公开(公告)号：US20230205173A1

公开(公告)日：2023-06-29

申请号：US17997184

申请日：2020-05-21

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

Inventor： Salvador Sanchez Ribes ,  Jason C. Hower ,  Jeremy Harlan Donaldson ,  Sergio Puigardeu Aramendia ,  Marc Garcia Grau

IPC: G05B19/4099 ,  B29C64/393 ,  B33Y50/02

CPC classification number: G05B19/4099 ,  B29C64/393 ,  B33Y50/02 ,  B29C64/165

Abstract: A method comprising dividing a build model comprising an object model arranged within a virtual volume into cross-sectional layers along a vertical axis. The layers represent layers of an additive manufacturing process. A set of base layers is identified with each of the base layers comprising a flat bottom surface of the object model. A base characteristic is assigned to the set of base layers. A set of bulk layers is identified which excludes the set of base layers. A bulk characteristic is assigned to the set of bulk layers. An additive manufacturing apparatus is instructed to build a build cake according to the build model, layers and assigned characteristics, so a fluid agent is deposited at a first rate for the set of bulk layers having the bulk characteristic and a second rate, slower than the first rate, for the set of base layers having the base characteristic.

公开(公告)号：US20210245247A1

公开(公告)日：2021-08-12

申请号：US17047513

申请日：2018-10-29

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

Inventor： Jason C. Hower ,  Mohammed S. Shaarawi ,  Vladek P. Kasperchik ,  James McKinnell ,  Jennifer L. Wu

IPC: B22F10/47 ,  B22F10/14 ,  B22F1/00 ,  B33Y10/00

Abstract: In an example of a method for three-dimensional printing, a first amount of a binding agent is selectively applied, based on a 3D object model, to individual build material layers of a particulate build material including metal particles to forming an intermediate structure. The binding agent and/or a void-formation agent is selectively applied, based on the 3D object model, to at least one interior layer of the individual build material layers so that a total amount of the binding agent, the void-formation agent, or both the binding agent and the void-formation agent in the at least one of the individual build material layers is greater than the first amount. This patterns an area that is to contain voids. The intermediate structure is heated to form a 3D structure including a void-containing breakable connection.

公开(公告)号：US20240246147A1

公开(公告)日：2024-07-25

申请号：US18628434

申请日：2024-04-05

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

Inventor： Jason C. Hower ,  Mohammed S. Shaarawi ,  Vladek P. Kasperchik ,  James McKinnell ,  Jennifer L. Wu

IPC: B22F10/14 ,  B22F1/107 ,  B22F10/47 ,  B33Y10/00

CPC classification number: B22F10/14 ,  B22F1/107 ,  B22F10/47 ,  B33Y10/00

Abstract: In an example of a method for three-dimensional printing, a first amount of a binding agent is selectively applied, based on a 3D object model, to individual build material layers of a particulate build material including metal particles to forming an intermediate structure. The binding agent and/or a void-formation agent is selectively applied, based on the 3D object model, to at least one interior layer of the individual build material layers so that a total amount of the binding agent, the void-formation agent, or both the binding agent and the void-formation agent in the at least one of the individual build material layers is greater than the first amount. This patterns an area that is to contain voids. The intermediate structure is heated to form a 3D structure including a void-containing breakable connection.

公开(公告)号：US10759201B2

公开(公告)日：2020-09-01

申请号：US16173925

申请日：2018-10-29

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

Inventor： Carlos Millan-Lorman ,  Jason C. Hower ,  Cesar Fernandez ,  Timothy Wagner

IPC: B41J11/46 ,  B41J2/045 ,  B41J13/00 ,  B41J15/04

Abstract: In an example implementation, a method of adjusting frame length in an inkjet web press includes measuring a time T1 between a first sensor sensing a first mark and a second sensor sensing a second mark, and measuring a time T2 between the second sensor sensing the second mark and the first sensor sensing a next first mark. The method includes adjusting a gap between printed frames when T1 does not equal T2.

公开(公告)号：US11958110B2

公开(公告)日：2024-04-16

申请号：US17047513

申请日：2018-10-29

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

Inventor： Jason C. Hower ,  Mohammed S. Shaarawi ,  Vladek P. Kasperchik ,  James McKinnell ,  Jennifer L. Wu

IPC: B22F10/00 ,  B22F1/107 ,  B22F10/14 ,  B22F10/47 ,  B33Y10/00

CPC classification number: B22F10/14 ,  B22F1/107 ,  B22F10/47 ,  B33Y10/00

Abstract: In an example of a method for three-dimensional printing, a first amount of a binding agent is selectively applied, based on a 3D object model, to individual build material layers of a particulate build material including metal particles to forming an intermediate structure. The binding agent and/or a void-formation agent is selectively applied, based on the 3D object model, to at least one interior layer of the individual build material layers so that a total amount of the binding agent, the void-formation agent, or both the binding agent and the void-formation agent in the at least one of the individual build material layers is greater than the first amount. This patterns an area that is to contain voids. The intermediate structure is heated to form a 3D structure including a void-containing breakable connection.

公开(公告)号：US20210362243A1

公开(公告)日：2021-11-25

申请号：US16605206

申请日：2018-07-27

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

Inventor： Sergio Puigardeu Aramendia ,  Michael G. Monroe ,  Jason C. Hower

IPC: B22F12/55 ,  B22F10/14 ,  B22F10/30 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/165 ,  B29C64/209 ,  B29C64/393

Abstract: An example three-dimensional printing method is described, comprising selectively depositing droplets of a liquid agent on a layer of build material, by depositing liquid agent on the layer of build material from a first distance above the layer, for example on a first part of the layer, and depositing liquid agent on the layer of build material from a second distance above the layer, for example on a second part of the layer. An example 3D printer is also described.

公开(公告)号：US10112420B2

公开(公告)日：2018-10-30

申请号：US15514064

申请日：2014-09-26

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

Inventor： Carlos Millan-Lorman ,  Jason C. Hower ,  Cesar Fernandez ,  Timothy Wagner

IPC: B41J13/00 ,  B41J11/46 ,  B41J15/04

Abstract: In an example implementation, a method of adjusting frame length in an inkjet web press includes measuring a time T1 between a first sensor sensing a first mark and a second sensor sensing a second mark, and measuring a time T2 between the second sensor sensing the second mark and the first sensor sensing a next first mark. The method includes adjusting a gap between printed frames when T1 does not equal T2.

公开(公告)号：US20170291435A1

公开(公告)日：2017-10-12

申请号：US15514064

申请日：2014-09-26

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

Inventor： Carlos Millan-Lorman ,  Jason C. Hower ,  Cesar Fernandez ,  Timothy Wagner

IPC: B41J13/00

CPC classification number: B41J13/0009 ,  B41J11/46 ,  B41J15/04

Abstract: In an example implementation, a method of adjusting frame length in an inkjet web press includes measuring a time T1 between a first sensor sensing a first mark and a second sensor sensing a second mark, and measuring a time T2 between the second sensor sensing the second mark and the first sensor sensing a next first mark. The method includes adjusting a gap between printed frames when T1 does not equal T2.