公开(公告)号：US20200147605A1

公开(公告)日：2020-05-14

申请号：US16616947

申请日：2017-07-18

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

Inventor： Jeremy Harlan Donaldson ,  Stephen Lee Frey ,  Pavel Kornilovich ,  Alexander Govyadinov

IPC: B01L3/00

Abstract: A sample test device is provided that includes a body having an insertion surface spaced apart from a distal end portion and a fluid manipulating assembly disposed in the distal end portion. A mixing receptacle is defined in the fluid manipulating assembly and provides a volume to mix a test mixture. A plunger is disposed in the body and creates a positive air pressure in the mixing receptacle when inserted into the body. A test die is disposed in the fluid manipulation assembly and a fluid path extends from the mixing receptacle to the test die. Activation of the plunger creates a positive pressure in the mixing receptacle to force the test mixture to flow from the mixing receptacle to the test die.

公开(公告)号：US20230116181A1

公开(公告)日：2023-04-13

申请号：US17907306

申请日：2020-04-22

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

Inventor： Salvador Sanchez Ribes ,  Jeremy Harlan Donaldson ,  Macia Sole Pons

IPC: B29C64/176 ,  B29C64/393 ,  B29C64/209 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: According to examples, an apparatus may include a memory on which is stored instructions that when executed by a processor, cause the processor to access a digital file identifying a first plurality of parts to be fabricated in a first level of a build volume in a three-dimensional (3D) fabrication operation and a second plurality of parts to be fabricated in a second level of the build volume. The processor may also determine a first usage of a plurality of nozzles corresponding to fabrication of the first plurality of parts in the first level of the build volume and determine a modification to a property of the second plurality of parts to be fabricated in the second level of the build volume to have a second usage of the plurality of nozzles that differs from the first usage.

公开(公告)号：US20200164371A1

公开(公告)日：2020-05-28

申请号：US16616944

申请日：2017-07-18

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

Inventor： Jeremy Harlan Donaldson ,  Stephen Lee Frey ,  Alexander Govyadinov

IPC: B01L3/00

Abstract: A sample test device is provided that includes a body having an insertion surface spaced apart from a distal end portion and a fluid manipulating assembly disposed in the distal end portion. A mixing receptacle is defined in the fluid manipulating assembly and provides a volume to mix a test mixture. A plunger is disposed in the body and creates a positive air pressure in the mixing receptacle when inserted into the body. A test die is disposed in the fluid manipulation assembly and a fluid path extends from the mixing receptacle to the test die. Activation of the plunger creates a positive pressure in the mixing receptacle to force the test mixture to flow from the mixing receptacle to the test die.

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：US11278889B2

公开(公告)日：2022-03-22

申请号：US16616944

申请日：2017-07-18

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

Inventor： Jeremy Harlan Donaldson ,  Stephen Lee Frey ,  Alexander Govyadinov

IPC: B01L3/00

Abstract: A sample test device is provided that includes a body having an insertion surface spaced apart from a distal end portion and a fluid manipulating assembly disposed in the distal end portion. A mixing receptacle is defined in the fluid manipulating assembly and provides a volume to mix a test mixture. A plunger is disposed in the body and creates a positive air pressure in the mixing receptacle when inserted into the body. A test die is disposed in the fluid manipulation assembly and a fluid path extends from the mixing receptacle to the test die. Activation of the plunger creates a positive pressure in the mixing receptacle to force the test mixture to flow from the mixing receptacle to the test die.

公开(公告)号：US09895889B2

公开(公告)日：2018-02-20

申请号：US15307310

申请日：2014-06-23

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

Inventor： Chien-Hua Chen ,  Jeremy Harlan Donaldson ,  Teressa L. Roth ,  Bradley B Branham

IPC: B41J2/14 ,  B41J2/165 ,  B41J2/155

CPC classification number: B41J2/1433 ,  B41J2/14072 ,  B41J2/155 ,  B41J2/165 ,  B41J2/16538 ,  B41J2/16585 ,  B41J2/1714 ,  B41J2002/14491 ,  B41J2002/16502

Abstract: Examples of a printhead assembly are disclosed herein. An example of the printhead assembly includes a die to print, a base member, and at least one electrode. The electrode may be used to provide a charge to attract and collect particles that would normally otherwise interfere with operation of the die.