Method and apparatus for the reduction of phase noise
    71.
    发明授权
    Method and apparatus for the reduction of phase noise 失效
    降低相位噪声的方法和装置

    公开(公告)号:US07071787B2

    公开(公告)日:2006-07-04

    申请号:US10713468

    申请日:2003-11-14

    IPC分类号: H03L7/197

    摘要: A phase locked loop type frequency synthesizer utilizing a reference signal source includes a voltage controlled oscillator (VCO), a phase comparator, a programmable pre-scaler and a modulator. The programmable pre-scaler divides the output of the VCO according to a sequence of divide ratios to produce a divided signal having a frequency approximating the reference signal frequency. The phase comparator compares the phases of the divided signal and the reference signal and, in response to a difference, adapts the VCO to reduce the detected difference. The modulator provides a next value in the sequence of divide ratios by accumulating an error between a present value and an average value in the sequence of divide ratios, accumulating the accumulated error values, and determining the next value in the sequence of divide ratios such that the multiply-accumulated error values are maintained within finite bounds.

    摘要翻译: 利用参考信号源的锁相环型频率合成器包括压控振荡器(VCO),相位比较器,可编程预分频器和调制器。 可编程预分频器根据分频比的顺序对VCO的输出进行分频,以产生具有接近参考信号频率的频率的分频信号。 相位比较器比较分频信号和参考信号的相位,并且响应于差,适配VCO以减小检测到的差。 调制器通过在分频比序列中累积当前值和平均值之间的误差来累积分频比序列中的下一个值,累积误差值,并确定分频比序列中的下一个值,使得 多重累积误差值保持在有限范围内。

    Transfix roller load controlled by force feedback
    72.
    发明授权
    Transfix roller load controlled by force feedback 有权
    通过力反馈控制的转印辊载荷

    公开(公告)号:US08128216B2

    公开(公告)日:2012-03-06

    申请号:US12504432

    申请日:2009-07-16

    IPC分类号: B41J2/01

    CPC分类号: B41J2/0057

    摘要: A printing device has an image receptor adapted to have an image formed thereon. The printing device also includes a transfer roller and a motor. A transfer roller load mechanism moves the transfer roller into contact with the image receptor in response to the motor output. A controller manipulates the motor in conjunction with a feedback signal from a load detector and regulates the load of the transfer roller.

    摘要翻译: 打印装置具有适于具有形成在其上的图像的图像接收器。 印刷装置还包括转印辊和电动机。 转印辊负载机构响应于电动机输出使转印辊与图像接收器接触。 控制器结合来自负载检测器的反馈信号来操作电动机并调节转印辊的负载。

    Transfix roller load controlled by force feedback
    73.
    发明授权
    Transfix roller load controlled by force feedback 有权
    通过力反馈控制的转印辊载荷

    公开(公告)号:US08047648B2

    公开(公告)日:2011-11-01

    申请号:US12504416

    申请日:2009-07-16

    IPC分类号: B41J2/01

    CPC分类号: B41J2/0057

    摘要: A printing device has an image receptor adapted to have an image formed thereon. The printing device also includes a transfer roller and a motor. A transfer roller load mechanism moves the transfer roller into contact with the image receptor in response to the motor output. A controller manipulates the motor in conjunction with a feedback signal from a load detector and regulates the load of the transfer roller.

    摘要翻译: 打印装置具有适于具有形成在其上的图像的图像接收器。 印刷装置还包括转印辊和电动机。 转印辊负载机构响应于电动机输出使转印辊与图像接收器接触。 控制器结合来自负载检测器的反馈信号来操作电动机并调节转印辊的负载。

    Apparatus and method for detecting ink in a reservoir
    74.
    发明授权
    Apparatus and method for detecting ink in a reservoir 有权
    用于检测储存器中墨水的装置和方法

    公开(公告)号:US08024968B2

    公开(公告)日:2011-09-27

    申请号:US12364257

    申请日:2009-02-02

    IPC分类号: G01F23/00

    摘要: A method detects the level of ink in a printhead reservoir by monitoring the power drawn by a thermistor positioned within the printhead reservoir. The method includes dissipating power in a thermistor in an ink reservoir, controlling the power dissipated in the thermistor to maintain the thermistor at a temperature that is a fixed differential above a reservoir temperature, measuring a parameter that corresponds to the power dissipated in the thermistor, and comparing the measured parameter to a predetermined value to detect ink in the reservoir contacting the thermistor.

    摘要翻译: 一种方法是通过监测位于打印头储存器内的热敏电阻拉出的功率来检测打印头储存器中的墨水量。 该方法包括在墨水储存器中散热热敏电阻中的功率,控制热敏电阻中消耗的功率,以将热敏电阻保持在高于储存器温度的固定差分的温度下,测量对应于热敏电阻中消耗的功率的参数, 并将测量参数与预定值进行比较,以检测与热敏电阻接触的储存器中的油墨。

    ELECTRICALLY GROUNDED INKJET EJECTOR AND METHOD FOR MAKING AN ELECTRICALLY GROUNDED INKJET EJECTOR
    75.
    发明申请
    ELECTRICALLY GROUNDED INKJET EJECTOR AND METHOD FOR MAKING AN ELECTRICALLY GROUNDED INKJET EJECTOR 失效
    电接地喷嘴和制造电接地喷嘴的方法

    公开(公告)号:US20110175971A1

    公开(公告)日:2011-07-21

    申请号:US12689320

    申请日:2010-01-19

    IPC分类号: B41J2/045

    摘要: An inkjet ejector provides electrical conductors for grounding electrically isolated layers in the ejector while electrically coupling a transducer of the ejector to a firing signal circuit. The inkjet ejector includes a diaphragm plate have a first side and a second side, a plurality of transducers mounted to the first side of the diaphragm plate, a polymer layer located on the second side of the diaphragm plate, an electrically conductive layer that is isolated from electrical ground by the polymer layer, and a plurality of electrical conductors, at least one of the electrical conductors extends from the electrically conductive layer to electrical ground through the polymer layer and other electrical conductors of the plurality of electrical conductors extend from each transducer to a firing signal circuit, the electrical conductor extending from the electrically conductive layer being the same material as the other electrical conductors in the plurality of electrical conductors.

    摘要翻译: 喷墨喷射器提供用于将喷射器中的电绝缘层接地的电导体,同时将喷射器的换能器电耦合到击发信号电路。 喷墨喷射器包括具有第一侧和第二侧的隔膜板,安装在隔膜板的第一侧上的多个换能器,位于隔膜板的第二侧上的聚合物层,隔离的导电层 通过聚合物层从电接地,以及多个电导体,至少一个电导体从导电层延伸通过聚合物层电接地,并且多个电导体的其它电导体从每个换能器延伸到 触发信号电路,从导电层延伸的电导体与多个电导体中的其它电导体相同的材料。

    Drive Belt Slip and Belt Wear Detection
    79.
    发明申请
    Drive Belt Slip and Belt Wear Detection 有权
    传动皮带和皮带磨损检测

    公开(公告)号:US20100060677A1

    公开(公告)日:2010-03-11

    申请号:US12208442

    申请日:2008-09-11

    IPC分类号: B41J29/38

    摘要: An imaging system for a printer utilizing a friction belt drum drive is comprised of a drum position sensor, drum pulley, drive belt, motor pulley, drive motor, drive motor position sensor, and controller. The velocities of the drum and motor drive pulleys are measured using the controller and position sensors. These velocities along with the drive ratio are used to determine and monitor slip between the belt and pulleys. The magnitude of the slip measured can be used to trigger the controller to respond to the slip event. These responses may include, for example, disabling the motor or reducing motor current or providing a warning indicative of an excessive slip event. Slip measurement combined with other measurements such as motor current can be used to determine the torque capacity of the friction drive. Further, long-term changes in the ratio of pulley velocities can be used to determine drive belt wear.

    摘要翻译: 利用摩擦带鼓驱动的打印机的成像系统包括鼓位置传感器,鼓轮,驱动带,马达皮带轮,驱动马达,驱动马达位置传感器和控制器。 滚筒和马达驱动皮带轮的速度使用控制器和位置传感器进行测量。 这些速度与驱动比一起用于确定和监测皮带和皮带轮之间的滑动。 测量的滑差的大小可用于触发控制器响应滑动事件。 这些响应可以包括例如禁用电动机或减少电动机电流或提供指示过度滑动事件的警告。 滑动测量结合其他测量,如电机电流可用于确定摩擦传动的扭矩容量。 此外,可以使用滑轮速度的比率的长期变化来确定传动带磨损。

    Ink Consumption Determination
    80.
    发明申请
    Ink Consumption Determination 有权
    墨水消耗测定

    公开(公告)号:US20100007691A1

    公开(公告)日:2010-01-14

    申请号:US12564257

    申请日:2009-09-22

    IPC分类号: B41J29/393 B41J2/175

    摘要: An ink jet printer includes an ink feed apparatus. The ink feed apparatus includes an ink feed channel for conducting discrete substantially solid ink sticks along a feed channel path, a plurality of ink sticks in the ink feed channel, each of the ink sticks comprising an ink stick body having an ink stick sensing feature on an external surface of the ink stick body that is located between a first end and a second end of the ink stick body, and each of the ink stick bodies has substantially the same mass as the other ink stick bodies in the plurality, a detector positioned at a fixed position proximate the ink feed channel and configured to be triggered by an ink stick sensing feature on an ink stick in the ink feed channel as the ink stick moves along the ink feed path past the detector, and a counter configured to accumulate the number of times the detector is triggered.

    摘要翻译: 喷墨打印机包括供墨装置。 供墨装置包括用于沿着进料通道路径传送离散的基本上固体的油墨棒的油墨供给通道,在供墨通道中的多个墨水棒,每个墨水棒包括具有墨水棒感测特征的墨水棒体 位于油墨棒体的第一端和第二端之间的墨棒体的外表面,并且每个墨块体具有与多个中的其它墨棒体大致相同的质量,检测器定位 在靠近所述供墨通道的固定位置处,并且被配置为当所述墨水棒沿着所述供墨路径移动通过所述检测器时由所述供墨通道中的墨水棒上的墨水棒感测特征触发,以及配置成累积 触发检测器的次数。