Power supply circuit for a motor
    23.
    发明授权
    Power supply circuit for a motor 失效
    电机电源电路

    公开(公告)号:US5225751A

    公开(公告)日:1993-07-06

    申请号:US793550

    申请日:1991-11-18

    摘要: In a power supply circuit for a motor in which a power source line can be opened and closed by a first opening-closing device, a construction is adopted which has a electrically controllable second opening-closing device connected in parallel to the first opening-closing device, a comparator for comparing the voltage of the motor load side with a predetermined value, a controller for controlling the opening and closing of the second opening-closing device on the basis of a signal from the comparator, and a current limiter device provided in parallel to the second opening-closing device, whereby a rush current when the first opening-closing device is closed can be suppressed to thereby prevent the fluctuation of the source voltage and the deterioration of the contacts of the first opening-closing device.

    摘要翻译: 在其中电源线能够被第一开闭装置打开和关闭的电动机的电源电路中,采用具有与第一开闭并联连接的电可控制的第二开闭装置的结构 装置,用于将电动机负载侧的电压与预定值进行比较的比较器;控制器,用于根据来自比较器的信号控制第二开闭装置的打开和关闭;以及限流装置, 平行于第二开闭装置,由此能够抑制第一开闭装置闭合时的冲击电流,从而防止源电压的波动和第一开闭装置的触点的劣化。

    POWER SUPPLY UNIT IN IMAGE FORMING APPARATUS
    25.
    发明申请
    POWER SUPPLY UNIT IN IMAGE FORMING APPARATUS 有权
    图像形成装置中的电源单元

    公开(公告)号:US20060222398A1

    公开(公告)日:2006-10-05

    申请号:US11275634

    申请日:2006-01-20

    IPC分类号: G03G15/00

    CPC分类号: G03G15/80

    摘要: A power supply unit in an image forming apparatus is provided. The power supply unit includes a piezoelectric transformer, an output voltage detecting circuit which detects the output voltage of the piezoelectric transformer, a comparator which receives an output voltage setting signal, together with an output voltage detecting signal fed back from the output voltage detecting circuit, to compare the output voltage setting signal and the output voltage detecting signal, and a driving frequency supplying circuit which generates the driving frequency of the piezoelectric transformer in accordance with a comparison result by the comparator, and supplies the resultant driving frequency to the piezoelectric transformer. The time constant of the output voltage setting signal is longer than the time constant of the output voltage detecting circuit.

    摘要翻译: 提供了图像形成装置中的电源单元。 电源单元包括压电变压器,检测压电变压器的输出电压的输出电压检测电路,接收输出电压设定信号的比较器以及从输出电压检测电路反馈的输出电压检测信号, 比较输出电压设定信号和输出电压检测信号;以及驱动频率提供电路,其根据比较器的比较结果生成压电变压器的驱动频率,并将得到的驱动频率提供给压电变压器。 输出电压设定信号的时间常数大于输出电压检测电路的时间常数。

    Image forming apparatus
    26.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号:US06856338B2

    公开(公告)日:2005-02-15

    申请号:US10636686

    申请日:2003-08-08

    摘要: This invention has as its object to provide an image forming apparatus in which the number of beam detectors is decreased and which is low in cost and high in the accuracy of the registration position of an image of each color as well as high in quality. To this end, The image forming apparatus is provided with a plurality of image bearing members, an optical system having a plurality of light emitting elements suitable for generating light beams for scanning the image bearing members, a single polygon mirror suitable for deflecting the light beams generated from the plurality of light emitting elements onto the image bearing members, and a beam detector corresponding to at least one of the plurality of image bearing members, and for receiving the light beams scanned by the polygon mirror and producing a first synchronizing signal for recording an image on the relevant image bearing member, a storing portion suitable for storing therein information regarding the error of each side of the polygon mirror, and a producing unit suitable for producing a second synchronizing signal for recording an image on the image bearing member not provided with the beam detector, by delaying the first synchronizing signal outputted from the beam detector, on the basis of the value of the storing portion.

    摘要翻译: 本发明的目的是提供一种图像形成装置,其中光束检测器的数量减少,并且成本低,并且每种颜色的图像的配准位置的精度以及质量高。 为此,图像形成装置设置有多个图像承载部件,具有适于产生用于扫描图像承载部件的光束的多个发光元件的光学系统,适于偏转光束的单个多面镜 从所述多个发光元件产生到所述图像承载部件上的光束检测器和对应于所述多个图像承载部件中的至少一个的光束检测器,并且用于接收由所述多面镜扫描的光束并产生用于记录的第一同步信号 在相关图像承载部件上的图像,适于存储关于多面镜的每一侧的误差的信息的存储部分和适于产生用于在未设置的图像承载部件上记录图像的第二同步信号的产生单元 通过延迟从光束检测器输出的第一同步信号与光束检测器 r基于存储部分的值。

    Semiconductor laser device, and image forming apparatus
    27.
    发明授权
    Semiconductor laser device, and image forming apparatus 失效
    半导体激光装置和图像形成装置

    公开(公告)号:US06633598B1

    公开(公告)日:2003-10-14

    申请号:US09138548

    申请日:1998-08-24

    IPC分类号: H01S500

    摘要: A semiconductor device includes a semiconductor laser chip having a first light-emitting surface which is formed on one end face of the semiconductor laser chip and which outputs a plurality of front beams, and a second light-emitting surface which is formed on an end face opposite to the first light-emitting surface and which outputs a plurality of back beams corresponding to the plurality of front beams. A photodetector is so formed on the semiconductor laser device as to face the second light-emitting surface of the semiconductor laser chip. The photodetector has a plurality of photodetecting portions for independently detecting the plurality of back beams output from the second light-emitting surface. The photodetector is in tight contact with the second light-emitting surface of the semiconductor laser chip.

    摘要翻译: 半导体器件包括:半导体激光器芯片,其具有形成在半导体激光器芯片的一个端面上并且输出多个前部光束的第一发光面;以及形成在端面上的第二发光面 与第一发光面相对,并且输出对应于多个前梁的多个后梁。 在半导体激光装置上形成面对半导体激光芯片的第二发光面的光检测器。 光检测器具有多个用于独立地检测从第二发光面输出的多个后束的光检测部。 光电检测器与半导体激光芯片的第二个发光表面紧密接触

    Image forming apparatus with two-potential-level electricity removing
member
    28.
    发明授权
    Image forming apparatus with two-potential-level electricity removing member 失效
    具有双电位电除电部件的图像形成装置

    公开(公告)号:US5926683A

    公开(公告)日:1999-07-20

    申请号:US618763

    申请日:1996-03-20

    摘要: The present invention relates to an image forming apparatus which comprises an image bearing member for bearing a toner image, a transfer charger for transferring the toner image from the image bearing member to a transfer material, and an electricity removing member for removing electricity from the transfer material to separate the transfer material from the image bearing member, and wherein, when the electricity is removed from the transfer material by the electricity removing member, a potential level applied to the electricity removing member is selected so that the potential level at end portions of the transfer material becomes greater than the potential level at a central portion of the transfer material along a transfer material shifting direction, thereby improving separation of the transfer material from the image bearing member.

    摘要翻译: 本发明涉及一种图像形成装置,其包括用于承载调色剂图像的图像承载部件,用于将调色剂图像从图像承载部件转印到转印材料的转印充电器,以及用于从转印器移除电力的电力去除部件 用于将转印材料从图像承载部件分离的材料,并且其中,当通过除电部件从转印材料去除电时,选择施加到除电部件的电位电平,使得在端部的电位电平 转印材料变得比转印材料移动方向在转印材料的中心部分处的电位高,从而改善了转印材料与图像承载部件的分离。

    Differential driving circuit for a semiconductor laser
    29.
    发明授权
    Differential driving circuit for a semiconductor laser 失效
    半导体激光器的差分驱动电路

    公开(公告)号:US5818503A

    公开(公告)日:1998-10-06

    申请号:US593902

    申请日:1996-01-30

    摘要: An apparatus for generating a laser beam modulated on the basis of an information signal, which comprises a circuit for generating a first information signal, a circuit for generating a second information signal, independent of the first information signal, a circuit for driving a semiconductor laser on the basis of the first and the second information signals, wherein the driving circuit comprises first and second switching elements which operate supplementarily with each other, one of the first and second switching elements switches a drive current to the semiconductor laser, and wherein the first information signal is provided into a control terminal of the first switching element and the second information signal is provided into a control terminal of the second switching element.

    摘要翻译: 一种用于产生基于信息信号调制的激光束的装置,包括用于产生第一信息信号的电路,用于产生与第一信息信号无关的第二信息信号的电路,用于驱动半导体激光器的电路 基于第一信息信号和第二信息信号,其中驱动电路包括彼此补充地操作的第一和第二开关元件,第一和第二开关元件中的一个将驱动电流切换到半导体激光器,并且其中第一 信息信号被提供到第一开关元件的控制端子中,并且第二信息信号被提供到第二开关元件的控制端子中。