(19)

(11)

EP 0 152 411 A1

(12)

(43) Date of publication: 28.08.1985 Bulletin 1985/35 (21) Application number: 84902493.0 (22) Date of filing: 19.06.1984

(51) International Patent Classification (IPC):  G03G 15/ 16( . ) G03G 5/ 06( . ) G03G 5/ 147( . ) G03G 5/ 02( . ) G03G 5/ 14( . ) G03G 15/ 20( . ) (86) International application number: PCT/US1984/000936 (87) International publication number: WO 1985/000901 (28.02.1985 Gazette 1985/05)

(84) Designated Contracting States: CH DE FR GB LI (30) Priority: 04.08.1983 US 19830520208 (71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY St. Paul, Minnesota 55133-3427 (US)	(72) Inventors: HENDRICKSON, William, A. Saint Paul, MN 55133 (US) EVANS, Jack, L. Saint Paul, MN 55133 (US) WILSON, Robert, W. Saint Paul, MN 55133 (US) PAULSON, Kenneth, R. Saint Paul, MN 55133 (US) (74) Representative: Madgwick, Paul Roland, et al  Ladas & Parry Altheimer Eck 2 D-80331 München D-80331 München (DE)