To stabilize a pressing force of an erasing squeegee which presses an ink ribbon.

The erasing squeegee 3 is formed of a foaming resin, a felt and the like and has a curved shape. A lower part of the erasing squeegee 3 is abutted on and fixed to a wall of an erasure liquid tank 4. The lower part of the erasing squeegee 3 is immersed in a treatment liquid 9, sucks the treatment liquid 9 by a capillary phenomenon and sends it to an upper part. The upper part of the erasing squeegee 3 protrudes from a top surface of the erasure liquid tank 4 and is bonded and layered along a thin leaf spring 8 comprised of a thin metal sheet or a strong resin plate joined to the top surface of the erasure liquid tank 4 except a front end. A tip 3a of the erasing squeegee 3 is pressed in contact with the used ink ribbon 13b by tension (pressing force) urged by the leaf spring 8.