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    FEATURE PROTECTION FOR THREE-DIMENSIONAL PRINTING
    1.
    发明申请
    FEATURE PROTECTION FOR THREE-DIMENSIONAL PRINTING 审中-公开

    公开(公告)号：WO2019125450A1

    公开(公告)日：2019-06-27

    申请号：PCT/US2017/067740

    申请日：2017-12-20

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

    Inventor： SHEPHERD, Joshua ,  EWALD, Brent ,  SHEPHERD, Matthew A.

    IPC: G06T15/40 ,  G06T15/30 ,  B29C64/393

    Abstract: In some examples, with respect to feature protection for three-dimensional printing, a three-dimensional model of a three-dimensional object to be printed may be ascertained. A determination may be made as to whether a configuration of a three-dimensional model feature of the three-dimensional model matches a removable feature configuration from a set of removable feature configurations. Based on a determination that the configuration of the three-dimensional model feature of the three-dimensional model matches the removable feature configuration from the set of removable feature configurations, the three-dimensional model feature may be removed from the three-dimensional model to generate a modified three-dimensional model.

    INSPECTING MESH MODELS
    2.
    发明申请
    INSPECTING MESH MODELS 审中-公开

    公开(公告)号：WO2019112546A1

    公开(公告)日：2019-06-13

    申请号：PCT/US2017/064447

    申请日：2017-12-04

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

    Inventor： GONZALEZ, Sergio ,  ROCA, Jordi ,  SHEPHERD, Matthew A.

    IPC: G06K9/00 ,  G06T15/00 ,  G06T17/00 ,  B29C64/386 ,  B33Y64/50

    Abstract: In an example, a method includes receiving, at least one processor, a mesh model for an object, a first transformation matrix to apply to the mesh model to describe a first object for generation in additive manufacturing and a second transformation matrix to apply to the mesh model to describe a second object for generation in additive manufacturing. The method may further include determining, by at least one processor, if the first and second transformation matrices describe transformations which are equivalent in terms of mesh errors and, if so, inspecting the mesh model for mesh errors once for both the first and second transformation matrices.

    ADJUSTING THE FIRING TIMES OF A NUMBER OF NOZZLES
    5.
    发明申请
    ADJUSTING THE FIRING TIMES OF A NUMBER OF NOZZLES 审中-公开
    调整一些喷嘴的燃烧时间

    公开(公告)号：WO2015116089A1

    公开(公告)日：2015-08-06

    申请号：PCT/US2014/013776

    申请日：2014-01-30

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

    Inventor： SHEPHERD, Matthew A.

    IPC: B41J2/01 ,  B41J29/38

    CPC classification number: B41J2/04573 ,  B41J2/04545 ,  B41J2/0458 ,  B41J2/04586 ,  B41J2/15 ,  B41J2/2135 ,  B41J29/38

    Abstract: A printer comprising a printhead comprising a number of non-staggered nozzles and a processor communicatively coupled to the printhead, in which the processor executes computer usable program code to adjust the firing time of a number of nozzles within a group of nozzles by a portion of a full dot row. A method comprising, with a processor, adjusting the firing time of a number of nozzles within a group of nozzles of a printhead by a portion of a full dot row by delaying the firing of a subset of those nozzles by a full dot row, in which the nozzles of the printhead are not staggered.

    Abstract translation: 一种打印机，包括打印头，该打印头包括多个不交错的喷嘴以及通信地联接到打印头的处理器，其中处理器执行计算机可用程序代码，以调整一组喷嘴内的多个喷嘴的点火时间， 一个完整的点排。 一种方法，其包括与处理器一起通过全点划线的一部分延迟打印所述喷嘴的一组喷嘴中的多个喷嘴的喷射时间，所述喷嘴的一部分喷嘴通过全点行，以 打印头的喷嘴不会错开。

    OVERLAP PRINTING
    6.
    发明申请
    OVERLAP PRINTING 审中-公开

    公开(公告)号：WO2010087819A1

    公开(公告)日：2010-08-05

    申请号：PCT/US2009/032227

    申请日：2009-01-28

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. ,  SHEPHERD, Matthew A. ,  KINAS, Erick B. ,  MACKENZIE, Mark H.

    Inventor： SHEPHERD, Matthew A. ,  KINAS, Erick B. ,  MACKENZIE, Mark H.

    IPC: B41J2/04 ,  B41J2/15 ,  B41J2/21

    CPC classification number: B41J2/155 ,  B41J2/2132 ,  B41J2/2146

    Abstract: Methods and means for imaging are provided. A sequential application hierarchy of two or more colors is defined. A page-wide print array forms images on a moving media using colored inks. Shingling is performed in accordance with the sequential application hierarchy within the overlap print zones of the page wide print array. Images formed on the media are visually seamless and of proper hue and color saturation throughout as a result of the present teachings.

    Abstract translation: 提供了成像的方法和手段。 定义了两种或多种颜色的顺序应用层次结构。 页面宽的打印阵列使用彩色墨水在移动介质上形成图像。 根据页宽打印阵列的重叠打印区域内的顺序应用层次来执行装订。 作为本教导的结果，在介质上形成的图像在视觉上是无缝的，并且具有适当的色调和色彩饱和度。

    FEATURE LOCATION DETERMINATIONS USING DIGITAL ELLIPSOIDS
    7.
    发明申请
    FEATURE LOCATION DETERMINATIONS USING DIGITAL ELLIPSOIDS 审中-公开

    公开(公告)号：WO2021201849A1

    公开(公告)日：2021-10-07

    申请号：PCT/US2020/026016

    申请日：2020-03-31

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

    Inventor： BAKER, Mary Gray ,  ALLEN, William J. ,  BRIDEN, John J. ,  SHEPHERD, Matthew A.

    IPC: G06T17/00 ,  G06T19/20

    Abstract: According to examples, an apparatus may include a processor that may access a digital model of an item to be fabricated to have a plurality of features, in which the digital model may include a surface. The processor may pack a plurality of digital ellipsoids to intersect the surface of the digital model of the item, in which the plurality of digital ellipsoids are arranged with respect to each other based on a curvature of the surface. The processor may also determine locations on the surface at which the plurality of digital ellipsoids intersect the surface and may set the determined locations as points on the surface at which the plurality of features are to be formed.

    THERMAL SUPPORTS FOR FORMATION OF 3D OBJECT PORTIONS
    8.
    发明申请
    THERMAL SUPPORTS FOR FORMATION OF 3D OBJECT PORTIONS 审中-公开

    公开(公告)号：WO2020027810A1

    公开(公告)日：2020-02-06

    申请号：PCT/US2018/044647

    申请日：2018-07-31

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

    Inventor： BARNES, Arthur H. ,  VERZWYVELT, Vanessa ,  SHEPHERD, Matthew A.

    IPC: B29C64/165 ,  B29C64/393 ,  B33Y10/00 ,  B33Y50/02

    Abstract: According to examples, an apparatus may include a processor and a memory on which is stored machine readable instructions that may cause the processor to identify a color of a portion of a 3D object to be fabricated from a 3D model and to determine, based on the identified color of the portion, a property of a thermal support, in which the property may affect a temperature of an area near build material particles used to form the portion. The instructions may cause the processor to instruct fabrication components to fabricate the thermal support having the determined property and the fabrication components to fabricate the 3D object. The thermal support may be fabricated at a location with respect to the portion to increase a temperature of a set of particles used to fabricate the portion during fabrication of the portion.

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