Magnetic erasing device
AssigneeZero Lab Co., Ltd.
InventorRitsuo Koga
Life of this patent
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Abstract
A magnetic erasing device including a magnet that includes an S pole and an N pole extending along an axial direction of the magnet, and a rotation mechanism for rotating the magnet in a housing around an axis of the magnet, wherein lines of magnetic force generated around the axis of the magnet during rotation of the magnet are designed to be applied to magnetic particles in the microcapsules to erase a visible image on a magnetic panel when the axis of the magnet is spaced from a surface of the magnetic panel by a predetermined distance.
Claims20
A magnetic erasing device for a magnetophoretic type magnetic panel, the magnetophoretic type magnetic panel including a plurality of microcapsules arranged two-dimensionally, each microcapsule including magnetic particles and nonmagnetic particles, the magnetic erasing device comprising:
- a shaft rotatable about an axis;
- a magnet comprising an S pole and an N pole, the magnet coupled to the shaft and extending along the axis;
- and
- a rotation mechanism coupled to the shaft so that the magnet is rotatable in a housing around the axis, wherein, during operation of the magnetic erasing device, lines of magnetic force generated during rotation of the magnet are applied to the magnetic particles in the microcapsules to erase a visible image on the magnetic panel when the magnet is substantially parallel with and spaced from a surface of the magnetic panel by a predetermined distance.
A magnetic panel system comprising:
- a magnetophoretic type magnetic panel including a plurality of microcapsules arranged two-dimensionally, each microcapsule including magnetic particles and nonmagnetic particles;
- and
- a magnetic erasing device for use in erasing a visible image on the magnetic panel, the magnetic erasing device comprising:
- a shaft rotatable about an axis;
- a magnet comprising an S pole and an N pole, the magnet coupled to the shaft and extending along the axis;
- and
- a rotation mechanism coupled to the shaft so that the magnet is rotatable in a housing around the axis,
- wherein, during operation, lines of magnetic force generated during rotation of the magnet are applied to the magnetic particles in the microcapsules to erase the visible image on the magnetic panel when the magnet is substantially parallel with and spaced from a surface of the magnetic panel by a predetermined distance.
A magnetic erasing device comprising:
- a housing;
- a support plate separating the housing into first and second internal spaces;
- a motor disposed in the first internal space of the housing;
- a plurality of magnets disposed in the second internal space of the housing, each magnet comprising an S pole and an N pole;
- a gear mechanism located between the motor and the magnets;
- a drive shaft coupled between the motor and the gear mechanism, wherein, during operation of the magnetic erasing device, the motor causes the drive shaft to rotate so the magnetics rotate around an axis extending between the support plate and an upper end of the housing.
Dependencies are inferred from the claim text.