A hot-melt ink comprising:
a colorant containing C.I. Solvent Yellow 162 or C.I. Solvent Blue 70; a medium in which the colorant is dissolved or dispersed and which contains the following components (a) to (d): (a) at least one resin selected from amide resins, C5 type synthetic petroleum resins and C9 type synthetic petroleum resins; (b) at least one resin selected from rosin resins, terpene resins and terpene phenol resins; (c) at least one wax selected from paraffin waxes, ketone waxes and polyethylene oxide waxes; and (d) at least one wax selected from monoamide waxes and diamide waxes; and an antioxidant.