Gear train backlash removal during component acceleration in an image forming device
    21.
    发明授权
    Gear train backlash removal during component acceleration in an image forming device 有权
    在图像形成装置中的分量加速期间齿轮传动齿隙去除

    公开(公告)号:US07522863B2

    公开(公告)日:2009-04-21

    申请号:US11393640

    申请日:2006-03-30

    IPC分类号: G03G15/00

    摘要: In an image forming device where first and second components are disposed in rotating contact with one another, the first component is driven by a first motor and a second component is driven by a second motor through a gear train with some predetermined backlash. The first and second components can be controllably accelerated according to respective first and second velocity profiles. The second component may be accelerated at a rate faster than the first component by an amount sufficient to substantially eliminate backlash in the gear train by a time the first and second components reach a common process speed. The first and second profiles may be adapted such that the mathematical integral of the time area between curves defining the profiles substantially matches the backlash amount.

    摘要翻译: 在其中第一和第二部件彼此旋转接触地设置的图像形成装置中,第一部件由第一电动机驱动,第二部件由第二电动机通过具有预定的间隙的齿轮系驱动。 可以根据相应的第一和第二速度曲线可控地加速第一和第二部件。 第二部件可以以比第一部件快的速率加速足以在第一和第二部件达到公共处理速度的时间基本上消除齿轮系中的齿隙的量。 可以对第一和第二轮廓进行调整,使得限定轮廓的曲线之间的时间区域的数学积分基本上与齿隙量相匹配。

    Shared high voltage power supply for image transfer in an image forming device
    23.
    发明授权
    Shared high voltage power supply for image transfer in an image forming device 有权
    在图像形成装置中用于图像转印的共享高压电源

    公开(公告)号:US07289757B2

    公开(公告)日:2007-10-30

    申请号:US10810730

    申请日:2004-03-26

    IPC分类号: G03G15/01 G03G15/16 G03G15/00

    CPC分类号: G03G15/80

    摘要: An image transfer assembly in a color printer or the like includes four image forming units. Each of the image forming units includes a photoconductive unit and a transfer device. A voltage is applied to the transfer device thereby creating a voltage potential between the photoconductive unit and the transfer device to facilitate the transfer of toner to a media substrate, such as paper. The transfer devices in the first two image forming units share a single high voltage power supply while separate high voltage power supplies supply the necessary voltage to the transfer devices of the other two image forming units.

    摘要翻译: 彩色打印机等中的图像传送组件包括四个图像形成单元。 每个图像形成单元包括光电导单元和转印装置。 电压被施加到转移装置,从而在光电导单元和转印装置之间产生电压电位,以便调色剂转移到诸如纸张之类的介质基板上。 前两个图像形成单元中的传送装置共享单个高压电源,而单独的高压电源为其它两个图像形成单元的传送装置提供必要的电压。

    Electrophotographic apparatus and method for inhibiting charge
over-transfer
    25.
    发明授权
    Electrophotographic apparatus and method for inhibiting charge over-transfer 失效
    用于抑制电荷转移的电子照相设备和方法

    公开(公告)号:US5697015A

    公开(公告)日:1997-12-09

    申请号:US655011

    申请日:1996-05-29

    IPC分类号: G03G15/16

    摘要: Method and apparatus are provided for inhibiting toner transfer defects, and in particular, to inhibit over-transfer of electrical charge through a transfer medium to a toner after development of a latent image on a photoconductor in an electrophotographic imaging device. Toner transfer defects are inhibited near the leading edge of a print medium by a method which includes the step of providing a controlled ramped voltage output to a transfer member so as to provide a controlled flow of charge from the transfer member to the transfer medium during an initial application of electrical charge to a first region of the transfer medium adjacent a leading edge of the transfer medium. To inhibit intra-page toner transfer defects, the method of the invention includes the step of selectively activating a light source when the transfer medium is present in the nip region so as to partially discharge a portion of the photoconductor not containing a developed image when a servo voltage is below a servo threshold voltage during an image transfer.

    摘要翻译: 提供了用于抑制调色剂转移缺陷的方法和装置,特别是在电子照相成像装置中的感光体上显影潜像之后,抑制电荷通过转印介质过度转印到调色剂上。 调色剂转印缺陷在打印介质的前边缘附近被抑制,该方法包括以下步骤:向转印部件提供受控的斜坡电压输出,以便在转印元件期间将转印元件的受控流量从转印元件提供给转印介质 将初始电荷施加到与转印介质的前缘相邻的转印介质的第一区域。 为了抑制页内调色剂转印缺陷,本发明的方法包括当转印介质存在于辊隙区域中时有选择地激活光源的步骤,以便在不存在显影图像的部分放电的情况下 伺服电压在图像传输期间低于伺服阈值电压。

    Development component detection in an electrophotographic device
    28.
    发明授权
    Development component detection in an electrophotographic device 有权
    电子照相设备中的显影成分检测

    公开(公告)号:US07272328B2

    公开(公告)日:2007-09-18

    申请号:US11093143

    申请日:2005-03-29

    IPC分类号: G03G15/00

    摘要: An image forming device and method of detecting the presence or absence of components of one or more image forming units. Each image forming unit includes a replaceable component. A power supply transmits an input signal to the replaceable component. A detection circuit is coupled to the replaceable component and generates an output signal indicative of the presence or absence of an electrical coupling that is established when the replaceable component is installed. The detection circuit thus senses the input signal propagating through the replaceable component. A controller may be adapted to halt image formation or generate an error indication if the detection circuit detects the absence of necessary components or the presence of components not necessary for a current mode of operation.

    摘要翻译: 一种检测一个或多个图像形成单元的部件的存在或不存在的图像形成装置和方法。 每个图像形成单元包括可更换部件。 电源将输入信号发送到可更换部件。 检测电路耦合到可更换部件,并产生指示当可更换部件安装时建立的电耦合的存在或不存在的输出信号。 因此,检测电路感测通过可更换部件传播的输入信号。 如果检测电路检测到不需要的组件或不存在当前操作模式所需的组件,则控制器可以适于停止图像形成或产生错误指示。

    Method of determining a relative speed between independently driven members in an image forming apparatus
    29.
    发明授权
    Method of determining a relative speed between independently driven members in an image forming apparatus 有权
    确定图像形成装置中独立驱动构件之间的相对速度的方法

    公开(公告)号:US07149449B2

    公开(公告)日:2006-12-12

    申请号:US10844784

    申请日:2004-05-13

    IPC分类号: G03G15/20

    CPC分类号: G03G15/657 G03G2215/00139

    摘要: A method of determining a relative speed between two separately driven members in an image forming apparatus, includes the steps of: transporting a print medium using a print media transport assembly including a first nip, the print media transport assembly operable at a first transport speed; driving a rotatable member associated with a second nip at a second transport speed which is independent from the first transport speed; printing a first image on the print medium when the print medium is in at least one of the first nip and the second nip; printing a second image on the print medium when the print medium is in each of the first nip and the second nip, the second image overlapping the first image; detecting a moiré pattern caused by the first image and the second image; and determining a speed relationship between the first transport speed and the second transport speed, dependent upon the detected moiré pattern.

    摘要翻译: 一种确定图像形成装置中两个分别被驱动的构件之间的相对速度的方法包括以下步骤:使用包括第一压区的打印介质传送组件传送打印介质,所述打印介质传送组件可以以第一传送速度操作; 以与第一输送速度无关的第二输送速度驱动与第二压区相关联的可旋转构件; 当所述打印介质处于所述第一辊隙和所述第二辊隙中的至少一个中时,在所述打印介质上打印第一图像; 当所述打印介质处于所述第一辊隙和所述第二辊隙中的每一个时,在所述打印介质上打印第二图像,所述第二图像与所述第一图像重叠; 检测由第一图像和第二图像引起的莫尔图案; 以及根据检测到的莫尔图案,确定第一输送速度和第二输送速度之间的速度关系。

    Method of determining a relative speed between independently driven members in an image forming apparatus
    30.
    发明授权
    Method of determining a relative speed between independently driven members in an image forming apparatus 有权
    确定图像形成装置中独立驱动构件之间的相对速度的方法

    公开(公告)号:US07050734B2

    公开(公告)日:2006-05-23

    申请号:US10809095

    申请日:2004-03-25

    IPC分类号: G03G15/00 G03G15/20

    摘要: A method of determining a relative speed between two separately driven members in an image forming apparatus, includes the steps of: transporting a print medium using a print media transport assembly including an exit nip, the print media transport assembly operable at a first transport speed; driving a rotatable member associated with an entrance nip using an electric motor at a second transport speed which is independent from the first transport speed; transferring the print medium from the exit nip to the entrance nip; detecting an electrical characteristic of the motor when the print medium is present in each of the exit nip and the entrance nip; and determining a relative speed between the first transport speed and the second transport speed.

    摘要翻译: 一种确定图像形成装置中的两个独立驱动部件之间的相对速度的方法包括以下步骤:使用包括出口压区的打印介质传送组件传送打印介质,所述打印介质传送组件可以以第一传送速度操作; 以独立于第一输送速度的第二输送速度使用电动机驱动与进口压区相关的可旋转构件; 将打印介质从出口压区转移到入口压区; 当打印介质存在于每个出口夹持部和入口夹持部中时,检测马达的电特性; 以及确定所述第一输送速度和所述第二输送速度之间的相对速度。