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(11)

EP 3 942 370 A1

(12)

(43) Date of publication: 26.01.2022 Bulletin 2022/04 (21) Application number: 20778396.0 (22) Date of filing: 17.03.2020

(51) International Patent Classification (IPC):  G03G 21/18(2006.01) G03G 15/08(2006.01) G06K 19/04(2006.01) G03G 21/16(2006.01) G06K 19/06(2006.01) G06K 19/10(2006.01) (52) Cooperative Patent Classification (CPC): G03G 15/0863; G03G 21/1842; G03G 21/1676 (86) International application number: PCT/US2020/023094 (87) International publication number: WO 2020/197844 (01.10.2020 Gazette 2020/40)

(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: 22.03.2019 US 201962822088 P (71) Applicant: Lexmark International, Inc. Lexington, KY 40550 (US)	(72) Inventors: JOHNSON, Virgil Jr. Versailles, KY 40383 (US) WILLIAMSON, Randal, Scott Georgetown, KY 40324 (US) (74) Representative: Cameron Intellectual Property Ltd  Moncrieff House 69 West Nile Street Glasgow G1 2QB Glasgow G1 2QB (GB)