(19)

(11)

EP 0 146 596 A1

(12)

(43) Date of publication: 03.07.1985 Bulletin 1985/27 (21) Application number: 84902304.0 (22) Date of filing: 25.05.1984

(51) International Patent Classification (IPC):  G11B 23/ 03( . ) (86) International application number: PCT/US1984/000815 (87) International publication number: WO 1984/004737 (06.12.1984 Gazette 1984/28)

(84) Designated Contracting States: FR NL (30) Priority: 31.05.1983 US 19830499669 (71) Applicant: STORAGE TECHNOLOGY PARTNERS II Louisville Colorado 80028 (US)	(72) Inventors: LUNKA, Harold Broomfield, CO 80020 (US) RICKERT, David, W. Boulder, CO 80302 (US) MANES, Kenneth Lafayette, CO 80026 (US) BAER, James, R. Broomfield, CO 80020 (US) COLLINS, Gary, W. Boulder, CO 80301 (US)