50 by weight of a carbon black tradename m 130 manufactured by cabot corporation and kneading the premix by means of an existing conventional kneader a banbury mixer hidm or the like to prepare a concentrate as an intermediate a concentrate of a colored ink 10 by weight of this concentrate as the intermediate was premixed with 5 by weight of a cyclic alcohol a phytosterol and 90 by weight of a paraffin wax tradename hi mic 2065 manufactured by nippon seiro co ltd and the premix was mixed and kneaded by means of a three roll mill type dispersion mixer to prepare a hot melt colored ink 3 a concentrate as an intermediate of a carbon black a color concentrate was prepared by premixing 40 by weight of a polyethylene resin tradename nuc g 5391 manufactured by nippon unicar co ltd with 50 by weight of a carbon black tradename m 130 manufactured by cabot corporation and 10 by weight of a sugar cane wax and kneading the premix by means of an existing conventional kneader a banbury mixer hidm or the like to prepare a concentrate as an intermediate a concentrate of a colored ink 10 by weight of the concentrate as the intermediate.