Ink-jet ink and method of printing using the same

Details Ink-jet ink and method of printing using the same Ink-jet ink and method of printing using the same

1994-01-18

1995-10-31

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 22H, 106 23H, C09D 1102

Patent

active

054625904

ABSTRACT:
An ink-jet ink contains water, a coloring material and an amine compound represented by the formula: R.sub.1 R.sub.2 R.sub.3 N (I) wherein one or two of R.sub.1, R.sub.2 and R.sub.3 represent(s) (an) alkyl group(s) having 1 to 5 carbon atoms substituted by at least one group selected from the group consisting of a carboxy group, a sulfonic acid group, and a Li, Na, Na, K or ammonium salt thereof, and the remainder represents(s) (an) hydrogen atom(s) or (an) alkyl group(s) having 1 to 5 carbon atoms substituted by a hydroxide group or a carbamoyl group. The pH value of the ink is preferably between 6 to 8. Moreover, printing may be made by applying thermal energy to the ink and forming droplets.
The ink and the method of printing using the ink may prevent the change of the amount of ink droplets due to kogation on a heater even with a long-term use, and may not cause a heater trouble due to the corrosion of materials constantly in contact with ink. Further, even if the ink is stored for a long-period, the pH of the ink may be kept to be stable and clogging of print head may be prevented and change of hue of images may be avoided.

REFERENCES:
patent: 4455168 (1984-06-01), Shimada et al.
patent: 5254159 (1993-10-01), Gundlach et al.
"Grant & Hackh's Chem. Dictionary", 5th Ed. Grant et al. pp. 22 & 23, 1989.

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