公开(公告)号：US3883892A

公开(公告)日：1975-05-13

申请号：US40697273

申请日：1973-10-16

Applicant: BASF AG

Inventor： KNELLER ECKART ,  KOESTER EBERHARD ,  WUNSCH GERD ,  DEIGNER PAUL ,  GRAW DIETER

IPC: C09D5/23 ,  C09D7/12 ,  G03G5/16 ,  G11B5/02 ,  G11B5/62 ,  G11B5/64 ,  G11B5/70 ,  G11B5/706 ,  G11B23/28 ,  G01D15/12

CPC classification number: G11B23/281 ,  G03G5/16 ,  G11B5/64 ,  G11B5/70 ,  G11B5/706

Abstract: The invention relates to a method of recording magnetic signals on magnetic recording media containing an exchange-anisoptropic material at a temperature lower than, equal to or higher than the Neel temperature of this magnetic material. After the recording has been made, the magnetic recording medium is heated to a temperature equal to, or higher than, the Neel temperature, then cooled down to a temperature below the Neel temperature and the recording temperature, following which it is provided with an indicator which betrays re-heating. The method is suitable for the space-saving and, at the same time, authentic recording and storage of all data and images which are to be preserved without risk of falsification.

Abstract translation: 本发明涉及一种在低于等于或高于该磁性材料的Neel温度的温度下将磁信号记录在含有交换异向材料的磁记录介质上的方法。 在记录完成之后，将磁记录介质加热到等于或高于Neel温度的温度，然后冷却到低于Neel温度和记录温度的温度，随后设置有指示器 它背叛了再加热。

公开(公告)号：FR2556486A1

公开(公告)日：1985-06-14

申请号：FR8418704

申请日：1984-12-07

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  DEIGNER PAUL ,  DIETZE HERBERT ,  VOLKER FRANK ,  WAIDELE OSWALD

IPC: G11B23/087 ,  G11B23/04 ,  G11B15/60

Abstract: A transparent window member for a tape cassette, which together with a reel pressure spring, forms a subassembly of the cassette. The reel pressure spring has a U-shaped central portion, the bight of the U being parallel to the plane of the spring arms, and the reel pressure spring having a longitudinal edge with two transverse slits spaced the same as the legs of the U of the central portion of the pressure spring. The central portion may thus be transversely inserted in the longitudinal edge of the window member and it thus forms a locating element for the pressure spring.

公开(公告)号：CA982419A

公开(公告)日：1976-01-27

申请号：CA168209

申请日：1973-04-09

Applicant: BASF AG

Inventor： DEIGNER PAUL ,  VOIGT JOCHEN ,  KITTLER WOLFRAM ,  LOESER WERNER ,  UHL KARL ,  BACHMANN RUDOLF ,  STABENOW JOACHIM

IPC: B05D7/16 ,  G11B5/64 ,  G11B5/72

Abstract: 1420692 Magnetic recording tape BADISCHE ANILIN- & SODA-FABRIK AG 27 April 1973 [28 April 1972] 20074/73 Heading B2E A thermostable rigid base plated with a firmly adhering film of ferromagnetic metallic material containing cobalt has applied thereto a layer from a solution of at least one film-forming organic coating resin in a volatile solvent, the layer in dried and unbaked condition being not more than 3000A thick, and drying and baking being effected at 200-300‹C for 1-15 hours. Specified resins are polycarbonates, polyurethanes, acrylic polymers, polyglycidal ethers and esters cured with polyamines and polyaminoamides and phenol-amine resins. The ferromagnetic metal may be Co-P, Co-B, Co- Ni, Co-Fe-Ni alloys. Ketones, ethers and hydrocarbons are typical volatile solvents.

公开(公告)号：FR2556486B1

公开(公告)日：1990-08-31

申请号：FR8418704

申请日：1984-12-07

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  DEIGNER PAUL ,  DIETZE HERBERT ,  VOLKER FRANK ,  WAIDELE OSWALD

IPC: G11B23/087 ,  G11B23/04 ,  G11B15/60

Abstract: A transparent window member for a tape cassette, which together with a reel pressure spring, forms a subassembly of the cassette. The reel pressure spring has a U-shaped central portion, the bight of the U being parallel to the plane of the spring arms, and the reel pressure spring having a longitudinal edge with two transverse slits spaced the same as the legs of the U of the central portion of the pressure spring. The central portion may thus be transversely inserted in the longitudinal edge of the window member and it thus forms a locating element for the pressure spring.

公开(公告)号：GB2151583A

公开(公告)日：1985-07-24

申请号：GB8430901

申请日：1984-12-07

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  DEIGNER PAUL ,  DIETZE HERBERT

IPC: G11B23/087

Abstract: A transparent window member for a tape cassette, which together with a reel pressure spring, forms a subassembly of the cassette. The reel pressure spring has a U-shaped central portion, the bight of the U being parallel to the plane of the spring arms, and the reel pressure spring having a longitudinal edge with two transverse slits spaced the same as the legs of the U of the central portion of the pressure spring. The central portion may thus be transversely inserted in the longitudinal edge of the window member and it thus forms a locating element for the pressure spring.

公开(公告)号：CA1003954A

公开(公告)日：1977-01-18

申请号：CA183558

申请日：1973-10-17

Applicant: BASF AG

Inventor： KNELLER ECKART ,  KOESTER EBERHARD ,  WUNSCH GERD ,  DEIGNER PAUL ,  GRAW DIETER

IPC: C09D5/23 ,  C09D7/12 ,  G03G5/16 ,  G11B5/02 ,  G11B5/62 ,  G11B5/64 ,  G11B5/70 ,  G11B5/706 ,  G11B23/28

Abstract: The invention relates to a method of recording magnetic signals on magnetic recording media containing an exchange-anisoptropic material at a temperature lower than, equal to or higher than the Neel temperature of this magnetic material. After the recording has been made, the magnetic recording medium is heated to a temperature equal to, or higher than, the Neel temperature, then cooled down to a temperature below the Neel temperature and the recording temperature, following which it is provided with an indicator which betrays re-heating.

公开(公告)号：GB2151583B

公开(公告)日：1987-05-07

申请号：GB8430901

申请日：1984-12-07

Applicant: BASF AG

Inventor： SCHOETTLE KLAUS ,  DEIGNER PAUL ,  DIETZE HERBERT

IPC: G11B23/087

Abstract: A transparent window member for a tape cassette, which together with a reel pressure spring, forms a subassembly of the cassette. The reel pressure spring has a U-shaped central portion, the bight of the U being parallel to the plane of the spring arms, and the reel pressure spring having a longitudinal edge with two transverse slits spaced the same as the legs of the U of the central portion of the pressure spring. The central portion may thus be transversely inserted in the longitudinal edge of the window member and it thus forms a locating element for the pressure spring.