Fitzpatrick, Cella, Harper & Scinto
Recording liquid and ink-jet recording process using same
 A recording liquid comprising dyes and a liquid medium, wherein the dyes include a black dye and at least one water-soluble dye of a magenta dye and a yellow dye in combination. The black dye is selected from the group, C.I. Food Black 1, C.I. Acid Black 140 and C.I. Acid Black 187. 
Canon Kabushiki Kaisha
C
C09D
inventional
Tsuyoshi Takao Shoji
Eida Yamamoto Koike