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    Print frames creation
    11.
    发明授权
    Print frames creation 有权

    公开(公告)号：US10348929B2

    公开(公告)日：2019-07-09

    申请号：US15569345

    申请日：2015-07-28

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

    Inventor： Jose Galmes ,  Lluis Abello Rosello ,  Joan Vidal Fortia ,  Frank E. Perdicaro

    IPC: H04N1/387 ,  G06F3/12 ,  G06K15/02

    Abstract: An example system includes a controller. The controller is to determine a first end point of a previous frame in a first image. The first image is to be printed on a first ribbon. The controller is to determine a second end point of the previous frame in a second image to be printed on a second ribbon. The controller is to create a current frame containing first image data from the first image starting after the first end point, second image data from the second image starting after the second end point, and third image data from a beginning of the first image. The system includes an image engine to form an image corresponding to the current frame on a medium.

    Recirculating fluid in a printhead
    15.
    发明授权
    Recirculating fluid in a printhead 有权

    公开(公告)号：US10792862B2

    公开(公告)日：2020-10-06

    申请号：US16476247

    申请日：2017-04-21

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

    Inventor： Lluis Abello Rosello ,  Joan Vidal Fortia

    IPC: B41J2/175 ,  B29C64/209 ,  B41J2/045 ,  B41J2/14 ,  B29C64/35

    Abstract: A method of recirculating fluid in a printhead die is provided. The method comprises generating ejection data specifying a nozzle of the printhead from which a drop is to be ejected and storing the ejection data in a first memory. Recirculation data is generated for the nozzle for which a recirculation operation is to be performed, and the recirculation data is stored in a second memory different from the first memory. Fluid is recirculated in the nozzle on the basis of the recirculation data in advance of ejecting a drop from the nozzle on the basis of the ejection data. The recirculation data is generated based on the respective ejection data for the nozzle.

    Printhead control system and inkjet printer system
    16.
    发明授权
    Printhead control system and inkjet printer system 有权

    公开(公告)号：US09975329B2

    公开(公告)日：2018-05-22

    申请号：US15543543

    申请日：2015-04-24

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

    Inventor： Joan Vidal Fortia ,  Lluis Abello Rosello ,  Ron Burns

    IPC: B41J2/045 ,  B41J2/21 ,  B41J2/145

    CPC classification number: B41J2/04535 ,  B41J2/04551 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/145 ,  B41J2/2121 ,  B41J2/2128 ,  B41J2/2142

    Abstract: The present disclosure relates to a printhead control system for a printer, wherein the printer includes at least one printhead comprising a plurality of nozzles for ejecting printing fluid, wherein the nozzles include high drop weight nozzles and low drop weight nozzles ejecting drops of different drop weight, and are each arranged to eject printing fluid on a print medium such as to print images in frame areas of the print medium and such as to clean nozzles in spit bar areas of the print medium; the printer further includes a transport unit for moving the print medium relative to the printhead, wherein the print medium includes frame areas for printing images and spit bar areas for cleaning the nozzles; the printhead control device including: a module to determine a first group of said nozzles located over a frame area of the print medium and a second group of said nozzles located over a spit bar area of the print medium; a module to operate the high drop weight nozzles of the first group such as to eject printing fluid and print an image in the frame area; a module to operate disable the low drop weight nozzles of the first group such as to not eject printing fluid in the frame area; and a module to operate the high drop weight nozzles and the low drop weight nozzles of the second group such as to alternately eject printing fluid in the spit bar area.

    SEGMENTING OBJECT MODEL DATA AT FIRST AND SECOND RESOLUTIONS
    20.
    发明申请
    SEGMENTING OBJECT MODEL DATA AT FIRST AND SECOND RESOLUTIONS 有权

    公开(公告)号：US20210331403A1

    公开(公告)日：2021-10-28

    申请号：US16605585

    申请日：2018-04-27

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

    Inventor： David Ramirez Muela ,  Manuel Freire Garcia ,  Lluis Abello Rosello ,  Sergio Puigardeu Aramendia

    IPC: B29C64/393 ,  B29C64/118 ,  G06T7/10 ,  G06F30/10 ,  B33Y10/00 ,  B33Y50/02

    Abstract: An example method includes acquiring a model of an object to be generated in three-dimensional object generation which is segmented into a plurality of object model sub-volumes, each sub-volume representing a region of the object which is individually addressable in object generation. Object model sub-volumes within a first depth of an object model surface are defined at a first resolution and object model sub-volumes beyond the first depth are defined at a second resolution, and the first resolution is a higher resolution than the second resolution. An object generation model is applied to the object model to determine at least one predicted dimensional deviation of the object in object generation. A geometric adjustment to the segmented object model may be determined to compensate for the predicted dimensional deviation by adding and/or removing at least one object model sub-volume defined at the first resolution.

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