公开(公告)号：JPH0830942A

公开(公告)日：1996-02-02

申请号：JP14914295

申请日：1995-06-15

Applicant: IBM

Inventor： TOOMASU ROBAATO ARUBUREHITO ,  ROBAATO KAARU BAARETSUTO ,  JIEIMUZU HAWAADO IITON

IPC: A63F7/02 ,  G11B5/265 ,  G11B5/58 ,  G11B5/584 ,  G11B5/596 ,  G11B21/10

Abstract: PURPOSE: To reduce position signal error and moreover facilitate the detection of the position signal error by executing determination of position with a periodical synchronous feature in the servo pattern detected by servo decoder. CONSTITUTION: A magnetic flux transitional servo pattern is detected by a servo read head 26 and this head 26 generates an analog servo read head signal to be supplied to a signal decoder 36 via a signal line 34. The decoder 36 processes the servo read head signal to generate a positional signal supplied to a servo controller 40 via the signal line 38. The controller 40 generates a servo mechanism control signal then supplies this signal to a head assembly 24 via the control line 24. The servo mechanism of the assembly 24 moves, responsive to the control signal from the controller 40, the head 26 in the moving direction exceeding the width of the servo track 30. The controller 40 monitors the positional signal from the decoder 36 to generate the control signal reaching the desired position. Such signal is equal to the signal appearing when the head has reached the desired position.

公开(公告)号：JPH0612808A

公开(公告)日：1994-01-21

申请号：JP8434093

申请日：1993-04-12

Applicant: IBM

Inventor： TOOMASU ROBAATO ARUBUREHITO ,  MOORISU MUUSA DOOBUEKU ,  JIYON SUCHIYUAATO FUOSUTAA ,  ANDORIYUU MARIAN HOOMORA ,  TEIMOSHII KURISUTOFUAA OSARIBU

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

Abstract: PURPOSE: To provide the liquid bearing type data recording disk file which minimizes the stiction and has the improved head/disk boundary surface that minimizes the consumption of the lubricant from a disk. CONSTITUTION: The improved head/disk boundary surface is provided by a converter carrier 100 which has a new characteristic. The carrier 100 supports a conventional type head 109. The carrier 100 has an air bearing surface located at the front edge, a ski pad 118 located at the rear edge and plural ski legs or struts 120 and 122 which separate air bearing surface rails 110 and 112 from a disk liquid coated film and support while the disk file is not operated. When an operating speed is reached, the air bearing brings up and separates the disk from a struts and the rear section ski pad becomes the only ski leg on a liquid coated film. A projected front edge 124 of the rear section ski pad is wider than a rear edge 130.