Abstract: A printer which comprises a printing roll mounted upon a main shaft for rotation, an ink roll presented in axial parallel relationship to said printing roll and having heat-soluble ink, a clutch brake unit operatively connected to said printing roll and ink roll for controlling rotation thereof consonant with the printing interval of material to be printed responsive to a feeding mechanism, an encoder for translating the rate of speed of said material into a pulse of unit length. A heat sleeve is concentrically disposed upon said main shaft for rotation therewith; there being a heater element provided within said heat sleeve. A printing type holder is removably mounted on the outer periphery of said heat sleeve for receiving ink from said ink roller. A power supply shaft cooperates with said feed mechanism, and a quill shaft is provided for operative connection to said power supply shaft to transmit rotation to said printing roll and ink roll.