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(11)

EP 4 029 193 A1

(12)

(43) Date of publication: 20.07.2022 Bulletin 2022/29 (21) Application number: 20863691.0 (22) Date of filing: 10.09.2020

(51) International Patent Classification (IPC):  H04L 9/32(2006.01) H01L 23/28(2006.01) H01L 23/29(2006.01) (52) Cooperative Patent Classification (CPC): H04L 9/3278; H04L 9/0866; H04L 2209/12 (86) International application number: PCT/US2020/050179 (87) International publication number: WO 2021/050713 (18.03.2021 Gazette 2021/11)

(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: KH MA MD TN (30) Priority: 10.09.2019 US 201962898348 P (71) Applicant: Lexmark International, Inc. Lexington, KY 40550 (US)

(72) Inventors: CASTLE, Scott, Richard Lexington, KY 40509 (US) DALAY, Tristan, Santos Mandaue City, 6014 (PH) MUYSKENS, Robert, Henry Lexington, KY 40513 (US) NAVARRETE, Neilson, Gutay Mandaue City, 6014 (PH) NYSTROM, Brant, Dennis Lexington, KY 40509 (US) PANGBURN, Thomas, Eugene Winchester, KY 40391 (US) RHODUS, Samuel, Leo Lixington, KY 40509 (US) (74) Representative: Cameron Intellectual Property Ltd  Moncrieff House 69 West Nile Street Glasgow G1 2QB Glasgow G1 2QB (GB)