Dual coil, translational bias-field device for a magneto-optical system
First Claim
1. A translational, bias-field device for a magneto-optical system having a magneto-optical recording element moving through a first magnetic field created by the bias-field device so that information is selectively recorded on or erased from the recording element, the device comprising:
- (a) a housing;
(b) a first rail for enabling translational movement attached to said housing;
(c) a permanent magnet structure polarized through its cross-section and having a first set of north and south poles on a first surface positioned adjacent the magneto-optic recording element for providing the first magnetic field to the recording element, and a second set of north and south poles on a second surface, and said permanent magnet structure attached to said first rail which enables translational movement of said magnet structure;
(d) a first coil positioned adjacent to said magnet structure which, when energized, imparts a second magnetic field to said permanent magnet structure for imparting motion to said permanent magnet structure; and
(e) a second coil positioned adjacent to said magnet which, when energized, imparts a third magnetic field to said permanent magnet structure for also imparting motion to said permanent magnet structure.
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Accused Products
Abstract
A translational, bias-field device for a magneto-optical system having a magneto-optical recording element moving through a first magnetic field created by the bias-field device so that information is selectively recorded on or erased from the recording element, the device comprises a housing and a first rail for enabling translational movement attached to said housing. A permanent magnet structure is polarized through its cross-section having a first set of north and south poles on a first surface positioned adjacent the magneto-optic recording element for providing the first magnetic field to the recording element, and a second set of north and south poles on a second surface, and the permanent magnet structure attached to the first rail which enables translational movement of the magnet structure. A first coil is positioned adjacent to the magnet which, when energized, imparts a second magnetic field to the permanent magnet structure for imparting motion to the permanent magnet structure, and a second coil is positioned adjacent to the magnet which, when energized, imparts a third magnetic field to the permanent magnet structure for also imparting motion to the permanent magnet structure.
8 Citations
9 Claims
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1. A translational, bias-field device for a magneto-optical system having a magneto-optical recording element moving through a first magnetic field created by the bias-field device so that information is selectively recorded on or erased from the recording element, the device comprising:
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(a) a housing; (b) a first rail for enabling translational movement attached to said housing; (c) a permanent magnet structure polarized through its cross-section and having a first set of north and south poles on a first surface positioned adjacent the magneto-optic recording element for providing the first magnetic field to the recording element, and a second set of north and south poles on a second surface, and said permanent magnet structure attached to said first rail which enables translational movement of said magnet structure; (d) a first coil positioned adjacent to said magnet structure which, when energized, imparts a second magnetic field to said permanent magnet structure for imparting motion to said permanent magnet structure; and (e) a second coil positioned adjacent to said magnet which, when energized, imparts a third magnetic field to said permanent magnet structure for also imparting motion to said permanent magnet structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification