(19)
(11)EP 3 253 808 A1

(12)

(43)Date of publication:
13.12.2017 Bulletin 2017/50

(21)Application number: 16746306.6

(22)Date of filing:  28.01.2016
(51)International Patent Classification (IPC): 
C08F 220/36(2006.01)
B41M 5/00(2006.01)
C08F 222/02(2006.01)
C09D 11/106(2014.01)
C09D 11/40(2014.01)
B41J 2/01(2006.01)
C08F 212/08(2006.01)
C09D 11/023(2014.01)
C09D 11/30(2014.01)
(86)International application number:
PCT/JP2016/000454
(87)International publication number:
WO 2016/125473 (11.08.2016 Gazette  2016/32)
(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

(30)Priority: 02.02.2015 JP 2015018161
11.09.2015 JP 2015179957

(71)Applicant: Ricoh Company, Ltd.
Tokyo 143-8555 (JP)

(72)Inventors:
  • HARADA, Shigeyuki
    Tokyo 143-8555 (JP)
  • YANAGAWA, Yoshiki
    Tokyo 143-8555 (JP)
  • KATOH, Keita
    Tokyo 143-8555 (JP)
  • FUKUOKA, Masayuki
    Tokyo 143-8555 (JP)
  • NAGAI, Kazukiyo
    Tokyo 143-8555 (JP)
  • KOIZUKA, Yuusuke
    Tokyo 143-8555 (JP)
  • SHIMADA, Tomoyuki
    Tokyo 143-8555 (JP)
  • SABU, Akiyoshi
    Tokyo 143-8555 (JP)

(74)Representative: Lamb, Martin John Carstairs 
Marks & Clerk LLP 90 Long Acre
London WC2E 9RA
London WC2E 9RA (GB)

  


(54)NOVEL COPOLYMER, AQUEOUS INK, AND INK CARTRIDGE