Printhead-integrated ink level sensor with central clearing resistor
US10532579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2015 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Nov 10, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/13
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present subject matter relates to printhead-integrated ink level sensor (PILS) system. In an example implementation, the PILS system includes a sense capacitor plate in a fluid sensing chamber to sense a level of fluid in the fluid sensing chamber. The fluid sensing chamber is in fluid communication with a fluid reservoir of the printhead to receive fluid from the fluid reservoir. The sense capacitor plate includes at least one slot. The PILS system further includes at least one central clearing resistor and at least one peripheral clearing resistor to clear the fluid sensing chamber of the fluid. The central clearing resistor is provided in the at least one slot of the sense capacitor plate. The at least one peripheral resistor is provided in the fluid sensing chamber surrounding the sense capacitor plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.