Ink-jet ink production method and ink-jet recording method

Details Ink-jet ink production method and ink-jet recording method Ink-jet ink production method and ink-jet recording method

2008-03-11

2008-03-11

Lorengo, J. A. (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S031600

Reexamination Certificate

active

11079991

ABSTRACT:
A method of producing an ink-jet ink containing the steps in the order named: (a) dispersing colorant particles, a dispersing agent, and a solvent mixture containing water and a water-soluble organic solvent so as to obtain a dispersion of the colorant particles; (b) filtering the dispersion of the colorant particles using a hollow fiber filter; and (c) applying ultrasonic degassing treatment to the filtered dispersion of the colorant particles to obtain the ink-jet ink, wherein a content of oxygen in the ink-jet ink is not more than 2 ppm based on the total weight of the ink-jet ink.

REFERENCES:
patent: 5373212 (1994-12-01), Beau
patent: 6733113 (2004-05-01), Yoshizawa et al.
patent: 6824260 (2004-11-01), Blease et al.
patent: 2004/0119797 (2004-06-01), Yoshizawa et al.
patent: 2005/0057631 (2005-03-01), Morimoto

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