Magnetic material sensing device, magnetic material sensing method, and image forming apparatus
AssigneeFuji Xerox Co., Ltd.
InventorsKunihiro Takahashi, Mario Fuse, Shoji Yamaguchi
Life of this patent
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Abstract
A magnetic material sensing device which senses a magnetic material by detecting a signal which the magnetic material emits when an alternating magnetic field is applied, the magnetic material sensing device includes: an exciting coil which applies the alternating magnetic field; a receiving coil which receives a first signal which is generated due to the alternating magnetic field; a noise signal removing part that removes, from the first signal, a noise signal of an object which reflects the alternating magnetic field; and a detecting part that detects, from the noise signal-removed signal, the signal emitted from the magnetic material.
Claims16
A magnetic material sensing device which senses a magnetic material by detecting a signal which the magnetic material emits when an alternating magnetic field is applied, the magnetic material sensing device comprising:
- an exciting coil which applies the alternating magnetic field;
- a receiving coil which receives a first signal which is generated due to the alternating magnetic field;
- a noise signal removing part that removes, from the first signal, a noise signal of an object which reflects the alternating magnetic field;
- and
- a detecting part that detects, from the noise signal-removed signal, the signal emitted from the magnetic material.
A magnetic material sensing method for sensing a magnetic material by detecting a signal which the magnetic material emits when an alternating magnetic field is applied, the magnetic material sensing method comprising:
- applying the alternating magnetic field;
- receiving a first signal which is generated due to the alternating magnetic field;
- removing, from the first signal, a noise signal of an object which reflects the alternating magnetic field;
- and
- detecting, from the noise signal-removed signal, the signal emitted from the magnetic material.
An image forming apparatus which senses a magnetic material by detecting a signal which the magnetic material emits when an alternating magnetic field is applied, the image forming apparatus comprising:
- an exciting coil which applies the alternating magnetic field;
- a receiving coil which receives a first signal which is generated due to the alternating magnetic field;
- a noise signal removing part that removes, from the first signal, a noise signal of an object which reflects the alternating magnetic field;
- and
- a detecting part that detects, from the noise signal-removed signal, the signal emitted from the magnetic material.
Dependencies are inferred from the claim text.