公开(公告)号：US20210362427A1

公开(公告)日：2021-11-25

申请号：US16605348

申请日：2018-06-19

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

Inventor： Sergio Gonzalez Martin ,  Matthew A Shepherd ,  Kyle Mannari

IPC: B29C64/393 ,  G06T17/20 ,  G06F30/10 ,  B33Y10/00 ,  B33Y50/02

Abstract: In an example, a method includes receiving, at least one processor, object model data describing at least part of a three-dimensional object to be generated using additive manufacturing. A model type may be determined from the object model data by at least one processor. When the model type is a mesh model, a volumetric model describing at least part of the three-dimensional object in terms of a plurality of sub-volumes may be determined by at least one processor. When the model type is a volumetric model, the sub-volumes which represent a surface of the three-dimensional object may be determined by at least one processor.

公开(公告)号：US20180345662A1

公开(公告)日：2018-12-06

申请号：US15780093

申请日：2016-03-28

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

Inventor： Lisa Michels ,  Randal J Morrison ,  Kyle Mannari ,  Cristopher Royce Jansson

IPC: B41J2/045

CPC classification number: B41J2/235 ,  B41J2/04543 ,  B41J2/04573 ,  B41J2/0458 ,  B41J2/16526 ,  B41J2/1707 ,  B41J2002/1657 ,  B41J2002/16573

Abstract: A printer includes a printhead assembly, a service station assembly, and a controller. The printhead assembly includes nozzles to eject fluid drops. The nozzles are divided into a least two groups with each group assigned a burst drop count, a post-burst delay, and a burst order. The service station assembly is to receive fluid ejected from the nozzles during spits. The controller is to control a spit of the printhead assembly by ejecting fluid from the nozzles of each group based on the burst drop count, the post-burst delay, and the burst order of each group until a target drop count for the spit is reached.