Determining a healthy fluid ejection nozzle
US8336981B2 · kind B2 · utility
17Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2009 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | May 28, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49401
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of determining a healthy fluid ejection nozzle includes measuring changes in impedance across the nozzle as fluid passes through it. A printhead includes a metal probe that intersects an ink nozzle and an integrated circuit to sense a change in impedance across the nozzle through the metal probe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.