发明申请
US20060055750A1 Inkjet recording ink and method of inkjet recording 有权
喷墨记录油墨和喷墨记录方法

  • 专利标题: Inkjet recording ink and method of inkjet recording
  • 专利标题(中): 喷墨记录油墨和喷墨记录方法
  • 申请号: US10525386
    申请日: 2003-07-01
  • 公开(公告)号: US20060055750A1
    公开(公告)日: 2006-03-16
  • 发明人: Toshiki TaguchiTakashi OzawaAkio MiyamotoNaotaka Wachi
  • 申请人: Toshiki TaguchiTakashi OzawaAkio MiyamotoNaotaka Wachi
  • 优先权: JP2002244930 20020826; JP2002250969 20020829; JP2002250995 20020829; JP2002250996 20020829; JP2002251514 20020829; JP2002251515 20020829
  • 国际申请: PCT/JP03/08374 WO 20030701
  • 主分类号: G01D11/00
  • IPC分类号: G01D11/00
Inkjet recording ink and method of inkjet recording
摘要:
The object of the present invention is to provide an inkjet recording ink ensuring excellent ejection stability even after aging of the ink and also exhibiting excellent weather resistance; provide an inkjet recording ink ensuring less blurring of the image drawn, in addition to excellent ejection stability and weather resistance; and provide a yellow ink and a dark yellow ink, which can contribute to realization of a pictorial quality with excellent color balance as a constituent ink of an ink set. These objects of the present invention can be achieved by an inkjet recording ink comprising an aqueous medium containing a yellow dye, particularly, a yellow dye represented by formula (1), having spectral absorption characteristics such that the maximum absorption wavelength is in the region from 390 to 470 nm and the absorption long-wave end has a tailing of a specified value or less, and antioxidative characteristics such that the ozone enforced discoloration rate constant is 5.0×10−2 [hour−1] or less. Furthermore, when the ink contains a diamino compound represented by formula (A), a carbonyl group (or sulfo group or the like)-containing cyclic compound represented by formula (B) and an organic solvent having a specific structure, the effect of the present invention is enhanced.
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