公开(公告)号：US20230391104A1

公开(公告)日：2023-12-07

申请号：US18308971

申请日：2023-04-28

Applicant: Memjet Technology Limited

Inventor： Zhenya Yourlo ,  Peter Crichton ,  Mei Wang ,  Nicolas Chin ,  Craig Meyer

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

CPC classification number: B41J2/19 ,  B41J2/18 ,  B41J2/17563

Abstract: An ink delivery system for delivering ink to an inkjet printhead includes: an ink tank; the inkjet printhead having a printhead inlet port and a printhead outlet port; an ink supply line connected between the ink tank and the printhead inlet port; an ink return line connected between the ink tank and the printhead outlet port; an ink recirculation pump positioned in the ink return line; an ink filter positioned in the ink return line; a bypass line for bypassing ink around the ink filter; a bypass valves for controlling flow of ink either through the ink filter or through the bypass line; and a controller for coordinating the bypass valve and the pump. The controller is configured to pump ink from the printhead outlet port to the ink tank via the bypass line when the return line contains air.

公开(公告)号：US11433683B2

公开(公告)日：2022-09-06

申请号：US16929019

申请日：2020-07-14

Applicant: Memjet Technology Limited

Inventor： Craig Meyer ,  Jason Mark Thelander ,  Mark Profaca ,  Stuart Wheatley

IPC: B41J2/175 ,  B41J2/18

Abstract: An ink delivery system for an inkjet printer includes: (a) an ink delivery module for supplying and receiving ink in a circulating fluidic loop having positive and negative pressure ink lines; (b) print modules interconnected between the positive pressure ink line and the negative pressure ink line. The ink delivery module has regulator pumps for gross control of ink pressure in the print modules; and each print module has a respective pressure control system for dynamic fine control of ink pressure in each individual print module.