(19)

(11)

EP 3 356 581 A1

(12)

(43) Date of publication: 08.08.2018 Bulletin 2018/32 (21) Application number: 16889590.2 (22) Date of filing: 03.02.2016

(51) International Patent Classification (IPC):  C25D 11/02(2006.01) C25D 11/30(2006.01) C25D 11/16(2006.01) C25D 11/18(2006.01) C25D 11/34(2006.01) (86) International application number: PCT/US2016/016297 (87) International publication number: WO 2017/135939 (10.08.2017 Gazette 2017/32)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (71) Applicant: Hewlett-Packard Development Company, L.P. Houston, Texas 77070 (US)	(72) Inventors: LIAO, Cheng-Feng Taipei City 11568 (TW) WU, Kuan-Ting Taipei City 11568 (TW) TSENG, Weiming Taipei City 11568 (TW) CHU, Hsin-chien Taipei City 11568 (TW) (74) Representative: Haseltine Lake LLP  Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)