Device for determining a quantity of consumable product present in a reservoir and corresponding device for printing documents
US6310635A · kind A · utility
6Cited by
5References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1998 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | May 22, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Determination of the quantity of consumable product, notably of ink, remaining in a reservoir. A capacitor (36) is formed on each side of the reservoir (24) and a resonant circuit including this capacitor is formed with a circuit forming a notional inductor (74), such as a gyrator, and another capacitor (68), the capacitor (36) being integrated into the circuit forming a notional inductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.