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Title:
AQUEOUS BLACK RECORDING INK AND INK JET RECORDING METHOD
Document Type and Number:
Japanese Patent JP3486032
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To improve the color tone of recorded images, the print density, the water resistance, the light resistance, and the preservability by dissolving a specified dye mixture in water or a mixed solvent of water and an aqueous organic solvent.
SOLUTION: Color Index Number Food Black 72 and Color Index Number Direct Yellow 132 are mixed in a weight ratio of from 5:1 to 30:1 to obtain a mixed dye. The mixed dye in an amount of 0.1 to 10wt.% is dissolved in a mixed solvent comprising 100 to 5wt.% water and 0 to 95wt.% water-soluble organic solvent and, if necessary, a surfactant, a pH adjuster, a viscosity adjuster, a surface tension adjuster, a mildewproofing agent, etc., are dissolved therein.


Inventors:
Kato, Masahito
Fujioka, Masaya
Kitahara, Takeo
Yamazaki, Hideto
Higashiyama, Shunichi
Application Number:
JP1995000322363
Publication Date:
January 13, 2004
Filing Date:
November 15, 1995
Export Citation:
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Assignee:
BROTHER IND LTD
International Classes:
B41J2/01; B41M5/00; C09B67/22; C09D11/00; C09D11/02; C09D11/033; C09D11/328; C09D11/40; (IPC1-7): C09D11/00
Attorney, Agent or Firm:
安富 康男 (外1名)



 
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