公开(公告)号：JPS6085422A

公开(公告)日：1985-05-14

申请号：JP17852684

申请日：1984-08-29

Applicant: BASF AG

Inventor： GIYUNTAA HAIRU ,  HERUBERUTO SHIYUPOORU ,  BUERUNAA RENTSU ,  IEENE KOFUAKUSU ,  BUERUNAA GURAU ,  BUERUNAA BARUTSU ,  AUGUSUTO REENAA

IPC: C08F2/46 ,  C08F283/04 ,  C08G18/67 ,  C08L75/04 ,  C09D5/23 ,  C09D163/00 ,  C09D171/00 ,  C09D171/12 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702

公开(公告)号：JPS6177141A

公开(公告)日：1986-04-19

申请号：JP19006185

申请日：1985-08-30

Applicant: Basf Ag

Inventor： HERUMAN RORAA ,  YOOAHIMU HAKE ,  UBUE BUOBUERIISU ,  AUGUSUTO REENAA ,  BUERUNAA GURAU ,  PEETAA NAAGERU ,  RORANTO FUARUKU

IPC: C08J7/04 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  C10M105/56 ,  C10N40/18 ,  C10N70/00 ,  G11B5/702 ,  G11B5/842

CPC classification number: G11B5/7021 ,  Y10S428/90 ,  Y10T428/31609

公开(公告)号：JPS55125533A

公开(公告)日：1980-09-27

申请号：JP3042280

申请日：1980-03-12

Applicant: BASF AG

Inventor： EKUHARUTO KUNETSURAA ,  ROORANTO KEENIHI ,  EBERUHARUTO KESUTAA ,  BUERUNAA GURAU ,  DEIITAA MAIA

IPC: G11B5/66 ,  G11B5/64 ,  G11B5/65 ,  G11B5/706 ,  G11B5/73 ,  G11B5/85 ,  H01F1/20 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16 ,  H01F41/20

公开(公告)号：JPS61296528A

公开(公告)日：1986-12-27

申请号：JP14503586

申请日：1986-06-23

Applicant: BASF AG

Inventor： BUERUNAA GURAU ,  ARUBERUTO KOORU ,  IEENE KOFUAKUSU ,  BUERUNAA BARUTSU ,  BURUFU MIYUNTSUNAA

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/708 ,  G11B5/72 ,  G11B5/84

公开(公告)号：JPS6069833A

公开(公告)日：1985-04-20

申请号：JP14613184

申请日：1984-07-16

Applicant: BASF AG

Inventor： HERUMAN RORAA ,  AUGUSUTO REENAA ,  YOOAHIMU HATSUKU ,  BUERUNAA GURAU ,  BUERUNAA BARUTSU ,  RAINHORUTO BAURU

IPC: G11B5/842 ,  C09D5/23 ,  C09D7/12 ,  G11B5/70 ,  G11B5/702 ,  G11B5/73 ,  G11B5/735 ,  G11B5/84

公开(公告)号：JPS58204504A

公开(公告)日：1983-11-29

申请号：JP7416783

申请日：1983-04-28

Applicant: Basf Ag

Inventor： MIREENA MERUTSUAA ,  HERUMUUTO YAKUSHIYU ,  BUERUNAA GURAU ,  EEBERUHARUTO KESUTAA ,  BUERUNAA REEZAA ,  RAINHARUTO PORUKE ,  GIYUNTAA SHIEEDERU ,  MANFUREETO OORINGAA ,  GIYUNTAA BUEETO

IPC: G11B5/70 ,  C09D5/23 ,  G11B5/68 ,  G11B5/706 ,  G11B5/84 ,  H01F1/11 ,  H01F1/113 ,  H01F1/44

CPC classification number: G11B5/84 ,  G11B5/70663 ,  Y10S428/906 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/257

公开(公告)号：JPS58115630A

公开(公告)日：1983-07-09

申请号：JP22720082

申请日：1982-12-27

Applicant: BASF AG

Inventor： MIRENA MERUTSUAA ,  NORUBERUTO SHIYUNAIDAA ,  HERUMUUTO KOPUKE ,  KURAUSU SHIETORE ,  EEBAAHARUTO KESUTAA ,  BUERUNAA BARUTSU ,  BUERUNAA GURAU

IPC: C08L75/06 ,  C09D5/23 ,  C09D171/00 ,  C09D171/10 ,  C09D175/06 ,  G11B5/70 ,  G11B5/702 ,  G11B5/84 ,  G11B5/842

公开(公告)号：JPH03171425A

公开(公告)日：1991-07-24

申请号：JP22851690

申请日：1990-08-31

Applicant: BASF AG

Inventor： FURIIDORIHI ZOMAAMAN ,  NORUBERUTO SHIYUNAIDAA ,  GERUTO EERUHARUTO ,  RUUTOBUIHI KURAITONAA ,  BUERUNAA GURAU ,  AUGUSUTO REENAA ,  HANSU RAIHIERUTO

IPC: G11B5/842

Abstract: PURPOSE: To make it possible to obtain a dispersion which is excellent in a dispersion treatment by preparing this dispersion by stirring spherical frictional grinding media having a sp. gr. smaller than the sp. gr. of a magnetic material at a specific number of revolutions in a cylindrical hermetic frictional grinding vessel of a specific size. CONSTITUTION: This dispersion is prepd. by stirring the spherical frictional grinding media, which have the ratio of a length to diameter of 1.3 to 2.5:1, have the sp. gr. smaller than the sp. gr. of the magnetic material and have a diameter from 0.5 to 3mm in the cylindrical hermetic frictional grinding vessel loaded with these media by an anchor mixer or spiral mixer at 50 to 1000R.P.M. As a result, the magnetic material is treated extremely gently treated without damaging the acicular crystals in the shortest possible dispersion treatment time, by which the homogeneous and stable dispersion is obtd.

公开(公告)号：JPH02260111A

公开(公告)日：1990-10-22

申请号：JP31086689

申请日：1989-12-01

Applicant: BASF AG

Inventor： HARUTOMUUTO HIBUSUTO ,  ARENTO BUERUNAA ,  YOOAHIMU HATSUKU ,  HAINRIHI MANSUPERUGAA ,  MIHIYAERU HITSUTSUFUERUTO ,  BUERUNAA GURAU ,  GIYUNTAA HAIRU ,  NORUBERUTO HORU

IPC: G11B23/03 ,  C10M105/34 ,  C10N20/06 ,  C10N40/18 ,  G11B5/64 ,  G11B5/66 ,  G11B5/72 ,  G11B5/725 ,  G11B5/73 ,  G11B5/84 ,  G11B23/033

Abstract: PURPOSE: To obtain a recording carrier having a long operation service life by forming an anti-friction layer having microopen cells and incorporating a liquid lubricant therein. CONSTITUTION: A carbon layer of 10 to 100nm thick is formed by DC magnetron sputtering in Ar under a pressure of 1×10 to 5×10 millibar on the disk- shaped recording carrier consisting of a flexible carrier material and a ferromagnetic metallic thin layer. Next, the liquid lubricant is packed into the microopen cells existing in this carbon layer. A mixture composed of a functional perfluoropolyether compd., fatty acid and fatty acid ester and silicon fluoride or their compds. is used as the lubricant.

公开(公告)号：JPH02152077A

公开(公告)日：1990-06-12

申请号：JP26230789

申请日：1989-10-09

Applicant: BASF AG

Inventor： YOOAHIMU HATSUKU ,  BUERUNAA GURAU ,  BUERUNAA ZUITSUKUMIYURAA ,  HAINRITSUHI MANSUPERUGAA ,  HERUMUUTO YAKUSHIYU

IPC: G11B21/12 ,  G11B5/41 ,  G11B5/54 ,  G11B7/005 ,  G11B11/105 ,  G11B19/04 ,  G11B19/06 ,  G11B33/14

Abstract: PURPOSE: To prevent wear due to the waiting time of a long period on the same track by separating a magnetic head from the track by a prescribed time when the magnetic head being in a waiting position exceeds a prescribed time. CONSTITUTION: The track counter SZ of an abrasion prevention control circuit AB reports a track 7 on which a magnetic head HD is positioned and a timer TIM outputs a start pulse ST when the waiting time of the head HD exceeds the prescribed time. The circuit AB outputs a changeover signal US to change over a changeover switch S2 by receiving the pulse ST. As a result, a positioning device controlling electronic device EP is connected to the circuit AB and separates the head HD from the track via a head positioning device P by the signal of the circuit AB. Then, when an wear prevention period is elapsed, the head HD is returned to be positioned. Thus, damage due to that the head is positioned on the same track for a long time is prevented.