置在摆动部件上,形成有与可动电极相对设置的固定电极以及振荡电路,晶体单元和可动电极串联电连接的环。 此时,通过测量振荡电路的振荡频率,检测出在可动电极和固定电极之间形成的可变电容的尺寸变化,从而检测摆锤构件的位置偏移。