Fitzpatrick, Cella, Harper & Scinto
Recording process and liquid using water-soluble organic solvent
 A recording liquid suitable for use as an ink in an ink jet printing system essentially contains water and a water-soluble organic solvent which dissolves not less than 3 wt. % of a coloring matter which has a water-solubility not greater than 0.1 wt. %. The water-soluble organic solvent has a surface tension not greater than 45 dyne/cm. The recording liquid further contains a surfactant. The recording solution, when used as an ink in an ink jet printing system, can print letters and other information with high degree of stability of the ink jet over a wide range of operating conditions and superior fixing characteristic, as well as high durability of the print against water, even when the printing is conducted on a recording medium having exposed fibers such as an ordinary paper. 
Canon Kabushiki Kaisha
C
C09D
inventional
Shoji Yasuko
Koike Tomida