Patent ID: 6885390

Claim:
A thermally activating apparatus of a thermosensible adhering sheet comprising: a thermally activating thermal head for heating to activate a thermosensible adhesive layer of the thermosensible adhering sheet constituted by respectively forming a printable face on one side of a sheet-like base member and the thermosensible adhesive layer on other face thereof; a thermally activating platen roller arranged to be opposed to the thermally activating thermal head for pinching the thermosensible adhering sheet between the thermally activating platen roller and the thermally activating thermal head to carry in a predetermined direction; and controlling means for controlling to drive the thermally activating thermal head and the thermally activating platen roller; wherein, in a state in which the thermosensible adhering sheet is not disposed between the thermally activating thermal head and the thermally activating platen roller, the controlling means applies a thermal energy to a remaining substance comprising a thermosensible adhesive or a denatured substance thereof or the like adhered to the thermally activating thermal head and the thermally activating platen roller by making the thermally activating thermal head generate heat and carries a cleaning sheet between the thermally activating platen roller and the thermally activating thermal head by rotating the thermally activating platen roller to thereby transcribe the thermally activated remaining substance onto the cleaning sheet to remove.