(19)
(11) EP 2 894 035 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.01.2017 Bulletin 2017/04

(43) Date of publication A2:
15.07.2015 Bulletin 2015/29

(21) Application number: 15150439.6

(22) Date of filing: 08.01.2015
(51) International Patent Classification (IPC): 
B41J 2/175(2006.01)
(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

(30) Priority: 09.01.2014 JP 2014002093
09.01.2014 US 201414151431

(71) Applicant: Riso Kagaku Corporation
Tokyo, 108-8385 (JP)

(72) Inventors:
  • Tominaga, Hirotaka
    Ibaraki, 305-0818 (JP)
  • Shimamura, Norihisa
    Ibaraki, 305-0818 (JP)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) Ink cartridge and mounting/dismounting mechanism for the same


(57) An ink cartridge includes: an ink storage container configured to store ink; a socket portion provided at one end of the ink storage container and configured to be fitted to and detached from a joint portion of a printing machine; an ink supply port provided in the socket portion; an inside plug configured to seal an ink passage to the ink supply port by using a biasing force coming from a direction of the ink storage container; and an inside plug lock portion configured to lock the inside plug at a position where the inside plug is pressed by an insertion shaft, and maintain a locked state of the inside plug independently of a retreating of the insertion shaft to a retreat position after a locking of the inside plug.







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