公开(公告)号：EP0180242A3

公开(公告)日：1988-01-07

申请号：EP85113929

申请日：1985-11-01

Applicant: TEIJIN LIMITED

Inventor： Michio, Yamaura ,  Toshiaki, Yatabe ,  Hiroshi, Matsuzawa ,  Takashi, Tomie

IPC: G11B05/72 ,  G11B05/706 ,  G11B05/31

CPC classification number: G11B5/00 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/66 ,  G11B5/72 ,  G11B5/85 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12611 ,  Y10T428/265 ,  Y10T428/31

Abstract: A thin film type magnetic recording medium having a durability close to that of the coating type magneting recording medium is provided by a metal oxide protective layer which is formed by a physical vapor deposition.

公开(公告)号：EP0179382A3

公开(公告)日：1987-12-02

申请号：EP85113015

申请日：1985-10-14

Applicant: HITACHI, LTD. ,  Hitachi Maxell Ltd.

Inventor： Futamoto, Masaaki ,  Honda, Yukio ,  Asada, Seiichi ,  Nishimura, Takashi Hitachi Daini Kyoshinryo ,  Yoshida, Kazuetsu ,  Ishihara, Heigo

IPC: G11B05/64 ,  G11B05/72 ,  G11B05/85

CPC classification number: G11B5/72 ,  G11B5/851 ,  Y10S428/90

Abstract: A magnetic recording medium comprising a substrate, a ferromagnetic thin film formed on the substrate, and a protective film formed directly on the ferromagnetic thin film, and a process for producing such magnetic recording medium. The expression "formed directly" refers to the technique for forming the protective film on the ferromagnetic thin film so that the interface therebetween is free from contamination by, for instance, conducting the protective film formation under the vacuum used when forming the ferromagnetic thin film.

公开(公告)号：EP0206115A3

公开(公告)日：1987-05-27

申请号：EP86107953

申请日：1986-06-11

Applicant: HITACHI, LTD.

Inventor： Kokaku, Yuichi ,  Kitoh, Makoto ,  Honda, Yoshinori Hagiwara-sou 101

IPC: G11B05/72 ,  G11B05/84

CPC classification number: G11B5/725 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/30 ,  Y10T428/31678 ,  Y10T428/31721 ,  Y10T428/31786

Abstract: Disclosed is a magnetic recording medium in which a magnetic layer of a ferromagnetic material, a layer of an organic material and a layer of carbon are formed on a substrate in this order. The magnetic recording medium has the benefit of remarkably extended life time because peeling and removing of the carbon protective layer can be prevented so that carbon can exerts its own lubricating action during the sliding contact of the magnetic recording medium with a magnetic head.

Abstract translation: 本发明公开了一种磁记录介质，其中，铁磁材料的磁性层，有机材料层和碳层按此顺序形成在基板上。 由于可以防止碳保护层的剥离和去除，因此磁记录介质具有显着延长的使用寿命的优点，从而在磁记录介质与磁头滑动接触期间碳可以发挥其自身的润滑作用。

公开(公告)号：EP0144070A3

公开(公告)日：1987-03-25

申请号：EP84114419

申请日：1984-11-28

Applicant: SONY CORPORATION

Inventor： Miyazaki, Takahiro

IPC: G11B05/71 ,  G11B05/72

CPC classification number: G11B5/725 ,  G11B5/71 ,  Y10S428/90

Abstract: A magnetic recording medium such as magnetic tape or magnetic disc is disclosed in which a magnetic layer if formed on the non-magnetic base material and in which the fatty acid ester with diglycerol is contained as the lubricant. The fatty acid ester with diglycerol employed as the lubricant is an ester of diglycerol with a saturated or unsaturated fatty acid with 8 to 22 carbon atoms.

公开(公告)号：EP0093194A3

公开(公告)日：1986-01-22

申请号：EP82108607

申请日：1982-09-17

Applicant: Matsushita Electric Industrial Co., Ltd.

Inventor： Suzuki, Takashi ,  Hibino, Kunio ,  Murai, Mikio ,  Fujita, Takashi

IPC: G11B05/72 ,  G11B05/64 ,  H01F10/18

CPC classification number: H01F10/18 ,  G11B5/64 ,  G11B5/72 ,  Y10S428/90 ,  Y10T428/273 ,  Y10T428/31678

Abstract: In a magnetic recording medium having an oxygen-containing thin ferromagnetic metal layer formed on a nonmagnetic substrate, a compound capable of suppressing the hydration of the ferromagnetic metal ions by acting thereon is located on or in the vicinity of the surface of the thin ferromagnetic metal layer. A lubricant may further be applied on the thin ferromagnetic metal layer.

Abstract translation: 在具有在非磁性基板上形成的含氧薄铁磁性金属层的磁记录介质中，能够通过作用在铁磁性金属离子上进行水合抑制的化合物位于薄铁磁性金属的表面上或其附近 层。 润滑剂可以进一步施加在薄铁磁金属层上。

公开(公告)号：EP0239028A3

公开(公告)日：1988-11-09

申请号：EP87104123

申请日：1987-03-20

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventor： Kurokawa, Hideo ,  Mitani, Tsutomu ,  Odagiri, Masaru ,  Yonezawa, Taketoshi

IPC: G11B05/72 ,  G11B05/706

CPC classification number: G11B5/72 ,  G11B5/706 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/30

Abstract: A magnetic recording medium for high density recording is provided with a protective film made of a diamond like carbon film and an organic compound film on a ferromagnetic metal recording film; in order to increase durability and reduce spacing loss.

公开(公告)号：EP0208549A3

公开(公告)日：1988-01-20

申请号：EP86305295

申请日：1986-07-09

Applicant: MITSUBISHI KASEI CORPORATION

Inventor： Yoshitomi, Toshihiko ,  Kobayashi, Yoshimitsu ,  Sasaki, Jun ,  Watanabe, Yukio

IPC: G11B05/72 ,  G11B11/10

CPC classification number: G11B11/10586 ,  G11B5/72 ,  Y10S428/90 ,  Y10T428/265

Abstract: A magneto-optical medium comprises a magnetic layer, a protective layer of a complex oxide containing an oxide of aluminium and a base plate.

公开(公告)号：EP0191281A3

公开(公告)日：1988-01-07

申请号：EP86100037

申请日：1986-01-02

Applicant: International Business Machines Corporation

Inventor： Piltingsrud, Douglas Howard ,  Shen, John Chen Shyan

IPC: G11B05/702 ,  G11B05/72

CPC classification number: C08G18/8077 ,  C08G18/4045 ,  C08G18/58 ,  C08G2270/00 ,  C08L75/04 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/249978 ,  Y10T428/24998 ,  Y10T428/249986 ,  Y10T428/31609 ,  Y10T428/31663 ,  Y10T428/31786 ,  Y10T428/31942 ,  C08L2666/14

Abstract: ® A rigid magnetic storage media coating composition using a high concentration of magnetic particles includes a dual thermoset binder system. The two polymers forming the dual binder system cure during mutually exclusive temperature ranges to form polymer networks that are interpenetrated and entangled. The thermoset polyurethane-melamine/ polyester polymer binder system possesses improved properties including the ability to retain liquid fluorinated polyether lubricant without spin-off. The addition of a small amount of silicone wax to the uncured coating composition enhances composition rheology during spin coating on a rigid substrate.

公开(公告)号：EP0182367A3

公开(公告)日：1987-12-02

申请号：EP85114737

申请日：1985-11-19

Applicant: Hitachi Maxell Ltd.

Inventor： Ichijo, Minoru ,  Ohiwa, Tsunemi ,  Kokai, Fumio ,  Kubota, Takashi ,  Wakai, Kunio

IPC: G11B05/72 ,  G11B05/84

CPC classification number: G11B5/722 ,  G11B5/84 ,  Y10S428/90 ,  Y10T428/31663

Abstract: A magnetic recording medium comprising a substrate, a magnetic layer and a protective layer which consists of an organic polymeric material comprising carbon atom, hydrogen atom and oxygen atom, the content of the oxygen atom increasing towards the outer surface of the protective layer, which has improved durability and corrosion resistance.

公开(公告)号：EP0191323A3

公开(公告)日：1987-05-27

申请号：EP86100771

申请日：1986-01-21

Applicant: International Business Machines Corporation

Inventor： Hilden, Magdalena Maria ,  Lee, Jia-Kuen Jerry ,  Wu, Anthony Wai

IPC: G11B05/72 ,  G11B05/842

CPC classification number: G11B5/72 ,  G11B5/842

Abstract: A thin film of carbon is sputter-deposited as a protective overcoat on the coating of a magnetic recording disk of the type in which the coating includes magnetic particles dispersed in an organic binder. The carbon film exhibits excellent durability and lubricity, thereby eliminating the need to incorporate alumina or other load-bearing particles into the magnetic coating, and eliminating the need for a liquid lubricant on the disk surface.