Distortion canceling circuit
    21.
    发明授权
    Distortion canceling circuit 失效
    失真消除电路

    公开(公告)号:US06741128B2

    公开(公告)日:2004-05-25

    申请号:US10131131

    申请日:2002-04-25

    IPC分类号: H03F126

    摘要: There is provided a distortion canceling circuit for reducing an unbalance between a higher and a lower 3rd order distortion at frequencies of (2·f2−f1) and (2·f1−f2), respectively, the distortions being generated by an amplifier which amplifies an input signal having at least two frequency components, i.e., f1 and f2. Phase modulation control means supply a control signal, which has a difference frequency of (f2−f1), to phase modulation means, the control signal being generated based on the amplified input signal outputted from the amplifier. The phase modulation means performs phase modulation on the amplified input signal based on the supplied control signal to thereby generate a higher and a lower side-band signal having frequencies of (2·f2−f1) and (2·f1−f2), respectively, each of which has an identical amplitude and a phase difference of 180° with respect to each other. The distortion canceling circuit reduces the unbalance by using the side-band signals.

    摘要翻译: 提供了一种用于减小在(2.f2-f1)和(2.f1-f2)频率处的较高和较低三阶失真之间的不平衡的失真消除电路,失真是由放大器 具有至少两个频率分量的输入信号,即f1和f2。 相位调制控制装置将具有差分频率(f2-f1)的控制信号提供给相位调制装置,该控制信号是根据从放大器输出的放大输入信号产生的。 相位调制装置基于所提供的控制信号对放大的输入信号执行相位调制,从而分别产生频率为(2.f2-f1)和(2.f1-f2)的较高和较低的边带信号 ,其中的每一个具有相同的振幅和相对于彼此为180°的相位差。 失真消除电路通过使用边带信号来减少不平衡。

    Light irradiation element, image forming structure, and image forming apparatus
    22.
    发明授权
    Light irradiation element, image forming structure, and image forming apparatus 有权
    光照射元件,图像形成结构和图像形成装置

    公开(公告)号:US08712289B2

    公开(公告)日:2014-04-29

    申请号:US13494476

    申请日:2012-06-12

    IPC分类号: G03G21/00 G03G15/04 G03G15/00

    摘要: A light irradiation element includes a cavity through which light passes and a translucent light conduit bordering the cavity, allowing light to pass therethrough and transmitting the light passed through the cavity, the light irradiation element being disposed along a longitudinal direction of an image bearing body on which an electrostatic latent image is formed and directing the light passed through the light conduit to irradiate the image bearing body.

    摘要翻译: 光照射元件包括光通过的空腔和与空腔接合的半透明光导管,允许光通过其中并透过通过空腔的光,光照射元件沿图像承载体的纵向方向设置在 其形成静电潜像并引导通过光导管的光以照射图像承载体。

    Light irradiation element, image forming structure, and image forming apparatus
    23.
    发明授权
    Light irradiation element, image forming structure, and image forming apparatus 有权
    光照射元件,图像形成结构和图像形成装置

    公开(公告)号:US08224207B2

    公开(公告)日:2012-07-17

    申请号:US12135689

    申请日:2008-06-09

    IPC分类号: G03G21/00 G03G15/04

    摘要: A light irradiation element includes a cavity through which light passes and a translucent light conduit bordering the cavity, allowing light to pass therethrough and transmitting the light passed through the cavity, the light irradiation element being disposed along a longitudinal direction of an image bearing body on which an electrostatic latent image is formed and directing the light passed through the light conduit to irradiate the image bearing body.

    摘要翻译: 光照射元件包括光通过的空腔和与空腔接合的半透明光导管,允许光通过其中并透过通过空腔的光,光照射元件沿图像承载体的纵向方向设置在 其形成静电潜像并引导通过光导管的光以照射图像承载体。

    Amplifier
    24.
    发明申请
    Amplifier 审中-公开
    放大器

    公开(公告)号:US20090206927A1

    公开(公告)日:2009-08-20

    申请号:US12385865

    申请日:2009-04-22

    IPC分类号: H03F3/68

    CPC分类号: H03F1/0288

    摘要: There is provided an amplifier for combining outputs of a plurality of amplifying circuits to generate an amplifier output. The amplifier includes a first amplifying circuit for operating a first amplifying device in class-AB, wherein the first amplifying circuit is one among the plurality of the amplifying circuits; a second amplifying circuit for operating a second amplifying device in class-B or class-C, wherein the second amplifying circuit is one among the plurality of the amplifying circuits; and a summing node at which an output of the first amplifying circuit is combined with an output of the second amplifying circuit via a first impedance transformer containing a transmission line of an electrical length other than λ/4. The second amplifying device is connected to the summing node via an output matching circuit and a second impedance transformer containing a transmission line.

    摘要翻译: 提供了用于组合多个放大电路的输出以产生放大器输出的放大器。 放大器包括用于操作AB类中的第一放大装置的第一放大电路,其中第一放大电路是多个放大电路之一; 用于在B类或C类中操作第二放大装置的第二放大电路,其中第二放大电路是多个放大电路之一; 以及求和节点,第一放大电路的输出通过包含除λ/ 4以外的电长度的传输线的第一阻抗变换器与第二放大电路的输出相结合。 第二放大装置经由输出匹配电路和包含传输线的第二阻抗变换器连接到求和节点。

    Distortion compensator
    25.
    发明授权
    Distortion compensator 有权
    失真补偿器

    公开(公告)号:US06856196B2

    公开(公告)日:2005-02-15

    申请号:US10600594

    申请日:2003-06-23

    摘要: A distortion compensator that compensates for distortion arising in a main amplifier 10 that amplifies a signal effectively compensates for third order distortion which is unbalanced between the higher frequency band and lower frequency band. An amplitude detector 3 detects the level of a signal subject to amplification and a signal level change direction detection means 7 detects the direction of change in the level of the signal. A signal level change control means 4-8 stores the correspondence between the signal level and the mode of changing the signal in order to compensate for distortion for when the direction of change in the signal level is positive and when it is negative, and controls a signal change means 9 so that the amplitude and phase of the signal is changed in a mode of changing the signal corresponding to the detected direction of change in the signal level and the detected signal level. A signal change control content updating means 11-13 updates the content of this correspondence so that the distortion contained in the signal after amplification is reduced.

    摘要翻译: 补偿放大信号的主放大器10中出现的失真的失真补偿器有效地补偿在较高频带和较低频带之间不平衡的三阶失真。 振幅检测器3检测经放大的信号的电平,信号电平变化方向检测装置7检测信号电平的变化方向。 信号电平变化控制装置4-8存储信号电平和改变信号的模式之间的对应关系,以便当信号电平的变化方向为正时和当它为负时补偿失真,并且控制一个 信号改变装置9,使得信号的幅度和相位在改变与检测到的信号电平方向和检测信号电平相对应的信号的模式下改变。 信号改变控制内容更新装置11-13更新该对应的内容,使得放大后的信号中包含的失真减少。

    Image forming apparatus with cleaning unit
    26.
    发明授权
    Image forming apparatus with cleaning unit 失效
    具有清洁单元的成像设备

    公开(公告)号:US06816697B2

    公开(公告)日:2004-11-09

    申请号:US10368648

    申请日:2003-02-20

    IPC分类号: G03G1516

    摘要: Disclosed is an image forming apparatus in which an increase in the service life is compatible with a reduction in apparatus size and cost and which provides high productivity in image formation. The image forming apparatus includes: an image bearing member; an image forming unit; an intermediate transfer device; a final transfer member; a potential gradient forming unit; and a cleaning unit; an upstream side cleaning roll, a downstream side cleaning roll which is in contact with the intermediate transfer member on the downstream side of the upstream side cleaning roll with respect to a feedback direction in which the residual toner is fed back from the final transfer position to the primary transfer position, and a cleaning brush which is in contact with the intermediate transfer member on the downstream side of the upstream side cleaning roll and on the upstream side of the downstream side cleaning roll.

    摘要翻译: 公开了一种图像形成装置,其中使用寿命的增加与设备尺寸和成本的降低兼容,并且在图像形成中提供高生产率。 图像形成装置包括:图像承载部件; 图像形成单元; 中间转印装置; 最终转会成员; 电位梯度形成单元; 和清洁单元; 上游侧清洁辊,下游侧清洁辊,其相对于从最终转印位置反馈剩余调色剂的反馈方向与上游侧清洁辊的下游侧的中间转印部件接触, 一次转印位置以及与上游侧清洁辊的下游侧的中间转印体接触的下游侧清洗辊的上游侧的清洗刷。

    Distortion reducing circuit
    27.
    发明授权
    Distortion reducing circuit 失效
    失真减少电路

    公开(公告)号:US06753728B2

    公开(公告)日:2004-06-22

    申请号:US10153630

    申请日:2002-05-24

    IPC分类号: H03F126

    摘要: A distortion reducing circuit compensates an upper side third-order distortion and a lower side third-order distortion produced by an amplifier for amplifying a fundamental signal including multiple frequency components. The distortion reducing circuit includes a second harmonic reflection coefficient regulation circuit, installed at an output side of the amplifier, for regulating reflection coefficients for multiple frequency components included in a second harmonic signal to have a constant value.

    摘要翻译: 失真减小电路补偿由用于放大包括多个频率分量的基本信号的放大器产生的上侧三阶失真和下侧三次失真。 失真减小电路包括安装在放大器的输出侧的二次谐波反射系数调节电路,用于调节包括​​在二次谐波信号中的多个频率分量的反射系数以具有恒定值。

    Scanning exposure unit, semiconductor laser driving circuit and image forming apparatus
    29.
    发明授权
    Scanning exposure unit, semiconductor laser driving circuit and image forming apparatus 有权
    扫描曝光单元,半导体激光驱动电路和图像形成装置

    公开(公告)号:US06388689B1

    公开(公告)日:2002-05-14

    申请号:US09629436

    申请日:2000-07-31

    IPC分类号: B41J2385

    摘要: The formation of a high-quality image at a resolution at which a dot size is smaller than the diameter of a laser beam is attained at a low cost. When an exposure operation is carried out by increasing an optical intensity of a laser beam to a level higher than that of a steady-state optical intensity thereof by utilizing a difference, which is ascribed to an exposure rate of a photosensitive body, in the condition of a latent image formed, the depth and width of a latent image, which were small in all related art cases, can be increased to high levels. Therefore, overshoot is generated at the LD lighting starting time to increase the optical intensity at a rising edge of the laser beam to a level higher than that of a steady-state optical intensity thereof, whereby a height to width ratio and the reproducibility of one dot and a halftone in a case where the resolution is smaller than the diameter of the laser beam can be improved.

    摘要翻译: 以低成本实现了点尺寸小于激光束直径的分辨率的高质量图像的形成。 当通过利用归因于感光体的曝光率的差异将激光束的光强度提高到高于其稳态光学强度的水平来进行曝光操作时,在条件 形成的潜像,在所有现有技术的情况下都很小的潜像的深度和宽度可以提高到高水平。 因此,在LD照明开始时刻产生过冲,从而将激光束的上升边缘处的光强度提高到比其稳态光强度高的水平,由此高比宽度和1的再现性 可以提高分辨率小于激光束直径的情况下的点和半色调。

    Developing device and image forming apparatus using the same
    30.
    发明授权
    Developing device and image forming apparatus using the same 有权
    显影装置和使用其的图像形成装置

    公开(公告)号:US06282385B1

    公开(公告)日:2001-08-28

    申请号:US09631108

    申请日:2000-08-01

    申请人: Masaki Suto

    发明人: Masaki Suto

    IPC分类号: G03G1506

    CPC分类号: G03G15/065

    摘要: A control unit is configured in such a manner that at a transition from a developing state to a non-developing state both of DC and AC components of a development bias that are superimposed on each other are instantaneously interrupted after the duty factor of the portion of the AC component having the opposite polarity to the developer charging polarity is gradually increased.

    摘要翻译: 控制单元被构造成使得在从显影状态到非显影状态的转变中,显影偏压的彼此叠加的显影偏压的DC和AC分量在该部分的占空比之后瞬时中断 具有与显影剂充电极性相反的极性的AC分量逐渐增加。