Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DARK-YELLOW INK COMPOSITION AND INK SET CONTAINING THE SAME
Document Type and Number:
Japanese Patent JP3656535
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide an ink composition capable of realizing recorded image excellent in color reproducibility and image reproducibility.
SOLUTION: This dark-yellow ink composition is used for recording method at least using two kinds of yellow ink compositions comprising normal-yellow ink composition and dark-yellow ink composition. The dark-yellow ink composition is characterized in that an absolute value of b*/a* of L*a*b* color system calculated from spectroscopic characteristic of a solution diluted to 1000 times by water is ≥0.8 and the b* value is ≥0 and the b* value is smaller than b* value of normal-yellow ink composition calculated from spectroscopic characteristic of a solution diluted to 1000 times by water and at least one kind of first coloring agent selected from a group consisting of compounds represented by formulas (I) and (II) and at least one kind of second coloring agent selected from a group consisting of magenta dye, cyan dye and black dye are contained as a coloring agent.


Inventors:
Kazuhiko Kitamura
Hiroshi Fukumoto
Shinichi Kato
Miharu Kanaya
Application Number:
JP2000294923A
Publication Date:
June 08, 2005
Filing Date:
September 27, 2000
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Seiko Epson Corporation
International Classes:
B41J2/01; B41J2/21; B41M5/00; C07D251/70; C07D401/12; C07D487/22; C09B5/14; C09D11/00; C09D11/326; C09D11/328; C09D11/38; C09D11/40; (IPC1-7): C09D11/00; B41J2/01; B41J2/21; B41M5/00; C09B5/14
Domestic Patent References:
JP2002105366A
JP200043399A
JP2000117960A
JP2000186242A
JP2002538260A
Attorney, Agent or Firm:
Kazuo Sato
Onodera Kyohiro
Konno Akio
Takeyasu Ito