A turning operation of a head set lever is completed, and a printing head can be detached from a carriage part. By the above-described turning operation of the head set lever, a supply port insertion and extraction part connected via a link slides, a needle pipe of the supply port insertion and extraction part is brought into a state of being the farthest from the printing head, and a needle insertion and extraction lever is brought into a state in which it moves under a case wall. Thereby, an operator cannot turn only the needle insertion and extraction lever when the head set lever is in an opened state. In this manner, when the head set lever is in the opened state, the operation of the needle insertion and extraction lever, which is used for connection of the supply port insertion and extraction part to ink supply port, is restricted.