(19)

(11)

EP 0 072 854 A1

(12)

(43) Date of publication: 02.03.1983 Bulletin 1983/09 (21) Application number: 82901057.0 (22) Date of filing: 12.02.1982

(51) International Patent Classification (IPC):  B42D 15/ 02( . ) G06K 19/ 00( . ) G07C 9/ 00( . ) G11B 7/ 0033( . ) B42D 15/ 10( . ) G06K 19/ 14( . ) G11B 7/ 00( . ) G11B 7/ 24( . ) (86) International application number: PCT/US1982/000188 (87) International publication number: WO 1982/002969 (02.09.1982 Gazette 1982/21)

(84) Designated Contracting States: AT BE CH DE FR GB LI NL SE (30) Priority: 27.02.1981 US 19810238833 (71) Applicant: DREXLER TECHNOLOGY CORPORATION Palo Alto, CA 94304 (US)	(72) Inventor: DREXLER, Jerome Drexler Technology Corporation Palo Alto, CA 94304 (US) (74) Representative: Daunton, Derek  Barlow, Gillett & Percival 94, Market Street Manchester M1 1PJ Manchester M1 1PJ (GB)