公开(公告)号：US20210008802A1

公开(公告)日：2021-01-14

申请号：US16088616

申请日：2017-03-28

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

Inventor： Pedro GARCIA ,  Juan Manuel ZAMORANO ,  Luis ORTEGA

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02

Abstract: A printer comprising an electrical load, a control system and an electrical circuit to switchably connect the electrical load to a first phase and a second phase of a polyphase power supply. The control system monitors a first electrical current drawn by the printer on the first phase and a second electrical current drawn by the printer on the second phase. When a difference between the first electrical current and the second electrical current satisfies a threshold condition, the control system controls the electrical circuit to disconnect the electrical load from the first phase and connect the electrical load to the second phase.

公开(公告)号：US20210283848A1

公开(公告)日：2021-09-16

申请号：US16316152

申请日：2016-09-13

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

Inventor： Marina FERRAN FARRES ,  Esteve COMAS ,  Juan Manuel ZAMORANO

IPC: B29C64/393 ,  B29C64/295 ,  B33Y50/02

Abstract: A printer is disclosed. The printer comprises a resistive load and a control system. The control system is to control the resistive load. The control system is to determine a resistance value of the resistive load. The control system is to determine a voltage transition mode for transitioning the voltage applied across the resistive load to a target voltage value depending on the resistance value. The control system is to transition the voltage applied across the resistive load to the target voltage value according to the determined voltage transition mode.

公开(公告)号：US20200331205A1

公开(公告)日：2020-10-22

申请号：US16087704

申请日：2017-07-24

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

Inventor： Albert TRENCHS MAGANA ,  Juan Manuel ZAMORANO ,  Michele VERGANI

IPC: B29C64/393 ,  G01K1/02 ,  G01J5/10 ,  B33Y50/02 ,  B29C64/245 ,  B29C64/153

Abstract: Method and devices for calibrating heat sensors are provided. The heat sensors may measure, from a distance, temperatures of build materials arranged on build platforms. Using the heat sensors, remote temperature measurements of regions may be acquired from a distance. Using temperature sensors integrated in the build platforms, local temperature measurements of regions of the build platforms may be acquired. The local temperature measurements may be compared with the remote temperature measurements to calculate differences. Correction factors associated with the calculated differences may then be applied when acquiring temperature measurements using the heat sensors.

公开(公告)号：US20200079010A1

公开(公告)日：2020-03-12

申请号：US15746782

申请日：2015-10-29

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

Inventor： Juan Manuel ZAMORANO ,  Sergio DE SANTIAGE DOMINGUEZ ,  Marina FERRAN FARRES

IPC: B29C64/153 ,  B29C64/245 ,  B29C64/205 ,  B29C64/264 ,  B29C64/232 ,  B29C64/393

Abstract: In an example, a method comprises providing a layer of build material on a support, and applying energy to the layer of build material using an energy source. The method may further comprise reducing a spacing between the energy source and the support and following the reduction of the spacing, applying energy to the layer of build material using the energy source to cause fusion in at least part of the layer of build material.

公开(公告)号：US20210008801A1

公开(公告)日：2021-01-14

申请号：US16088609

申请日：2017-05-10

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

Inventor： Sergio DE SANTIAGO DOMINGUEZ ,  Juan Manuel ZAMORANO ,  Pedro GARCIA

IPC: B29C64/393 ,  B29C64/209 ,  B29C64/329 ,  B29C64/236

Abstract: It is disclosed a system and a carriage for a 3D printing system comprising: an actuator to move the carriage; a position detection mechanism; a collision detection mechanism; and a controller. The controller to control the movement of the carriage and the controller further comprising: a memory wherein a threshold value and a detection area are stored in, the detection area comprising a set of position values of the carriage; an input to receive a position signal from the position detection mechanism and a detection signal from the collision detection mechanism; and an output to issue an alert signal if the detection signal corresponds to a distance below the threshold value and the position signal is within the detection area

公开(公告)号：US20200298497A1

公开(公告)日：2020-09-24

申请号：US16089871

申请日：2016-12-13

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

Inventor： Juan Manuel ZAMORANO ,  David SORIANO FOSAS ,  Sergio DE SANTIAGO DOMINGUEZ

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y40/10 ,  B29C64/314 ,  B29C64/255 ,  G05B19/4099

Abstract: An apparatus and method for performing a print operation on a 3D printer (110) are described herein. A 3D printing apparatus comprising a 3D printer (110) is arranged to perform a print operation using build material from a build unit (120) unless a value that identifies a first build material stored in the build unit in a first register, which is set according to an initial build powder fill operation of the build unit (120) by a powder management station, is different from a value in a second register, which is set according to the initial build powder fill operation, or modified in response to, or following, a subsequent opening of the build unit (120).

公开(公告)号：US20210213677A1

公开(公告)日：2021-07-15

申请号：US16075918

申请日：2017-07-28

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

Inventor： David SORIANO FOSAS ,  Juan Manuel ZAMORANO ,  Michele VERGANI

IPC: B29C64/165 ,  B33Y80/00 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/393

Abstract: Examples relate to methods of printing a 3D printed tamper evident security structure for protecting a feature; the method comprising repeatedly: depositing a layer of build material; doping one or more than one region of the layer of build material using a dopant to influence a respective electrical attribute of one or more than one region associated with a graph of the structure; and agglomerating one or more than one selected portion of the layer of the build material, including the one or more than one doped region of the layer of build material, to form progressively the graph with a predetermined measurable electrical characteristic.

公开(公告)号：US20210008796A1

公开(公告)日：2021-01-14

申请号：US16088623

申请日：2017-04-24

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

Inventor： Juan Manuel ZAMORANO ,  Albert TRENCHS MAGANA ,  Luis Angel ORTEGA ESTORNEL

IPC: B29C64/176 ,  B29C64/25 ,  B29C64/371 ,  B29C64/393

Abstract: A method and system for causing an additive manufacturing system to print objects are described herein. A controller (110) of an additive manufacturing system (100) that comprises a build unit (120) and the controller (110) is arranged to receive print data defining an object to be printed by the additive manufacturing system (100). The controller (110) is arranged to cause the additive manufacturing system (100) to print a further object according to the modified print data, wherein the modified print data is determined on the basis of the print data.

公开(公告)号：US20200313579A1

公开(公告)日：2020-10-01

申请号：US16089655

申请日：2017-07-25

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

Inventor： Michele VERGANI ,  Juan Manuel ZAMORANO ,  Luis ORTEGA

IPC: H02P3/12 ,  H02P7/03 ,  B33Y50/02 ,  B29C64/393

Abstract: Examples relate to back electromotive force controllers for influencing movement of a carriage of a device in an unpowered state; the carriage being moveable by a motor responsive to a motor driver; the controller comprising: braking circuitry to couple power associated with a back electromotive force generated by displacement of the motor, due to carriage movement. to power the motor driver to urge the motor in a contrary direction to the displacement.

公开(公告)号：US20190105841A1

公开(公告)日：2019-04-11

申请号：US16089078

申请日：2016-10-25

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

Inventor： Juan Manuel ZAMORANO ,  David SORIANO FOSAS ,  Sergio DE SANTIAGO DOMINQUEZ

IPC: B29C64/386 ,  B33Y30/00 ,  B33Y50/00 ,  B29C64/255 ,  B22F3/00 ,  G01F23/22

Abstract: An example method for measuring the amount of build material in a build material container of a 3D printer may comprise mounting a belt element tensioned between at least two shafts, and attaching a body to the belt element; driving the body towards a surface of the build material while measuring the advance and the speed of the belt element; detecting a reduction of the speed of the belt element, and determining that the body has then contacted the surface of the build material; and determining the position of the surface of the build material based at least on the measured advance of the belt element.