公开(公告)号：WO1989008914A1

公开(公告)日：1989-09-21

申请号：PCT/US1989000955

申请日：1989-03-09

Applicant: STORAGE TECHNOLOGY CORPORATION

Inventor： STORAGE TECHNOLOGY CORPORATION ,  MELBYE, Hartvig, Edmund

IPC: G11B11/12

CPC classification number: G11B5/1278 ,  G11B11/10508 ,  G11B11/10521 ,  G11B11/10536

Abstract: The apparatus for writing data (109) on a magneto-optic recording medium (100) provides simultaneous erasure of old data and writing of new data with one laser beam (110). This is accomplished by operating the laser (104) in the continuous power mode and reversing the magnetic field in synchronization with the data (109). This apparatus includes an annular or doughnut-shaped magnetic transducer (103) which provides a switchable, vertically oriented magnetic field that is applied to the magneto-optic recording medium (100) through the hole in the annular magnetic transducer (103) and is focused on the surface of the recording medium (100) to provide the heat necessary to render the recording medium (100) susceptible to magnetization.

Abstract translation: 用于在磁光记录介质（100）上写入数据（109）的装置同时擦除旧数据并用一个激光束（110）写入新数据。 这通过以连续功率模式操作激光器（104）并与数据（109）同步地反转磁场来实现。 该装置包括环形或环形磁换能器（103），其提供通过环形磁换能器（103）中的孔施加到磁光记录介质（100）的可切换的垂直取向的磁场，并被聚焦 在记录介质（100）的表面上提供使记录介质（100）易于磁化所需的热量。