公开(公告)号：MY127186A

公开(公告)日：2006-11-30

申请号：MYPI20013981

申请日：2001-08-24

Applicant: IBM

Inventor： ARMANDO JESUS ARGUMEDO ,  EDWIN RALPH CHILDERS ,  JAMES HOWARD EATON ,  ROBERT GLENN BISKEBORN

IPC: G11B15/60 ,  G11B5/584 ,  G11B17/00

Abstract: A TAPE MOVEMENT CONSTRAINT IS PROVIDED FOR A TAPE DRIVE SYSTEM WHICH MOVES A TAPE LONGITUDINALLY ALONG A TAPE PATH ACCROSS A TAPE HEAD, THE TAPE HAVING LONGITUDINAL TRACKS. THE TAPE HEAD HAS A TRACK FOLLOWING SERVO SYSTEM FOR MOVINGTHE HEAD LATERALLY FOR FOLLOWING LATERAL MOVEMENT OF THE TRACKS, WHERE THE TAPE IS SUBJECT TO LATERAL TRANSIENT MOVEMENT. A TAPE ROLLER BEARING CLOSELY ADJACENT THE TAPE HEAD IS ROTATABLE ABOUT A CENTRAL AXIS PARALLEL TO THE CYLINDRICAL PERIPHERAL SURFACE, ALLOWING THE TAPE FREEDOM OF MOVEMENT IN THE LONGITUDINAL DIRECTION. THE TAPE ROLLER BEARING HAS A FRICTIONAL CYLINDRICAL PERIPHERAL SURFACE FOR CONTACTING AND ENGAGING THE SURFACE OF THE TAPE AND CONSTRAINING MOVEMENT OF THE TAPE IN THE LATERAL DIRECTION, THEREBY REDUCING THE RATE OF THE LATERLA TRANSIENT MOVEMENT OF THE TAPE TO ALLOW THE TRACK FOLLOWING SERVO SYSTEM TO FOLLOW THE REDUCED RATE LATERAL TRANSIENT MOVEMENT OF THE LONGITUDINALTRACKS. ANY POTENTIAL AIR BEARING THAT COULD FORM BETWEEN THE SURFACE OF THE ROLLER BEARING IS COLLAPSED TO INSURE THAT THE ROLLER BEARING FRICTIONALLY CONTACTS AND ENGAGES THE SURFACE OF THE TAPE.

公开(公告)号：MY109291A

公开(公告)日：1996-12-31

申请号：MYPI19931085

申请日：1993-06-07

Applicant: IBM

Inventor： DOUGLAS WAYNE JOHNSON ,  THOMAS ROBERT ALBRECHT ,  STEVEN LLOYD FELDE ,  JAMES HOWARD EATON ,  DON GAYLORD EAST ,  ARMANDO JESUS ARGUMEDO

IPC: G11B23/04 ,  G11B23/037 ,  G11B23/08 ,  G11B23/087

Abstract: THE INVENTION IS A TAPE REEL BRAKE WHICH IS MOUNTED IN A WELL IN THE TOP OF A TAPE REEL HUB. THE WELL IS INSIDE THE TAPE BEARING SURFACE OF THE HUB. THE BRAKE IS MOUNTED TO BE COMPLIANTLY BIASED AWAY FROM THE BASE OF THE WELL. THE HUB IS SEATED AGAINST A FIRST INSIDE SURFACE OF A TAPE CARTRIDGE HOUSING. THE HUB AND BRAKE ARE SEATED IN THE TAPE CARTRIDGE SUCH THAT TEETH ON THE PERIPHERY OF THE BRAKE ARE BIASED AGAINST THE OPPOSITE INSIDE SURFACE OF THE CARTRIDGE HOUSING ABOUT THE PERIPHERY OF AN OPENING THEREIN. THE BIASING OF THE BRAKE AGAINST THE OPPOSITE INSIDE SURFACE BOTH PREVENTS THE ROTATION OF THE REEL AND SHIELDS OUT DUST WHEN THE TAPE CARTRIDGE IS REMOVED FROM A TAPE DRIVE. TO ROTATE THE REEL, A TAPE DRIVE CLUTCH ENTERS THE OPENING IN THE OPPOSITE INSIDE SURFACE AND DEPRESSES THE BRAKE INTO THE WELL TO MATE WITH A SMALLER DIAMETER PORTION OF THE HUB OR A RECESSED PORTION OF THE BRAKE. THE HUB IS ALWAYS MAINTAINED ON THE INSIDE SURFACE OF THE HOUSING, THEREBY ELIMINATING LATERAL MOTION WHICH COULD DISRUPT THE TAPE PATH.(FIG 14)