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    PRINTING DEVICE CONSUMABLE ITEM END OF LIFE PREDICTION
    3.
    发明公开
    PRINTING DEVICE CONSUMABLE ITEM END OF LIFE PREDICTION 审中-公开

    公开(公告)号：US20240070421A1

    公开(公告)日：2024-02-29

    申请号：US18271214

    申请日：2021-01-15

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

    Inventor： Scott K. Hymas ,  Jeffrey H. Luke ,  Gabriel S. McDaniel

    IPC: G06K15/00

    CPC classification number: G06K15/4075 ,  G06K15/402

    Abstract: The number of days until a consumable item of a printing device reaches end of life is predicted based on a usage scenario of the printing device. An expected fulfillment time period is subtracted from the predicted number of days to determine a number of days until a fulfillment event occurs. A threshold remaining life of the consumable item is correlated with the number of days until the fulfillment event occurs. That the remaining life of the consumable item has reached the threshold remaining life is detected, and fulfillment of a replacement consumable item to replace the consumable item is responsively initiated.

    Magnetic coupling structure for an image forming apparatus
    6.
    发明授权
    Magnetic coupling structure for an image forming apparatus 有权

    公开(公告)号：US11927909B2

    公开(公告)日：2024-03-12

    申请号：US18024492

    申请日：2020-09-28

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

    Inventor： Elizabeth A. Swanson ,  Gabriel S. McDaniel ,  Jeffrey H. Luke

    IPC: G03G21/16 ,  F16D27/02 ,  G03G21/18

    CPC classification number: G03G21/1647 ,  F16D27/02 ,  G03G21/1676 ,  G03G21/186 ,  G03G2221/1657

    Abstract: An image forming apparatus includes a development cartridge having a developing roller. A coupler for the image forming apparatus includes a shaft and a coupling structure to rotate the developing roller. The coupling structure is disposed at an end part of the shaft, is movable along an axial direction of the shaft and coupleable with another coupling structure of a print engine of the image forming apparatus. The coupling structure includes a body, a magnet disposed in the body to cause the coupling structure to be attracted to the another coupling structure so that the coupling structure is aligned with the another coupling structure, and a plurality of protrusions which protrude from the body in the axial direction to engage with the another coupling structure, the plurality of protrusions having at least one side with an inclined face.

    Token permitting print material cartridge usage
    7.
    发明授权
    Token permitting print material cartridge usage 有权

    公开(公告)号：US11927905B2

    公开(公告)日：2024-03-12

    申请号：US17910055

    申请日：2020-05-26

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

    Inventor： Jeffrey H. Luke ,  Gabriel S. McDaniel ,  Scott K Hymas

    IPC: G03G15/08 ,  G03G15/00

    CPC classification number: G03G15/556 ,  G03G15/5079

    Abstract: In response to detecting that a remaining supply of print material of a first cartridge has reached a first threshold, a printing device transmits a request. In response to detecting that a second cartridge has replaced the first cartridge, the printing device determines whether the remaining supply had reached a second threshold and whether a token permitting usage of the second cartridge was received responsive to the request. In response to determining that the remaining supply had reached the second threshold and that the token was received, the printing device prints with print material from the second cartridge.

    TOKEN PERMITTING PRINT MATERIAL CARTRIDGE USAGE
    9.
    发明申请
    TOKEN PERMITTING PRINT MATERIAL CARTRIDGE USAGE 有权

    公开(公告)号：US20230125716A1

    公开(公告)日：2023-04-27

    申请号：US17910055

    申请日：2020-05-26

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

    Inventor： Jeffrey H. Luke ,  Gabriel S. McDaniel ,  Scott K Hymas

    IPC: G03G15/00

    Abstract: In response to detecting that a remaining supply of print material of a first cartridge has reached a first threshold, a printing device transmits a request. In response to detecting that a second cartridge has replaced the first cartridge, the printing device determines whether the remaining supply had reached a second threshold and whether a token permitting usage of the second cartridge was received responsive to the request. In response to determining that the remaining supply had reached the second threshold and that the token was received, the printing device prints with print material from the second cartridge.

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