(19)

(11)

EP 1 075 691 A1

(12)

(43) Date of publication: 14.02.2001 Bulletin 2001/07 (21) Application number: 98914352.4 (22) Date of filing: 30.03.1998

(51) International Patent Classification (IPC)7: G11B 5/09 (86) International application number: PCT/US9806/262 (87) International publication number: WO 9950/837 (07.10.1999 Gazette 1999/40)

(84) Designated Contracting States: DE (71) Applicant: STORAGE TECHNOLOGY CORPORATION Louisville, CO 80028-4309 (US)	(72) Inventors: MANTEY, John, Paul Boulder, CO 80303-3504 (US) TRABERT, Steven, Gregory Boulder, CO 80303 (US) GILLINGHAM, Ronald, Dean Longmont, CO 80503 (US) O'DAY, Richard, Lewis Boulder, CO 80303-1107 (US) (74) Representative: Hilleringmann, Jochen, Dipl.-Ing. et al Patentanwältevon Kreisler-Selting-Werner,Bahnhofsvorplatz 1 (Deichmannhaus) 50667 Köln 50667 Köln (DE)