公开(公告)号：US11155037B2

公开(公告)日：2021-10-26

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：US11207828B2

公开(公告)日：2021-12-28

申请号：US16098411

申请日：2017-07-19

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

Inventor： Juan Manuel Zamorano ,  Luis Ortega ,  Sergio De Santiago

IPC: B29C64/364 ,  B33Y30/00 ,  B33Y40/00 ,  B29C64/165

Abstract: A three-dimensional printer comprising means for build material, a printer carriage and a curtain. The means for depositing the build material deposits same on a printing zone and/or on one or more build material layers deposited on the printing zone. The printer carriage is to move along a first axis over the printing zone and comprises means for treating the build material. The curtain is attached to a first side of the printer carriage with a first side of the curtain and/or configured to move along with the printer carriage such that the curtain covers at least an area of the print zone, wherein the area varies dependent on the moving of the printer carriage over the print zone.

公开(公告)号：US10892692B2

公开(公告)日：2021-01-12

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 ,  H02P7/00 ,  B33Y50/02 ,  H02P7/03 ,  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.