(19)

(11)

EP 1 141 958 A1

(12)

(43) Date of publication: 10.10.2001 Bulletin 2001/41 (21) Application number: 99944685.9 (22) Date of filing: 13.09.1999

(51) International Patent Classification (IPC)7: G11B 23/04, G11B 31/00 (86) International application number: PCT/GB9902/848 (87) International publication number: WO 0016/335 (23.03.2000 Gazette 2000/12)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 14.09.1998 GB 9819927 (71) Applicant: Trisect Limited Newbury RG14 1XW (GB)	(72) Inventors: TOOLEY, Giles, William Newbury RG14 63S (GB) TOOLEY, Jonathan, Harry Andover,Hampshire SP10 1HL (GB) (74) Representative: Atkinson, Ralph et al Atkinson Burrington,25-29 President Buildings,President Way Sheffield S4 7UR Sheffield S4 7UR (GB)