Fluid ejection device with integrated ink level sensors
US9707771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2014 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Jan 3, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14354
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an embodiment, a fluid ejection device includes a fluid feed slot formed in a printhead die and a plurality of printhead-integrated ink level sensors (PILS). A fluid ejection device may include a first PILS to sense an ink level of a first chamber in fluid communication with the fluid feed slot, the first PILS to detect an empty ink level of the first chamber when the fluid ejection device is at a first ink level state, and a second PILS to sense an ink level of a second chamber in fluid communication with the fluid feed slot, the second PILS to detect an empty ink level of the second chamber when the fluid ejection device is at a second ink level state, different than the first ink level state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.