Systems, methods, and devices for controlling ink delivery to print heads
US7040729B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2004 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Feb 13, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17556
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Systems and methods for delivering ink by controlling a pressure of the ink. A vacuum or partial vacuum is maintained at an ink reservoir that supplies ink to one or more print heads. As the temperature of the inks or of the printing system changes, the pressure of the ink experiences a corresponding change. The printing system is equipped with temperature sensors to detect the temperature of the ink, the print heads, or the printing system. The temperature data is processed and an adjustment is made to the partial vacuum maintained on the ink reservoir to accommodate changes in temperature. The temperatures are repeatedly sampled to ensure that the pressure of the partial vacuum is properly maintained for current temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.