| 摘要 |
<p>The invention relates to the following magnetic sensor device, which can prevent the magnetic powder adsorbed by a magnet for applying a magnetic field from being adsorbed to a magnetic flux detecting part and can reduce the influence caused by the magnetic field of the magnet for applying a magnetic field to the magnetic flux detecting part. In a magnetic pattern detecting device, the magnetic sensor device comprises a magnetic field applying magnet for applying a magnetic field to a medium, and a magnetic sensor element, wherein the magnetic sensor device forms a magnetic flux detecting part for detecting the magnetic flux at a state of applying a bias magnetic field to the medium which is applied with a magnetic field. The magnets for applying the magnetic field are arranged on the two sides of the movement direction of the medium relative to the magnetic sensor element so as to act as a first magnet and a second magnet for applying magnetic fields, and the first magnet and the second magnet for applying magnetic fields, which are opposite to each other in the movement direction of the medium, are opposite to each other by different poles in a manner of clamping the magnetic sensor element.</p> |
