公开(公告)号：US20210323314A1

公开(公告)日：2021-10-21

申请号：US16500396

申请日：2018-07-08

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

Inventor： Mark A Devries ,  Paul Mark Haines ,  Ronald J Ender

IPC: B41J2/175

Abstract: In one example, a liquid delivery system for an inkjet type dispenser includes: a printhead unit; a reservoir separate from the printhead unit; a flow path from the reservoir through the printhead unit and back to the reservoir; an interconnect to connect Na removable liquid container to the flow path; and a single pump to pump ink along the flow path: from the reservoir through the printhead unit and back to the reservoir; and from the interconnect to the reservoir when a removable liquid container is connected to the interconnect.

公开(公告)号：US10226940B2

公开(公告)日：2019-03-12

申请号：US15504013

申请日：2014-08-14

Applicant: HEWLETT PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： David Olsen ,  Mark A Devries

IPC: B41J2/19 ,  B41J2/175 ,  B41J2/18 ,  B41J29/13

Abstract: Systems and related methods are described for circulating and printing fluid onto a printer media. In one example, a system can include an air isolation chamber to pool printing fluid circulated within the system. The air isolation chamber can be fluidly connected to a printhead assembly to eject a portion of the printing fluid onto the printer media. The system can further include a pump to pump printing fluid from the air isolation chamber to the printhead assembly. The system can further include a pressure control valve along a return line between the air isolation chamber and the printhead assembly to regulate the flow of unejected printing fluid to the air isolation chamber to control printing fluid pressure over the printhead assembly.

公开(公告)号：US11440330B2

公开(公告)日：2022-09-13

申请号：US16500396

申请日：2018-07-08

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

Inventor： Mark A Devries ,  Paul Mark Haines ,  Ronald J Ender

IPC: B41J2/175 ,  B41J2/18

Abstract: In one example, a liquid delivery system for an inkjet type dispenser includes: a printhead unit; a reservoir separate from the printhead unit; a flow path from the reservoir through the printhead unit and back to the reservoir; an interconnect to connect a removable liquid container to the flow path; and a single pump to pump ink along the flow path: from the reservoir through the printhead unit and back to the reservoir; and from the interconnect to the reservoir when a removable liquid container is connected to the interconnect.