公开(公告)号：US20210206093A1

公开(公告)日：2021-07-08

申请号：US16075683

申请日：2017-04-20

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

Inventor： Warren Scott MARTIN ,  Jeffrey A. WAGNER ,  Michael GRAHAM

IPC: B29C64/35

Abstract: In some examples, a service module of a three-dimensional (3D) printer can include a housing, a web to clean a print head of the 3D printer, where the web is housed by the housing, and where the service module is removably attached to the 3D printer, and a shield to shield the web.

公开(公告)号：US20240017553A1

公开(公告)日：2024-01-18

申请号：US17867400

申请日：2022-07-18

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

Inventor： Russell Sterling SAUER ,  Jeffrey A. WAGNER

IPC: B41J2/175 ,  B41J2/045

CPC classification number: B41J2/17566 ,  B41J2/04501 ,  B41J2002/17569

Abstract: An example printing device includes a plurality of printing agent reservoirs and a printing assembly that is to emit printing agent onto print media. In addition, the printing device includes a pumping assembly fluidly coupled between the plurality of printing agent reservoirs and the printing assembly. The pumping assembly includes a motor and is to transport the printing agent from the plurality of printing agent reservoirs to the printing assembly. Further, the printing device includes a controller coupled to the motor. The controller is to: receive a work parameter of the motor; receive printing agent usage data; and determine that a first printing agent reservoir of the plurality of printing agent reservoirs is empty based on the work parameter and the printing agent usage data.

公开(公告)号：US20210206171A1

公开(公告)日：2021-07-08

申请号：US16074835

申请日：2017-04-13

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

Inventor： James D. PLYMALE ,  Donnell D. DANIELS ,  Kyle MANNARI ,  Jeffrey A. WAGNER ,  Weiyun SUN ,  Rachelle COBB

IPC: B41J2/165

Abstract: Printers and associated printer maintenance methods and apparatus are disclosed. An example printer includes a nozzle to dispense fluid; a wiper to wipe the nozzle during a maintenance event; and a controller to cause the nozzle to dispense fluid during the maintenance event while the wiping material engages or is immediately adjacent the nozzle to deter a substance from being present within the nozzle.

公开(公告)号：US20170246858A1

公开(公告)日：2017-08-31

申请号：US15519856

申请日：2014-10-31

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

Inventor： Cristina VALLE DE LA MUNOZA ,  Jeffrey A. WAGNER ,  Justin M. ROMAN

IPC: B41J2/045 ,  B41J25/00 ,  B41J2/175

CPC classification number: B41J2/04535 ,  B41J2/04563 ,  B41J2/04586 ,  B41J2/175 ,  B41J19/202 ,  B41J25/003 ,  B41J29/38

Abstract: Ambient temperature based flow rates can in an example include a setting a flow rate of ink to a printhead mounted in a carriage based on an ambient temperature associated with the printhead, measuring a flow rate of ink to the printhead, and causing a decrease in a velocity of the carriage in response to the flow rate of ink satisfying the threshold flow rate.