公开(公告)号：US20210394447A1

公开(公告)日：2021-12-23

申请号：US15734594

申请日：2019-03-15

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

Inventor： Pol FORNOS MARTINEZ ,  Maria de las Mercedes BLANCO ROLLAN ,  Ismael FERNANDEZ AYMERICH ,  Adam FRANKS

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

Abstract: In one example a method of generating a three-dimensional object in a 3D printing system using a fusing agent of a first colour and a build material having a second colour different from the first colour, and a detailing agent, comprises obtaining object model data describing an object to be generated, and determining a first portion of the object to be generated to have the second colour. The method comprises determining object generation instructions to generate the object by defining a gap region of a layer of build material that is to correspond to the first portion of the object to have the second colour on which no agents are to be applied, a band of detailing agent on a layer of build material immediately adjacent to the gap region to define an outer limit of the gap region and therefore a boundary of the first portion of the object, and a fusing agent region on a layer of build material adjacent to the gap region on which fusing agent is to be applied.

公开(公告)号：US20210354373A1

公开(公告)日：2021-11-18

申请号：US17287111

申请日：2019-04-24

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

Inventor： Pol FORNOS MARTINEZ ,  Maria de las Mercedes BLANCO ROLLAN ,  Ismael FERNANDEZ AYMERICH

IPC: B29C64/153 ,  B29C64/314 ,  B29C64/336 ,  B29C64/255 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B29C64/393 ,  B33Y50/02

Abstract: An apparatus is described which comprise a material mixer to provide build material from at least a first build material supply and a second build material supply to a build unit of a 3D printer. The first build material and the second build material are mixed according to a mixing ratio. The apparatus further comprises a processor to determine the mixing ratio based on inputs indicating at least print job characteristics and material constraints.

公开(公告)号：US20220001626A1

公开(公告)日：2022-01-06

申请号：US17285056

申请日：2019-04-26

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

Inventor： Pol FORNOS MARTINEZ ,  Maria de las Mercedes BLANCO ROLLAN ,  Ismael FERNANDEZ AYMERICH

IPC: B29C64/40 ,  B29C64/364 ,  B29C64/295 ,  B29C64/393

Abstract: An apparatus comprises a processor and a machine-readable storage medium storing machine-readable instructions executable by the processor. The machine-readable instructions comprise instructions to cause the processor to create 3D print data including data defining one or more objects to be printed in a build chamber of a 3D printer and data defining, in addition to the one or more objects, a shield to be printed to shield the one or more printed objects in the build chamber to reduce heat dissipation to an outside of the build chamber. The shield is designed depending on a thermal behavior of the build chamber and/or depending on a thermal behavior of the one or more objects to be printed.