Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method therefor
US9170233B2 · kind B2 · utility
1Cited by
2References
26Claims
0Family size
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Key dates
| Filing date | Apr 18, 2014 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Apr 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0853
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic permeability detector includes an LC oscillator circuit including a coil and a capacitor; and a resistor connected in series with the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.