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    Extrusion coating machine for magnetic tape manufacture
    2.
    发明专利
    Extrusion coating machine for magnetic tape manufacture 未知

    公开(公告)号：FR2734500A1

    公开(公告)日：1996-11-29

    申请号：FR9606400

    申请日：1996-05-23

    Applicant: SONY CORP

    Inventor： MANIWA OSAMU ,  SATO SHOGO

    IPC: B05C5/02 ,  G11B5/845 ,  G11B5/848 ,  B05C1/04 ,  G11B5/85

    Abstract: The coating machine includes a head (2) containing a reservoir (9) of coating material (6). The coating material is deposited on a tape (1) which is displaced continuously while the coating material is extruded from a slot (5) at one end of the head (2). The head does not make contact with the tape. The parts of the head on either side of the slot are made of a magnetic material. A magnetised block (3) is placed on the opposite side of the tape facing the head. The block is shaped to provide an air gap (15) immediately facing the point where the extruded coating material emerges from the head and is deposited on the tape. The gap between the head and the magnetised block is fixed between 0.2 and 0.3 mm.

    4.
    发明专利
    未知

    公开(公告)号：FR2741285B1

    公开(公告)日：2001-06-22

    申请号：FR9614141

    申请日：1996-11-20

    Applicant: SONY CORP

    Inventor： SATO SHOGO ,  MANIWA OSAMU

    IPC: B05D1/26 ,  B05C5/02 ,  B05C9/06 ,  G11B5/848

    Abstract: An applicator in which a coating can be applied to a base material at high speed, a coating film can be thinned and a desired coating film can be obtained when the coating films of two or more layers are simultaneously formed. A die 2 is provided with a slit 5 for a lower layer and a slit 15 for an upper layer which respectively serve to extrude a coating 6 for the lower layer and a coating 16 for the upper layer to the base material. The coatings 6 and 16 are respectively extruded from these slits 5 and 15 to the continuously running base material 1 so that the coating films of two layers are formed. Lower layer lips 4 forming the lower layer slit 5 are provided so as to be not in contact with the base material 1. Upper lips 14 forming the upper layer slit 15 are provided so as to abut on the base material 1. When a magnetic coating is used as the coating 6 for the lower layer, a magnet part may be opposed to the lips 4 for the lower layer by sandwiching the base material 1 therebetween.

    5.
    发明专利
    未知

    公开(公告)号：FR2734500B1

    公开(公告)日：1998-06-12

    申请号：FR9606400

    申请日：1996-05-23

    Applicant: SONY CORP

    Inventor： MANIWA OSAMU ,  SATO SHOGO

    IPC: B05C5/02 ,  G11B5/845 ,  G11B5/848 ,  B05C1/04 ,  G11B5/85

    Abstract: There is provided a coating apparatus capable of achieving high-speed coating and a decrease in thickness of a coating film and obtaining a preferable coating film. In an extrusion type coating apparatus including a die having a coating material reservoir to which a coating material is supplied, the coating material being coated on a continuously traveling support member while the coating material is extruded from a slit formed in a tip of the die, a magnet portion having adjacent tip portions to form a magnetic gap is arranged such that the magnetic portion and the tip portion of the die face each other to interpose the support member therebetween, and upper and lower lips defining the slit at the tip of the die are arranged out of contact with the support member.

    Extrusion applicator for magnetic coating of tape and disc
    6.
    发明专利
    Extrusion applicator for magnetic coating of tape and disc 未知

    公开(公告)号：FR2741285A1

    公开(公告)日：1997-05-23

    申请号：FR9614141

    申请日：1996-11-20

    Applicant: SONY CORP

    Inventor： SATO SHOGO ,  MANIWA OSAMU

    IPC: B05D1/26 ,  B05C5/02 ,  B05C9/06 ,  G11B5/848

    Abstract: The applicator includes a die which has reservoirs of coating material behind. The coating materials (6,16) are delivered through passages (5,15) opening onto the face of the die. The coating is extruded onto a non-magnetic base material, which is continuously displaced past the face of the die. The two slots allow formation of a double-layer coating. A first extrusion block (7) is positioned clear of the surface of the passing base. A second extrusion block (17) is in contact with the passing base, with the layer just deposited running over the edge of the block. A second outlet has the trailing lip (18) recessed so there is room for a second layer to be deposited on top of the first layer.

    MAGNETIC TRANSDUCER HEAD
    7.
    发明专利
    MAGNETIC TRANSDUCER HEAD 未知

    公开(公告)号：AU583320B2

    公开(公告)日：1989-04-27

    申请号：AU5003785

    申请日：1985-11-19

    Applicant: SONY CORP

    Inventor： KOBAYASHI TOMIO ,  SATO HEIKICHI ,  KANO SHOICHI ,  MANIWA OSAMU ,  KONNO SEIKI

    IPC: G11B5/127 ,  G11B5/133 ,  G11B5/187 ,  G11B5/23

    Abstract: A magnetic transducer head wherein confronting surfaces of a pair of magnetic core parts comprised of a ferromagnetic oxide material are notched, and the notch defining surfaces have metallic ferromagnetic layers supported thereby. The method of physical vapor deposition as known per se is used for forming these layers. The transducer coupling gap of each magnetic head is defined by an aligned pair of pole piece layers formed from the deposited metallic ferromagnetic material. The pole piece layers are inclined at a preset angle with respect to the plane of the coupling gap, and have extensions formed of the deposited metallic ferromagnetic material presenting bend contours between the pole piece layers and the lateral sides of the core parts.

    9.
    发明专利
    未知

    公开(公告)号：DE3541762C2

    公开(公告)日：1994-09-01

    申请号：DE3541762

    申请日：1985-11-26

    Applicant: SONY CORP

    Inventor： KOBAYASHI TOMIO ,  KANO SHOICHI ,  MANIWA OSAMU ,  KONNO SEIKI ,  SATO HEIKICHI

    IPC: G11B5/127 ,  G11B5/133 ,  G11B5/187 ,  G11B5/23

    Abstract: A magnetic transducer head wherein confronting surfaces of a pair of magnetic core parts comprised of a ferromagnetic oxide material are notched, and the notch defining surfaces have metallic ferromagnetic layers supported thereby. The method of physical vapor deposition as known per se is used for forming these layers. The transducer coupling gap of each magnetic head is defined by an aligned pair of pole piece layers formed from the deposited metallic ferromagnetic material. The pole piece layers are inclined at a preset angle with respect to the plane of the coupling gap, and have extensions formed of the deposited metallic ferromagnetic material presenting bend contours between the pole piece layers and the lateral sides of the core parts.

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