| http://www.w3.org/ns/prov#value | - In this embodiment, especially preferable are combinations of a metal complex azopyrazolone dye of the general formula (I) above, in which at least one of R1 and R2 is an SO3(M1) group and both R3 and R4 are an SO3(M1) group, and a sulforhodamine represented by the general formula (IV) above, in which Z2 is a sulfo group (???SO3 ???) (e.g., C.I. Acid Red 289, C.I. Acid Red 52 and C.I. Acid Red 50)
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