Methods, systems, and devices for controlling ink delivery to one or more print heads
US6705711B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2002 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Jun 6, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17509
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing system includes a printing device fluidly communicating with a main ink reservoir and a vacuum pump. The main ink reservoir refills one or more reservoirs mounted within the printing device when the ink contained therein falls below a defined tolerance level. The vacuum pump varies a level of a vacuum or partial vacuum within the reservoir to maintain a pressure level at one or more nozzles of one or more print heads mounted in the printing device. Variations in the level of the vacuum or partial vacuum can be based upon the desired pressure at the nozzles, the particular volume or level of ink stored within the reservoir, and the type of ink stored within the reservoir. Through creating the vacuum or partial vacuum, the inks stored within the reservoir are degassed before being delivered to the print head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.