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Machine translation
1. (WO2011013308) AQUEOUS INK
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2011/013308    International Application No.:    PCT/JP2010/004546
Publication Date: 03.02.2011 International Filing Date: 13.07.2010
IPC:
B41J 2/01 (2006.01), B41M 5/00 (2006.01), C09B 67/20 (2006.01), C09B 67/44 (2006.01), C09C 1/48 (2006.01), C09C 3/08 (2006.01), C09D 11/00 (2014.01), C09D 11/322 (2014.01), C09D 11/38 (2014.01), D06P 5/00 (2006.01)
Applicants: CANON KABUSHIKI KAISHA [JP/JP]; 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 1468501 (JP) (For All Designated States Except US).
YOSHIZAWA, Atsuhito [JP/JP]; (JP) (For US Only).
OKUBO, Taketoshi [JP/JP]; (JP) (For US Only).
NAKAZAWA, Ikuo [JP/JP]; (JP) (For US Only).
KOIKE, Shoji [JP/JP]; (JP) (For US Only)
Inventors: YOSHIZAWA, Atsuhito; (JP).
OKUBO, Taketoshi; (JP).
NAKAZAWA, Ikuo; (JP).
KOIKE, Shoji; (JP)
Agent: ABE, Takuma; C/O CANON KABUSHIKI KAISHA, 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 1468501 (JP)
Priority Data:
2009-179633 31.07.2009 JP
2010-130296 07.06.2010 JP
Title (EN) AQUEOUS INK
(FR) ENCRE À BASE AQUEUSE
Abstract: front page image
(EN)The present invention relates to an aqueous ink having a surface tension of 34 mN/m or less including a self-dispersion pigment and water. In the aqueous ink, the self-dispersion pigment has a plurality of pKa values that are 8.0 or less. Assuming that the lowest pKa value among the plurality of pKa values is pKa1 and the highest pKa value among the plurality of pKa values is pKa2, pKa1 and pKa2 satisfy Mathematical formula (1), and the pH value of the aqueous ink satisfies Mathematical formula (2).
(FR)La présente invention concerne une encre à base aqueuse ayant une tension de surface inférieure ou égale à 34 mN/m comprenant un pigment auto-dispersant et de l'eau. Dans l'encre à base aqueuse, le pigment auto-dispersant a une pluralité de valeurs de pKa qui sont inférieures ou égales à 8,0. En partant du principe que la valeur de pKa la plus faible parmi la pluralité de valeurs de pKa est pKa1 et que la valeur de pKa la plus élevée parmi la pluralité de valeurs de pKa est pKa2, les pKa1 et pKa2 satisfont à la formule mathématique (1), et la valeur du pH de l'encre à base aqueuse satisfait à la formule mathématique (2).
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)