(19)

(11)

EP 1 636 799 A2

(12)

(43) Date of publication: 22.03.2006 Bulletin 2006/12 (21) Application number: 04742904.8 (22) Date of filing: 09.06.2004

(51) International Patent Classification (IPC):  G11B 27/034(1990.01) (86) International application number: PCT/GB2004/002457 (87) International publication number: WO 2004/109699 (16.12.2004 Gazette 2004/51)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK (30) Priority: 09.06.2003 GB 0313216 09.06.2003 US 457265 (71) Applicant: ZOOTECH LIMITED Sheffield S1 4QT (GB)	(72) Inventor: GREEN, Stuart, Antony Sheffield S7 2HF (GB) (74) Representative: Lawman, Matthew John Mitchell et al EIP Fairfax House 15 Fulwood Place London, Greater London WC1V 6HU London, Greater London WC1V 6HU (GB)