Ink delivery system for supplying ink to multiple printheads at constant pressure
US10252540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2017 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | May 1, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink delivery system for an inkjet printer includes: a positive ink line; a negative ink line; and one or more print modules interconnected between the positive ink line and the negative ink line. Each print module includes: an inlet port; an outlet port; a printhead interconnected between the inlet port and the outlet port; a control valve positioned at the inlet port for controlling an ink pressure in the printhead; an ink pressure sensor for sensing an ink pressure in the print module; and a controller for receiving feedback from the pressure sensor and controlling the control valve. During printing, the ink pressure sensor, the controller and the control valve cooperate to control a backpressure in the printhead within a predetermined backpressure range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.