Fitzpatrick, Cella, Harper & Scinto
Recording liquid
 A recording liquid containing as a coloring component a copper phthalocyanine dye having at least one alkali metal sulfonate substituent is provided. The recording liquid is characterized in that the ratio of the integrated peak areas (A/B) in a liquid chromatogram of said dye is at least 1/6, wherein, provided that the retention time of the main peak is taken as 1.00, A and B represent the integrated peak area of the relative retention time of from 0 to 0.80 and that of from 0.85 to 4.00, respectively. 
Canon Kabushiki Kaisha
C
C09D
inventional
Yasumasa Shoji Tomoko Tsuyoshi Masatsune
Yokoyama Koike Komori Eida Kobayashi