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    Print particle replenishment device
    2.
    发明授权
    Print particle replenishment device 有权

    公开(公告)号：US11571854B2

    公开(公告)日：2023-02-07

    申请号：US17047211

    申请日：2018-08-30

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Ji-Won Moon ,  Min-Chul Lee ,  Woong-Yong Choi ,  Matthew James Storey ,  Jefferson Blake West ,  Zackary Thomas Hickman

    IPC: G03G15/08 ,  B29C64/255 ,  B33Y30/00 ,  B29C64/209 ,  B29C64/241

    Abstract: Examples of a print a print particle replenishment device are described. In some examples, a print particle replenishment device includes a rotating member to rotate about a central axis of the print particle replenishment device. In some examples, the rotating member includes an opening offset from the central axis. In some examples of a print particle replenishment device, a nozzle is offset from the central axis, where the nozzle is to slide with respect to an interior plane of the rotating member to align with the opening to transfer print particles through the nozzle and opening when in an open position. In some examples, a print particle replenishment device includes an extension that protrudes with respect to the opening to engage a port cover of a host device to move the port cover to open a port for replenishment at rotation.

    Toner refill cartridge with structure for preventing toner discharging part from being blocked by weight part
    3.
    发明授权
    Toner refill cartridge with structure for preventing toner discharging part from being blocked by weight part 有权

    公开(公告)号：US11281125B2

    公开(公告)日：2022-03-22

    申请号：US17059592

    申请日：2019-08-09

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Seung-Gweon Lee ,  Woong-Yong Choi ,  Jinhwa Hong ,  Ji-Won Moon

    IPC: G03G15/08 ,  G03G21/18 ,  G03G21/16

    Abstract: An example toner refill cartridge includes a body, a plunger, a weight part, and a weight part container. The body includes a toner chamber to contain toner and a toner discharging portion having an entrance connected to one end of the toner chamber in a length direction and an exit to discharge toner. The plunger includes a piston that is movably inserted into the toner chamber in the length direction and a packing member located at an end of the piston to push the toner toward the toner discharging portion. The weight part is movably accommodated in the toner chamber and has a shape that prevents the weight part from passing through the entrance. The weight part container is provided in the one end of the toner chamber in the length direction such that the weight part can be accommodated therein.

    Toner level determination and notification
    8.
    发明授权
    Toner level determination and notification 有权

    公开(公告)号：US11156939B2

    公开(公告)日：2021-10-26

    申请号：US17256347

    申请日：2018-11-07

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Kenneth K Smith ,  Ji-Won Moon ,  Min-Chul Lee ,  Andrew Chick ,  Matthew Storey ,  Jefferson Blake West ,  Zackary Thomas Hickman ,  Eun-Kyung Yun ,  Yoona Min ,  Pratik Shah

    IPC: G03G15/08 ,  G03G15/00

    Abstract: An image forming apparatus and method for determining a toner level and providing a notification are provided. The method of operating an image forming apparatus includes counting a number of times a lower toner hopper receives toner from an in-situ refillable upper toner hopper, calculating an estimate of toner volume transferred from the lower toner hopper to a surface of a photosensitive drum, determining an amount of toner consumed from the in-situ refillable upper toner hopper based on the number of times the lower toner hopper receives toner from the in-situ refillable upper toner hopper and the estimate of toner volume transferred from the lower toner hopper to the surface of the photosensitive drum, and generating an upper toner hopper refill notification when the amount of toner consumed from the in-situ refillable upper toner hopper is determined to exceed a threshold value.

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