A half cutter includes a cutting blade having a blade and a holder to which the blade is fixed, a blade receiving member having a blade receiving surface from and with which the blade is separated and comes into contact, and a spacer having at least one of a holder spacer arranged at the holder which is made of a material that is different from a material of the holder, is provided in the holder to protrude toward the blade receiving surface further than the blade, and generates a gap between the blade and the blade receiving surface and a blade receiving spacer arranged at the blade receiving surface which is made of a material different from a material of the blade receiving member, is provided to protrude from the blade receiving surface, and generates a gap between the blade and the blade receiving surface.