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    • 62. 发明授权
    • Power source apparatus of image forming apparatus
    • 图像形成装置的电源装置
    • US5621630A
    • 1997-04-15
    • US231488
    • 1994-04-22
    • Koji SuzukiHajime MotoyamaHiroshi Saito
    • Koji SuzukiHajime MotoyamaHiroshi Saito
    • G03G15/16H02M3/28H02M7/02
    • G03G15/1675H02M3/28
    • A power source apparatus suitable for a high voltage power source of an electrophotographic type copying apparatus or a printer comprises: a first DC power source which can vary an output; a second DC power source which can vary an output and whose output terminal of the same polarity as that of one output terminal of the first DC power source is connected to such one output terminal; connecting means for connecting another output terminal of the first DC power source and another output terminal of the second DC power source to a load; control means for making operative and controlling the first and second DC power sources in accordance with an output of the power source apparatus; and detecting means for detecting an output voltage or an output current of the power source apparatus.
    • 适用于电子照相型复印机或打印机的高压电源的电源装置包括:可改变输出的第一直流电源; 第二直流电源,其可以改变输出,并且其与第一直流电源的一个输出端子的输出端子的相同极性的输出端子连接到这样的一个输出端子; 连接装置,用于将第一直流电源的另一输出端和第二直流电源的另一输出端连接到负载; 控制装置,用于根据电源设备的输出来操作和控制第一和第二DC电源; 以及检测装置,用于检测电源设备的输出电压或输出电流。
    • 63. 发明授权
    • Video signal reproducing method and apparatus
    • 视频信号再现方法和装置
    • US5563716A
    • 1996-10-08
    • US377242
    • 1995-01-24
    • Kenji ShibayamaKoji Suzuki
    • Kenji ShibayamaKoji Suzuki
    • H04N5/7826H04N5/783H04N9/797H04N9/81H04N9/877H04N5/91G11B5/02H04N5/78
    • H04N9/877H04N9/7973H04N9/81H04N5/78266H04N5/783
    • A first reproduction signal is reproduced by use of a first pair of magnetic heads having first and second azimuth angles and arranged around a rotary drum at two opposing angular positions 180 degrees away from each other, respectively. A second reproduction signal is reproduced by use of a second pair of magnetic heads having first and second azimuth angles and arranged around the rotary drum at two opposing angular positions 180 degrees away from each other, respectively. A video signal is reproduced based on the first and second reproduction signals. The magnetic tape travel speed is set to a value (2n+1.+-.m/M) times higher than that in recording, where n is an integer of 0 or more; m and M are a natural number, respectively; T.gtoreq.12/(P+Q) (T: an integer) when m/M=2k/T; and P>0, Q>0.
    • 第一再现信号通过使用具有第一和第二方位角的第一对磁头被再现,并且分别围绕旋转磁鼓布置在彼此相距180度的两个相对的角度位置。 第二再现信号通过使用具有第一和第二方位角的第二对磁头再现,并且分别围绕旋转磁鼓设置在彼此相距180度的两个相对的角度位置。 基于第一和第二再现信号再现视频信号。 磁带移动速度被设定为高于记录时的值(2n + 1 +/- m / M)倍,其中n是0以上的整数; m和M分别是自然数; 当m / M = 2k / T时,T> / = 12 /(P + Q)(T:整数) P> 0,Q> 0。
    • 65. 发明授权
    • Image formation apparatus including a plurality of development unit
selectively driven by a common power source
    • 图像形成装置包括由公共电源选择性地驱动的多个显影单元
    • US5376998A
    • 1994-12-27
    • US964095
    • 1992-10-21
    • Koji Suzuki
    • Koji Suzuki
    • G03G15/01
    • G03G15/0121
    • An image formation apparatus such as a color copier or color printer comprises a plurality of development units, a development bias power source to supply power sources to the development units, a switch for allowing the output power of the development bias power source to be supplied to the development unit selected in accordance with a sequence control signal for image formation generated from a sequence controller, and a power supply control circuit to selectively to supply the output power of the development bias power source to the development unit which is developing only for a development period of time of each development unit. The development units are fixedly arranged near the photosensitive drum on which an electrostatic latent image is formed. The development bias power source includes both an AC component and a DC component. Since the amplitude, frequency, DC potential, and the like of the development bias power source are switched for each development unit selected, it is sufficient to use only one expensive power source. In this manner, image deterioration by the mechanical vibration due to the movement of the development unit can be eliminated.
    • 诸如彩色复印机或彩色打印机的图像形成装置包括多个显影单元,用于向显影单元供应电源的显影偏压电源,用于允许将显影偏压电源的输出功率供应到 根据从序列控制器产生的用于图像形成的序列控制信号而选择的显影单元和选择性地将显影偏压电源的输出功率提供给正在开发仅用于显影的显影单元的电源控制电路 每个开发单位的时间段。 显影单元固定地布置在其上形成有静电潜像的感光鼓附近。 显影偏压电源包括AC分量和DC分量。 由于对于所选择的每个显影单元切换显影偏压电源的振幅,频率,DC电位等,所以仅使用一个昂贵的电源就足够了。 以这种方式,可以消除由于显影单元的移动引起的机械振动的图像劣化。
    • 68. 发明授权
    • PWM power supply with synchronous rectifier and synchronizing oscillator
    • PWM电源带同步整流器和同步振荡器
    • US5173847A
    • 1992-12-22
    • US414274
    • 1989-09-29
    • Koji Suzuki
    • Koji Suzuki
    • H02M3/335H02M7/48
    • H02M7/4807H02M3/33592Y02B70/1475
    • There is disclosed a power supply device having a transformer including primary and secondary windings, for generating in said secondary winding a high voltage output corresponding to power supplied to said primary winding, a first switch for on-off switching power supplied to the primary winding of said transformer, a first signal generator for supplying a switching signal at a first frequency to said first switch, a rectifier for rectifying the high voltage output generated in the secondary winding of said transformer, and controller including a second signal generator for supplying a modulating signal at a second frequency lower than said first frequency, for modulating the output of said rectifier by means of controlling the power supplied to the primary winding of said transformer in accordance with said modulating signal.
    • 公开了一种电源装置,其具有包括初级和次级绕组的变压器,用于在所述次级绕组中产生对应于提供给所述初级绕组的功率的高电压输出,用于提供给初级绕组的开关电源的第一开关 所述变压器是用于向所述第一开关提供第一频率的开关信号的第一信号发生器,用于对所述变压器的次级绕组中产生的高电压输出进行整流的整流器,以及包括用于提供调制信号的第二信号发生器的控制器 在低于所述第一频率的第二频率下,通过根据所述调制信号控制提供给所述变压器的初级绕组的功率来调制所述整流器的输出。