公开(公告)号：SG53034A1

公开(公告)日：1998-09-28

申请号：SG1997002890

申请日：1997-08-08

Applicant: IBM

Inventor： GILLIS DONALD R ,  HOMOLA ANDREW MARIAN ,  JEN DAVID H ,  SCHRECK ERHARD THEODOR

IPC: B01D5/00 ,  B01D53/00 ,  B01D53/04 ,  B01D53/26 ,  F25B21/02 ,  G11B33/14 ,  G11B33/503

Abstract: A contaminant reduction system is shown for a disk drive assembly having a closed interior and slider disk components located therein which would be adversely affected by condensed volatiles generated within the assembly. A Peltier element is located within the closed interior of the disk drive assembly so as to condense volatiles present within the interior at a desired condensation point within the closed interior. A getter material, such as a microporous sintered alumina, is located within the closed interior of the disk drive assembly at the condensation point for permanently trapping and maintaining condensed volatiles which are condensed by the Peltier element.

公开(公告)号：CA2067601C

公开(公告)日：1998-05-05

申请号：CA2067601

申请日：1992-04-29

Applicant: IBM

Inventor： HOMOLA ANDREW MARIAN ,  FOSTER JOHN STUART ,  ALBRECHT THOMAS ROBERT

IPC: G11B21/21 ,  G11B25/04 ,  G11B5/60 ,  G11B5/72

Abstract: A disk file with substantially reduced head-disk spacing and corresponding improvement in recording performance uses a disk coated with a film of conventional high viscosity lubricant, a lubricant reservoir for replenishing the lubricant on the disk over the life of the file, and a transducer carrier with feet which ski on the high viscosity liquid film. The file does not include any means for recirculating the lubricant since the lubricant spins off the disk at a relatively low rate due to its high viscosity. The lubricant reservoir contains a very small amount of lubricant and thus may be maintained inside the substantially sealed disk file. In one embodiment of the invention, the sealed disk file is essentially evacuated. The operation of the disk file in a near vacuum environment is possible because, unlike conventional disk files, air is not required to support an air-bearing head-disk interface and the high vapor pressure of the relatively high molecular weight lubricant prevents its evaporation.

公开(公告)号：DE69314692D1

公开(公告)日：1997-11-27

申请号：DE69314692

申请日：1993-04-20

Applicant: IBM

Inventor： ALBRECHT THOMAS ROBERT ,  DOVEK MORIS MUSA ,  FOSTER JOHN STUART ,  HOMOLA ANDREW MARIAN ,  O'SULLIVAN TIMOTHY CHRISTOPHER

IPC: G11B5/60 ,  G11B21/21 ,  G11B5/48 ,  G11B33/14

Abstract: A data recording disk file of the liquid-bearing type has an improved head-disk interface provided in by a transducer carrier (100) with new properties. The carrier (100) supports a conventional head (109) for reading and writing data to the disk (130). The carrier has an air-bearing surface (110,112) near its front end, a ski pad (118) near its rear end, and a plurality of ski feet or struts (120,122) which support the air-bearing surface off the liquid film (146) of the disk when the disk file is not operating. The air-bearing surface is in the form of a pair of air-bearing rails (110,112) located outboard of the rear ski pad so that no air-bearing effect occurs in the rearward region of the carrier to assure the skiing action of the rear ski pad. As operational speed is approached the air-bearing lifts the struts off the disk and the rear ski pad is the sole ski foot on the liquid film. The rear ski pad has a convexly shaped leading edge which is wider than its trailing edge to minimize static friction and lubricant thinning during skiing, and the angle between the leading and trailing edges of the pad is selected to enable the pad to ski over the wide ranges of carrier-disk velocity which occur as the carrier moves from disk ID to OD.

公开(公告)号：DE69219224D1

公开(公告)日：1997-05-28

申请号：DE69219224

申请日：1992-06-11

Applicant: IBM

Inventor： ALBRECHT THOMAS R ,  FOSTER JOHN STUART ,  HOMOLA ANDREW MARIAN

IPC: G11B21/21 ,  G11B25/04

Abstract: Described is a transducer assembly for use in a disk file which provides substantially reduced head-disk spacing and a corresponding improvement in recording performance. The assembly includes a transducer carrier with feet which ski on a high viscosity liquid film with which the disk is coated. Also described is a disk file incorporating such a transducer assembly.

公开(公告)号：DE3462076D1

公开(公告)日：1987-02-19

申请号：DE3462076

申请日：1984-05-28

Applicant: IBM

Inventor： HOMOLA ANDREW MARIAN ,  SUSSNER HEINRICH

IPC: G11B5/72 ,  C10M103/00 ,  C10N40/18 ,  G11B5/64 ,  G11B5/66 ,  G11B5/71 ,  G11B5/725

Abstract: A magnetic disk is lubricated by being overcoated first with a permanently bound monolayer of silica spheres about 7 nm in diameter and on top of said monolayer a skin-like film of amorphous silica about 2 to 13 nm thick.

公开(公告)号：DE3165604D1

公开(公告)日：1984-09-27

申请号：DE3165604

申请日：1981-01-23

Applicant: IBM

Inventor： HOMOLA ANDREW MARIAN ,  RICE SONDRA LEW

IPC: G11B5/712 ,  C09D5/23 ,  C09D7/12 ,  G11B5/842 ,  H01F1/44 ,  G11B5/84

Abstract: A magnetic dispersion is prepared by adjusting the pH of a mixture containing magnetic particles to a value which results in a positive electrostatic charge on the particles, while a mixture containing colloidal silica particles at the same pH results in negative electrostatic charges on the silica particles. Combining these mixtures causes the silica particles to coat and irreversibly bond to the magnetic particles resulting in better dispersion and less aggregation of the magnetic particles.