公开(公告)号：US3665431A

公开(公告)日：1972-05-23

申请号：US3665431D

申请日：1970-06-25

Applicant: IBM

Inventor： ALSTAD JOHN K ,  ARMITAGE JOHN D JR ,  BATE GEOFFREY

IPC: G02F1/09 ,  G11B11/105 ,  G11B5/30

CPC classification number: G11B11/10547 ,  G02F1/09

Abstract: Disclosed herein is a new magneto-optic transducer which orients the transfer film non-parallel to the record storage medium with only an edge of the transfer film adjacent the record storage medium. The magneto-optic transducer also provides a reflecting surface adjacent the surface of the record storage medium on either side of the transfer film so that the magneto-optic Kerr or Faraday Effect may be utilized with the transducer. Furthermore, the reflecting surface permits a focused light beam to be directed near the edge of the transfer film adjacent the storage medium.