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    Skewing print medium
    14.
    发明授权
    Skewing print medium 有权

    公开(公告)号：US10682871B2

    公开(公告)日：2020-06-16

    申请号：US15570885

    申请日：2015-07-13

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Luke P. Sosnowski ,  Mark H. MacKenzie

    IPC: B41J29/38 ,  B41J13/26 ,  B41J13/03 ,  B41J29/393 ,  B41J2/07 ,  B41J11/00 ,  B41J13/00 ,  B65H9/00 ,  B65H5/06 ,  B65H7/20

    Abstract: In one example implementation, a printing device may comprise a number of media skewing rollers to skew a print medium to a predetermined angle with respect to a media feed path and a print engine to print an image on the skewed print medium, the print engine skewing a digital representation of the image based on the predetermined angle such that the image printed is aligned with the print medium. In another example implementation, a printing device may comprise a number of skewing rollers to skew a print medium to a predetermined angle with respect to a media path, a number of pinch rollers to receive the skewed print medium prior to printing, and a print engine skewed to the same predetermined angle as the skewed print medium.

    Printing system with force control mode
    15.
    发明授权
    Printing system with force control mode 有权

    公开(公告)号：US09649862B2

    公开(公告)日：2017-05-16

    申请号：US14807098

    申请日：2015-07-23

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Luke P. Sosnowski ,  Pierre J. Kaiser ,  Alexander Toia ,  Arthur H. Barnes ,  Erich Waldherr Hacker

    IPC: B41J13/00

    CPC classification number: B41J13/0009 ,  B41J13/0027

    Abstract: A printing system includes a printhead to eject ink onto a print medium in a print zone. A first roller pair is adjacent to the print zone to advance a print medium into the print zone. A second roller pair upstream from the first roller pair, and driven by an independent motor, advances the print medium to the first roller pair in a position control mode. A controller causes the second roller pair to switch from the position control mode to a force control mode when a leading edge of the print medium reaches the first roller pair. The second roller pair applies a substantially constant force to the print medium in the force control mode to push the leading edge of the print medium against the first roller pair while the first roller pair is stationary.

    MEDIA JAM CLEARING
    16.
    发明申请
    MEDIA JAM CLEARING 有权
    媒体JAM CLEARING

    公开(公告)号：US20150266314A1

    公开(公告)日：2015-09-24

    申请号：US14418773

    申请日：2012-09-27

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

    Inventor： Alexander Toia ,  Luke P. Sosnowski ,  Michael James Rode ,  Richard Scott Smith

    IPC: B41J11/00

    CPC classification number: B41J11/006

    Abstract: A method for media jam clearing includes detecting a media jam with sensor in the printer, in which the media jam comprises a sheet of media stuck in a media path of the printer. The method further includes monitoring for user action that alters the mechanically alters the state of the printer and detecting a user action that mechanically alters the state of the printer. In response to detection of the user action, the printer automatically attempts to clear the media jam.

    Abstract translation: 一种用于介质堵塞清除的方法包括：检测打印机中的传感器中的介质堵塞，其中介质堵塞包括粘贴在打印机的介质路径中的一张介质。 该方法还包括监视用户动作，改变机械地改变打印机的状态并检测机械地改变打印机状态的用户动作。 响应于用户操作的检测，打印机自动尝试清除介质卡纸。

    MOISTURE CONTENT ADJUSTMENTS IN BUILD MATERIAL TRANSPORT PATHS
    18.
    发明申请
    MOISTURE CONTENT ADJUSTMENTS IN BUILD MATERIAL TRANSPORT PATHS 有权

    公开(公告)号：US20210362423A1

    公开(公告)日：2021-11-25

    申请号：US16607755

    申请日：2018-07-31

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Justin M Roman ,  David R. Otis ,  John Geile ,  Luke P. Sosnowski

    IPC: B29C64/364 ,  B29C64/314 ,  B29C64/321 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y50/02

    Abstract: An example of an apparatus is provided. The apparatus includes a build material transport path to transport a build material with air flow. The apparatus includes a humidifying element to receive the air flow and to add moisture to the air flow. The apparatus includes an inlet to introduce ambient air into the build material transport path to decrease moisture content in the air flow. The apparatus includes a valve to connect the humidifying element and the inlet to the build material transport path. The valve is to adjust an amount of ambient air introduced into the build material transport path. The apparatus includes a sensor to detect the moisture content in the air flow and to generate a signal to indicate the moisture content. The apparatus includes a processor to receive the signal to control the valve to maintain a moisture content in the air flow.

    HUMIDIFICATION IN A BUILD MATERIAL RECOVERY SYSTEM
    19.
    发明申请
    HUMIDIFICATION IN A BUILD MATERIAL RECOVERY SYSTEM 有权

    公开(公告)号：US20210362422A1

    公开(公告)日：2021-11-25

    申请号：US16607545

    申请日：2018-04-25

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Justin M. Roman ,  Luke P. Sosnowski

    IPC: B29C64/357 ,  B29C64/314 ,  B33Y40/10 ,  B29C64/255

    Abstract: In one example, a build material recovery system for additive manufacturing includes: a receiving station to receive a portable container containing a build material; a separator to remove build material from a stream of air; a first conduit to carry build material in the stream of air from the receiving station to the separator; a source of negative air pressure to pull the stream of air with the build material through the first conduit from the receiving station to the separator; a humidifier to add moisture to the stream of air; and a second conduit to carry build material from the separator to the receiving station.

    PARTICULATE HEIGHT CALCULATIONS FROM PRESSURE GRADIENTS
    20.
    发明申请
    PARTICULATE HEIGHT CALCULATIONS FROM PRESSURE GRADIENTS 有权

    公开(公告)号：US20210356310A1

    公开(公告)日：2021-11-18

    申请号：US16607491

    申请日：2018-04-30

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Luke P. Sosnowski ,  Tait A. Regnier ,  Philip J. Stallbaumer ,  Terry Lambright ,  Richard King

    IPC: G01F23/16 ,  B29C64/393 ,  B05B12/08

    Abstract: According to examples, an apparatus may include a first pressure sensor to measure a first pressure level at a first height within a particulate material contained in a container and a second pressure sensor to measure a second pressure level at a second height within the container, in which a gas is to be supplied into the particulate material at a predefined velocity, wherein the first pressure sensor is to measure the first pressure level and the second pressure sensor is to measure the second pressure level while the gas is supplied into the particulate material at the predefined velocity. The apparatus may also include a controller that may determine a pressure gradient from the first pressure level and the second pressure level and calculate a height of the particulate material in the container from the determined pressure gradient.

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