公开(公告)号：US20230373217A1

公开(公告)日：2023-11-23

申请号：US18248152

申请日：2020-10-07

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

Inventor： Jeffrey L. THIELMAN ,  Alejandro MIELGO BARBA

IPC: B41J2/165 ,  B41J2/17

CPC classification number: B41J2/16523 ,  B41J2/16508 ,  B41J2/1721 ,  B41J2002/1742

Abstract: It is herein disclosed a waste printing fluid collection unit that may be part of a servicing station and/or a printing system, the waste printing fluid collection unit comprising; a collection reservoir for collecting the waste printing fluid, the collection reservoir having an end wall that separates the collection reservoir from ambient air; and a wick extending from the end wall towards the reservoir; wherein the wick is on a first side, connected to the end wall and, on a second side extends into the reservoir to contact the waste printing fluid.

公开(公告)号：US20230114087A1

公开(公告)日：2023-04-13

申请号：US17906506

申请日：2020-03-17

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

Inventor： Jeffrey L. THIELMAN ,  Alejandro MIELGO BARBA

IPC: B41J2/165 ,  B41J29/17

Abstract: Disclosed herein is a print head maintenance cartridge, a printing device and a method of cleaning a print head. The print head maintenance assembly comprises a maintenance cartridge that is movable along a first direction and a wiper assembly comprising a wiper element for wiping a print head. The wiper element extends along the first direction. The maintenance cartridge comprises a guide rail extending along the first direction. The guide rail is to engage with the wiper assembly to adjust a position of the wiper element depending on a relative position between the maintenance cartridge and the wiper assembly in the first direction.

公开(公告)号：US20210178688A1

公开(公告)日：2021-06-17

申请号：US16076222

申请日：2017-07-28

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

Inventor： David R. OTIS, Jr. ,  Kevin E. SWIER ,  Jeffrey L. THIELMAN

IPC: B29C64/321 ,  B29C64/357 ,  B65G53/60

Abstract: A three-dimensional (3D) printer and method having a pneumatic conveyance system (PCS) to transport build material to a vessel of the 3D printer. A feeder coupled to the vessel regulates the discharge flow of build material from the vessel. A sealing control coupled to the feeder reduces air inflow.