Re-circulating fluid delivery system
US6652080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | May 7, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A fluid delivery system includes a print cartridge and a fluid supply. The print cartridge includes a housing structure, an air-fluid separator structure within the housing structure, including an air vent region in communication with the seperator structure. A fluid ejector is mounted to the housing structure, and a fluid plenum within the housing structure is in fluid communication with the fluid ejector. A fluid reservoir in the housing structures is in fluid communication with the plenum for supplying fluid to the plenum under negative pressure. A fluid re-circulation path is provided in the housing structure through the separator structure and the fluid plenum. A pump structure re-circulates fluid and air through the re-circulation path during a pump mode. The fluid supply is continuously or intermittently fluidically coupled to the fluid reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.