Fitzpatrick, Cella, Harper & Scinto
Ink jet recording process employing ink containing water-soluble dye
 An ink jet recording process employing an ink which comprises a liquid medium containing at least water and an organic solvent and containing therein a water-soluble dye selected from the group consisting of a solubilized vat dye, a solubilized sulfur dye, a leuco salt of a vat dye, and a leuco salt of a sulfur dye. In one embodiment of the invention, the ink can be fixed on a recording medium by oxidation, and is suitable for ink-jet printing. 
Canon Kabushiki Kaisha
C
C09D
inventional
Yasuko Shoji
Tomida Koike