(19)

(11)

EP 0 156 880 A1

(12)

(43) Date of publication: 09.10.1985 Bulletin 1985/41 (21) Application number: 84903605.0 (22) Date of filing: 18.09.1984

(51) International Patent Classification (IPC):  G11B 7/ 0045( . ) G11B 20/ 10( . ) G11B 20/ 14( . ) G11B 27/ 28( . ) G11B 7/ 013( . ) G11B 20/ 12( . ) G11B 20/ 18( . ) G11B 27/ 32( . ) (86) International application number: PCT/US1984/001515 (87) International publication number: WO 1985/001382 (28.03.1985 Gazette 1985/08)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 19.09.1983 US 19830533907 (71) Applicant: STORAGE TECHNOLOGY PARTNERS II Louisville Colorado 80028 (US)	(72) Inventors: CLAY, Donald, W. Lafayette, CO 80026 (US) O'KEEFFE, Michael, J. Longmont, CO 80501 (US) PERERA, S., Robert Boulder, CO 80303 (US) RATHER, Howard, H. Lafayette, CO 80027 (US) RODRIGUEZ, Juan, A. Boulder, CO 80303 (US) RUNDELL, John, P. Broomfield, CO 80020 (US)