Optical disk reading and writing system having magnetic write head mounted on an air-bearing slider
January 30, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3660617 3894180 3914541 Hydrodynamic bearing head providing constant spacing Transducer head assembly with fluid bearing and head height control system Fluid cushion turntable for video disc player Support for stabilizing the movement of a magnetic medium over a magnetic head Optical focusing apparatus for the reading of a data medium moving past it Low-friction slide apparatus for optical disc translation stage Air cushion-optical data read head InventorsApplicationNo. 472517 filed on 01/30/1990US Classes:369/13.13, Integral transducers365/122, Magneto-optical369/44.22Lens or mirror floats, (e.g., magnetic field support or lens/mirror can freely float and pivot about its own axis, etc.)ExaminersPrimary: Shepperd, John W.Assistant: Nguyen, Tan T. Foreign Patent References
International ClassesG11B 011/00G11B 007/00 G11C 013/06 AbstractA system for reading and writing binary information onto at least one optical recording surface of a magneto-optical disk includes a hydrodynamic bearing for traveling above the optical recording surface of the magneto-optical disk, an objective lens carried by the hydrodynamic bearing for focusing laser light to heat selected areas on the optical recording surface, and a magnetic writing head also carried by the hydrodynamic bearing for recording selected magnetic orientations, representing binary states, onto the heated areas on the magneto-optical memory disk.Field of SearchHaving specified bearing structureOptical head servo system structure Elastic, flexible, pliant or spring support of lens or mirror Lens or mirror floats, (e.g., magnetic field support or lens/mirror can freely float and pivot about its own axis, etc.) Thermomagnetic recording or transducers Automatic focus control Magneto-optical | |
