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    • 2. 发明授权
    • Image heating apparatus
    • 图像加热装置
    • US5819150A
    • 1998-10-06
    • US883080
    • 1997-06-26
    • Minoru HayasakiHiroshi ManoAtsuyoshi AbeKiyofumi Nakane
    • Minoru HayasakiHiroshi ManoAtsuyoshi AbeKiyofumi Nakane
    • G03G15/20
    • G03G15/2053
    • An image heating apparatus is constructed by a heat generating member having a conductive layer and a magnetic field generating apparatus for generating a magnetic field. The magnetic field generating apparatus has an exciting coil and an electric power is supplied from a power source to the exciting coil by a switching circuit. An eddy current is generated in the heating member by the magnetic field generated by the magnetic field generating apparatus, the heat generating member generates a heat by the eddy current, and an image on a recording material is heated by the heat. The exciting coil has a first coil portion and a second coil portion for matching the impedances of the first coil portion and the heat generating member. The first coil portion and the second coil portion are neighboring. The magnetic coupling between the second coil portion and the heat generating member is weaker than that between the first coil portion and the heat generating member. The second coil portion is away from the heat generating member than the first coil portion. The first coil portion and the second coil portion are serially connected. The number of turns of the second coil portion is smaller than that of the first coil portion.
    • 图像加热装置由具有导电层的发热件和用于产生磁场的磁场产生装置构成。 磁场产生装置具有励磁线圈,并且通过开关电路从电源向励磁线圈供电。 通过由磁场产生装置产生的磁场在加热构件中产生涡流,发热体通过涡流产生热量,并且通过热量加热记录材料上的图像。 励磁线圈具有用于匹配第一线圈部分和发热元件的阻抗的第一线圈部分和第二线圈部分。 第一线圈部分和第二线圈部分相邻。 第二线圈部分和发热部件之间的磁耦合比第一线圈部分和发热部件之间的磁耦合弱。 第二线圈部分比第一线圈部分远离发热部件。 第一线圈部分和第二线圈部分串联连接。 第二线圈部分的匝数小于第一线圈部分的匝数。
    • 4. 发明授权
    • Power supply device and fixing device operating with the power supply device
    • 电源装置和固定装置与电源装置一起工作
    • US06346800B1
    • 2002-02-12
    • US09511779
    • 2000-02-23
    • Hiroshi ManoMinoru Hayasaki
    • Hiroshi ManoMinoru Hayasaki
    • G05F146
    • G03G15/20H02M3/158H02M2001/0009H05B6/04H05B6/145
    • A power supply device and a voltage resonance method are provided, which are free from a reduced switching loss, as well as from the situation in which soft switching operations for generating an alternating magnetic field cannot be executed. A first charging device is connected in series with a first switching device, a second switching device is connected in series with the first charging device, and a magnetic field generating device is connected between a power supply line and a node between the first charging device and the second switching device. A second charging device is connected in parallel with the second switching device, a first rectifying device is connected in parallel with the first switching device, and a second rectifying device connected in parallel with the second switching device. A switching control circuit controls driving of the first and second switching devices, such that it alternately turns on the first switching device and the second switching device, more specifically, turns off the first switching device before turning on the second switching device.
    • 提供了一种没有降低的开关损耗的电源装置和电压共振方法,以及不能执行用于产生交变磁场的软开关操作的情况。 第一充电装置与第一开关装置串联连接,第二开关装置与第一充电装置串联连接,并且磁场产生装置连接在电源线和第一充电装置与第一充电装置之间的节点之间 第二开关装置。 第二充电装置与第二开关装置并联连接,第一整流装置与第一开关装置并联连接,第二整流装置与第二开关装置并联连接。 切换控制电路控制第一和第二开关装置的驱动,使得交替地接通第一开关装置和第二开关装置,更具体地说,在接通第二开关装置之前关闭第一开关装置。
    • 6. 发明授权
    • Power supply device for image forming apparatus, and image forming apparatus using the same
    • 用于图像形成装置的电源装置,以及使用该装置的图像形成装置
    • US06373232B1
    • 2002-04-16
    • US09705727
    • 2000-11-06
    • Hiroshi ManoMinoru Hayasaki
    • Hiroshi ManoMinoru Hayasaki
    • G05F140
    • G05F1/40G03G15/2003G03G15/80H03K17/0406
    • This invention provides a power supply device which widens a narrow output control width which is a drawback of a conventional voltage resonant power supply, and in adopting as a switching control element a low-cost IGBT (Insulated Gate Bipolar Transistor) which permits a large current, optimizes a gate signal waveform to minimize a switching loss in control because the IGBT has a larger loss than an FET. A voltage resonant converter includes a switching IGBT (201) connected to a power supply, a first resonant capacitor (204) series-connected to the IGBT (201), an IGBT (202) series-connected to the first resonant capacitor (204), an exciting coil (18) connected between the power supply and a node between the first resonant capacitor (204) and the IGBT (202), a second resonant capacitor (205) parallel-connected to the IGBT (202), and regenerative diodes (206, 207) respectively parallel-connected to the IGBTs (201, 202). A gate control signal to the IGBTs (201, 202) allows generating a switching timing signal by waveform shaping from a transmission voltage (3) of an insulated driving transformer to ensure reliable switching operation.
    • 本发明提供一种电源装置,该电源装置能够扩大作为常规电压谐振电源的缺点的窄输出控制宽度,并且采用允许大电流的低成本IGBT(绝缘栅双极型晶体管)作为开关控制元件 优化栅极信号波形以最小化控制中的开关损耗,因为IGBT具有比FET更大的损耗。 电压谐振变换器包括与电源连接的开关IGBT(201),与IGBT(201)串联连接的第一谐振电容器(204),与第一谐振电容器(204)串联连接的IGBT(202) 连接在电源与第一谐振电容器(204)和IGBT(202)之间的节点之间的励磁线圈(18),与IGBT(202)并联连接的第二谐振电容器(205)和再生二极管 (206,207),分别并联连接到所述IGBT(201,202)。 对IGBT(201,202)的栅极控制信号允许通过从绝缘驱动变压器的发送电压(3)的波形整形产生开关定时信号,以确保可靠的开关操作。
    • 7. 发明授权
    • Heating device, image forming apparatus, and electric-power control method
    • 加热装置,成像装置和电力控制方法
    • US06359269B1
    • 2002-03-19
    • US09626384
    • 2000-07-26
    • Minoru HayasakiHiroshi Mano
    • Minoru HayasakiHiroshi Mano
    • H05B608
    • H05B6/145G03G15/2003
    • A heating device for heating a material to be heated according to a magnetic-induction heating method includes a magnetic-field generator for generating a magnetic field, an electromagnetic-induction heating member for performing electromagnetic-induction heating by the magnetic field generated by the magnetic-field generator, a current detector for detecting a current flowing in the magnetic-field generator, a controller for controlling electric power supplied to the magnetic-field generator based on a result of detection of the current detector, and a current limiter for limiting a maximum current flowing in the magnetic-field generator based on the result of detection of the current detector.
    • 根据磁感应加热方法加热待加热材料的加热装置包括用于产生磁场的磁场发生器,用于通过磁场产生的磁场进行电磁感应加热的电磁感应加热部件 场发生器,用于检测在磁场发生器中流动的电流的电流检测器,用于基于电流检测器的检测结果控制供给到磁场发生器的电力的控制器,以及用于限制 基于电流检测器的检测结果,在磁场发生器中流动的最大电流。