To prevent thermal deformation of recording area and unstable carriage or color registration shift of recording sheet due to variation of frictional coefficient.

A pair of carrying rollers are arranged in front and rear of a thermal head. The pair of carrying rollers comprises a capstan roller 22 being driven by a motor, and a pinch roller 23 disposed oppositely thereto. The pinch roller 23 has a pair of roller parts 23b, 23c formed on the opposite sides of a shaft 23a. The roller parts 23b, 23c nip the margins 18b, 18c on the opposite sides of a recording area 18a and carry a color thermal recording sheet 18.