Paper sheet magnetic detection apparatus
AssigneeGlory Ltd.
InventorsTakahiro Yanagiuchi, Masafumi Chikamori, Jun Hisanaga
Life of this patent
Estimating the term…
Abstract
The object is to avoid degradation of magnetic detection precision arising due to magnetization of transport rollers used for transporting a paper sheet. A paper sheet magnetic detection apparatus that detects a magnetic material in the paper sheet by using a magnetic sensor includes a transport path that transports paper sheets one by one; at least one magnet that is used in the detection of the magnetic material by the magnetic sensor; and a plurality of transport rollers that are arranged near the magnetic sensor and that transport the paper sheet in the transport path. Outer peripheral surfaces of the plurality of transport rollers that face the transport path are made of a non-magnetic material.
Claims15
A paper sheet magnetic detection apparatus that detects magnetic material in paper sheets, comprising:
- a transport path that transports the paper sheets one by one;
- a magnetic sensor that detects the magnetic material;
- at least one magnet that is arranged on one face side of the transport path and generates a bias magnetic field for the magnetic sensor;
- a drive roller that includes an outer peripheral member made of a non-magnetic material arranged on an outer peripheral surface of a core member of the drive roller, the drive roller is arranged near the magnetic sensor on another face side of the transport path and applies a transporting force to each of the paper sheets on the transport path;
- a pinch roller that includes a bearing member made of a magnetic material and an outer peripheral member made of a non-magnetic material arranged on an outer peripheral surface of the bearing member, the pinch roller is arranged on the one face side opposing the drive roller,
- wherein
- the transport path is formed between a first guide surface made of a non-magnetic material and a second guide surface made of a non-magnetic material and the paper sheets are transported between the first guide surface and the second guide surface,
- the pinch roller is arranged in such a manner that only an outer peripheral surface and side surfaces of the outer peripheral member of the pinch roller are exposed through an opening provided in the first guide surface, and
- the drive roller is arranged in such a manner that only an outer peripheral surface and side surfaces of the outer peripheral member of the drive roller are exposed through an opening provided in the second guide surface.
A paper sheet magnetic detection apparatus that detects magnetic material in paper sheets, comprising:
- a transport path that transports the paper sheets one by one;
- a magnetic sensor that detects the magnetic material;
- at least one magnet that is arranged on one side of the transport path and generates a bias magnetic field for the magnetic sensor;
- a first drive roller that includes an outer peripheral member made of a non-magnetic material arranged on an outer peripheral surface of a core member of the first drive roller, the first drive roller is arranged on another side of the transport path, and applies a transporting force to each of the paper sheets on the transport path;
- a first pinch roller that includes a first bearing member made of a magnetic material and an outer peripheral member made of a non-magnetic material arranged on an outer peripheral surface of the first bearing member, the first pinch roller is arranged on the one side on which the at least one magnet is arranged, and opposes the first drive roller, wherein
- an outer diameter of the first pinch roller is smaller than an outer diameter of the first drive roller,
- the transport path is formed between a first guide surface made of a non-magnetic material and a second guide surface made of a non-magnetic material and the paper sheets are transported between the first guide surface and the second guide surface,
- the first pinch roller is arranged in such a manner that only an outer peripheral surface and side surfaces of the outer peripheral member of the first pinch roller are exposed through an opening provided in the first guide surface, and
- the first drive roller is arranged in such a manner that only an outer peripheral surface and side surfaces of the outer peripheral member of the first drive roller are exposed through an opening provided in the second guide surface.
Dependencies are inferred from the claim text.