The present invention provides a novel salt-forming type dye represented by the formula: ##STR1## wherein D is a residue of a monoazo or disazo dye, m is an integer of 1 to 3, n is an integer of 1 to 4, and M+ is a cation selected from the group consisting of cations represented by the formulas: ##STR2## wherein R1, R2, R3 and R4 are the same or different and represent hydrogen, an alkyl group, an