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(11)

EP 3 902 681 A1

(12)

(43) Date of publication: 03.11.2021 Bulletin 2021/44 (21) Application number: 19824402.2 (22) Date of filing: 03.12.2019

(51) International Patent Classification (IPC):  B41J 2/165(2006.01) D06P 5/30(2006.01) B41J 3/407(2006.01) (52) Cooperative Patent Classification (CPC): B41J 2/16508; B41J 2002/16594; B41J 2/16532; B41J 2/16523; B41J 11/00216; B41J 2/16547; B41J 3/4078; B41J 11/002; D05C 11/24; D06B 11/0023; D06P 5/30; B41J 11/00218; D05C 13/04 (86) International application number: PCT/JP2019/047262 (87) International publication number: WO 2020/137383 (02.07.2020 Gazette 2020/27)

(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: 28.12.2018 JP 2018248020 24.10.2019 JP 2019193131 (71) Applicant: Ricoh Company, Ltd. Tokyo 143-8555 (JP)	(72) Inventor: YAMASHITA Hiroyuki Tokyo 143-8555 (JP) (74) Representative: SSM Sandmair  Patentanwälte Rechtsanwalt Partnerschaft mbB Joseph-Wild-Straße 20 81829 München 81829 München (DE)