公开(公告)号：US20210379836A1

公开(公告)日：2021-12-09

申请号：US17284712

申请日：2019-04-23

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

Inventor： Roger FADURDO ORELLANA ,  Pol FORNOS MARTINEZ ,  Salvador SANCHEZ RIBES ,  Ismael FERNANDEZ AYMERICH ,  Manuel FREIRE GARCIA

IPC: B29C64/40 ,  B22F12/55 ,  B22F10/85 ,  B22F10/14 ,  B29C64/393 ,  B33Y50/02 ,  B33Y30/00 ,  B29C64/165

Abstract: A system includes a controller to receive data corresponding to an object or slices of the object to be generated by a 3D printer, wherein the 3D printer includes an array of printhead nozzles to selectively eject a print agent on a layer of build material in a build chamber having a build chamber wall, the array of printhead nozzles spanning substantially the full width of the build chamber and moveable along a length of the build chamber. The controller to generate first print data used to generate layers of the object based on the received object data, and to generate second print data used to generate layers of a sacrificial barrier located between the object and the build chamber wall, the second print data is generated such that different parts of the sacrificial barrier are generated using a different plurality of nozzles of the array of printhead nozzles.