公开(公告)号：US20210004654A1

公开(公告)日：2021-01-07

申请号：US16976876

申请日：2018-03-08

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

Inventor： Peter MOROVIC ,  Jan MOROVIC ,  Pere GASPARIN TALARN ,  Victor DIEGO GUTIERREZ ,  Javier MAESTRO GARCIA

IPC: G06K15/02 ,  G06K15/00

Abstract: Certain examples described herein relate to printer calibration. In some cases, adjustment data is received, indicating an adjustment to be applied to a given colorant. A Neugebauer Primary area coverage (NPac) vector defining an operating set of Neugebauer Primaries (NPs) is obtained. Configuration data is determined, dependent on the operating set of NPs. The configuration data maps colorant adjustments to relationships between NPs in the operating set, for both an increase and a decrease in the given colorant. In some cases, the configuration data and the adjustment parameters are used to identify first and second subsets of the operating set of NPs. The NPac vector is adjusted by decreasing an area coverage of an NP in the first subset and complementarily increasing an area coverage of an NP in the second subset.

公开(公告)号：US20210349440A1

公开(公告)日：2021-11-11

申请号：US17267389

申请日：2019-01-31

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

Inventor： Victor DIEGO GUTIERREZ ,  Jordi SANROMA GARRIT ,  Manuel FREIRE GARCIA ,  Enrique GURDIEL GONZALEZ

IPC: G05B19/4099 ,  B33Y50/00 ,  B29C64/386 ,  B22F10/80

Abstract: In an example, a method includes receiving, at least one processor, object model data representing at least a portion of an object that is to be generated by an additive manufacturing apparatus by fusing build material within a fabrication chamber, wherein the object model data comprises a mesh model comprising data describing a surface of the object. A geometrical compensation vector may be determined for the object model data, the geometrical compensation vector having a first component applying to a first axis of the fabrication chamber and a second component applying to a second axis of the fabrication chamber. A geometrical compensation to apply to at least one location on the surface of the object may be determined by determining a product of the geometrical compensation vector and a vector indicative of the normal of the object surface at the location and the determined geometrical compensation may be applied to the object model data to generate modified object model data.

公开(公告)号：US20210181714A1

公开(公告)日：2021-06-17

申请号：US17270379

申请日：2019-01-31

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

Inventor： Enrique GURDIEL GONZALEZ ,  Victor DIEGO GUTIERREZ ,  Manuel FREIRE GARCIA

IPC: G05B19/4099 ,  B33Y50/00 ,  B22F10/80 ,  B29C64/386

Abstract: In an example, a method includes receiving, at at least one processor, object model data representing at least a portion of an object that is to be generated by an additive manufacturing apparatus by fusing build material within a fabrication chamber. At least one of a plurality of different geometrical compensation models to be applied to the object model data may be selected wherein the geometrical compensation models are to determine geometrical compensations to compensate for object deformation In additive manufacturing. An object generation operation based on a modification of the object model data using the or each selected geometrical compensation mode may be simulated and predicted attributes of the object when generated based on the or each simulation may be displayed.