Title:
水溶性近赤外線吸収色素及びこれを含有する水系インク
Document Type and Number:
Japanese Patent JP5416115
Kind Code:
B2
Abstract:
Coloring matters represented by general formula (1) or salts thereof are simply provided at a low cost as water-soluble coloring matters which exhibit absorption in the near-infrared region. Further, aqueous ink compositions which contain the coloring matters and have excellent storage stability are also provided. In general formula (1), Nc is optionally substituted naphthalocyanine; M is a metal oxide or the like; R1 and R2 are each independently hydrogen or the like; A is a crosslinking group; X and Y are each independently substituted arylamino or the like; k is more than 0 but up to 12 (on average); p is 0 to less than 12; the sum of k and p is more than 0 but up to 12; and any two or the three of R1, R2 and A may be united to form a ring.
Inventors:
Koji Hirota
Takafumi Fujii
Yui Juto
Takafumi Fujii
Yui Juto
Application Number:
JP2010522693A
Publication Date:
February 12, 2014
Filing Date:
July 24, 2009
Export Citation:
Assignee:
NIPPON KAYAKU KABUSHIKI KAISHA
International Classes:
C09B47/00; B41J2/01; B41M5/00; C09D11/00
Domestic Patent References:
| JPH01297293A | 1989-11-30 | |||
| JPH03113849A | 1991-05-15 | |||
| JPH0473188A | 1992-03-09 |
Foreign References:
| WO2009060573A1 | 2009-05-14 | |||
| WO2010013455A1 | 2010-02-04 |
Attorney, Agent or Firm:
Masayuki Masabayashi