公开(公告)号：EP1136987A4

公开(公告)日：2002-11-13

申请号：EP00954935

申请日：2000-08-23

Applicant: SONY CORP

Inventor： KURIHARA KENICHI ,  KISHII NORIYUKI ,  IWAMOTO YUTAKA

IPC: G11B5/187 ,  G11B5/255 ,  G11B5/33 ,  G11B5/40 ,  G11B5/60 ,  G11B5/725 ,  G11B21/21 ,  G11B5/72

CPC classification number: G11B5/725 ,  G11B5/255 ,  G11B5/40 ,  G11B5/6005

Abstract: A magnetic recording and reproducing device comprises a magnetic record medium and a magnetic head including a surface modified chemically with hydrocarbon opposed to the magnetic record medium. The magnetic record medium includes nonmagnetic support having a principal face coated with at least magnetic metal covered with a layer of fluoric lubricant.

公开(公告)号：EP0927992A4

公开(公告)日：1999-09-15

申请号：EP98932583

申请日：1998-07-17

Applicant: SONY CORP

Inventor： KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  KOBAYASHI KEN ,  IWAMOTO YUTAKA ,  MATSUZAWA NOBUYUKI

IPC: C10M171/00 ,  G11B5/71 ,  G11B5/725 ,  C10M105/00 ,  G11B5/72

CPC classification number: C10M171/00 ,  G11B5/71 ,  G11B5/725

Abstract: A magnetic recording medium having the outermost layer holding liquid crystal molecules of specified monocyclic, dicyclic and tricyclic structures as a lubricant; and a magnetic recorder/reproducer having a magnetic recording medium for recording information and a magnetic head for recording/reproducing information on/from the magnetic recording medium, wherein the minimum interval between the geometrical average planes of the magnetic recording medium and the magnetic head is 50 nm or less and liquid crystal molecules of specified structure are held as a lubricant in the outermost layer of the magnetic recording medium. The lubricant contains liquid crystal molecules having phase transition from the solid phase to the liquid phase and intermediate properties between liquid and solid. The lubricant can release the kinetic energy produced by sliding through phase transition. The magnetic recording medium and the magnetic recorder/reproducer can satisfy all the characteristics of durability against continuous sliding, low adhesiveness and high meniscoid force.