利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.011 秒)

    Trim bar entry geometry for a dual component development electrophotographic image forming device
    3.
    发明授权
    Trim bar entry geometry for a dual component development electrophotographic image forming device 有权
    用于双组分显影电子照相图像形成装置的修剪条条形几何形状

    公开(公告)号：US09280094B1

    公开(公告)日：2016-03-08

    申请号：US14618172

    申请日：2015-02-10

    申请人： Lexmark International, Inc.

    发明人： Michael Brian Bacelieri ,  Robert Dan Bennett, III ,  Gary Allen Denton ,  Katherine Marie Gilliam ,  Elliott Vincent Jernigan ,  Matthew Lee Rogers ,  Dominique Renee Rowe ,  Courtney Harrison Soale

    IPC分类号： G03G15/09 ,  G03G15/08

    CPC分类号： G03G15/0928 ,  G03G15/0812 ,  G03G15/0891

    摘要： A developer unit for a dual component development electrophotographic image forming device according to one example embodiment includes a housing having a reservoir for storing a developer mix that includes toner and magnetic carrier beads. An auger is positioned to convey developer mix in the reservoir toward the outer surface of a magnetic roll on a front of the housing. A ledge on an inner surface of the housing extends axially with respect to the magnetic roll along a front of the reservoir. The ledge is positioned upstream from a trim bar and downstream from a pickup pole of the magnetic roll with respect to the operative rotational direction of the magnetic roll. The ledge has a concave curved inner surface that is open to the reservoir and extends from near the trim bar to near a front side of the auger.

    摘要翻译： 根据一个示例性实施例的用于双组分显影电子照相图像形成装置的显影剂单元包括具有用于存储包括调色剂和磁性载体珠的显影剂混合物的储存器的壳体。 螺旋钻定位成将储存器中的显影剂混合物传送到壳体前部的磁性辊的外表面。 壳体内表面上的凸缘沿储存器的前部相对于磁辊轴向延伸。 凸缘相对于磁辊的操作旋转方向位于微调杆的上游并且位于磁辊的拾取极的下游。 该凸缘具有凹形弯曲的内表面，该内表面对储存器开放并且从修剪条附近延伸到靠近螺旋钻的前侧。

    Compensation for deficient charge roll in an imaging device
    4.
    发明授权
    Compensation for deficient charge roll in an imaging device 有权

    公开(公告)号：US10579003B1

    公开(公告)日：2020-03-03

    申请号：US16418113

    申请日：2019-05-21

    申请人： LEXMARK INTERNATIONAL, INC.

    发明人： Michael Brian Bacelieri ,  Douglas Anthony Able ,  Andrew Pryse Dale ,  Jared Kuohui Lin ,  Robert Watson McAlpine ,  Matthew Russell Smither

    IPC分类号： G03G15/06 ,  G03G15/00

    摘要： An imaging device includes a photoconductive drum charged by a charge roll and opposed by a transfer roll to transfer an image from the drum. The drum becomes biased to a negative voltage by setting charges of negative voltage on both the charge roll and transfer roll. A controller switches the bias of the transfer roll to a positive voltage from the negative voltage and a delta or difference in a charge of the drum is determined from before and after the switching. Based on the delta, the voltage on the charge roll is boosted by a boost voltage to improve the charge on the drum. In this way, deteriorating or defective charge rolls can be still used to charge the drum to a proper voltage for imaging. Techniques for determining the delta, the boost and the magnitude of voltage charges are further embodiments.

    Lubricant metering for photoconductor in imaging device
    6.
    发明授权
    Lubricant metering for photoconductor in imaging device 有权

    公开(公告)号：US10120324B2

    公开(公告)日：2018-11-06

    申请号：US15371411

    申请日：2016-12-07

    申请人： LEXMARK INTERNATIONAL, INC.

    发明人： Michael Brian Bacelieri ,  Marc Cousoulis

    IPC分类号： G03G21/00

    摘要： An imaging device has a photoconductive drum with a surface that is selectively discharged to create a latent electrostatic image for attracting toner for transfer to a media moving in a process direction. The image is divided into multiple segments along the process direction and discharged pixels per segment are counted. An accumulator keeps track of the numbers of pixels per revolutions of a roller that applies the toner to the drum. Upon meeting a predetermined deficiency in the counts of pixels in any given segment, an artificial image gets generated on the surface of the photoconductive drum that supplies the missing pixels, per segment. The image gets developed with toner, but does not transfer to the media. Lubrication occurs on the surface of the drum and each segment retains a relatively common number of imaging pixels that get developed over time.