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：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：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.