To improve workability and portability by forming the whole of a seal like a card of a specific or smaller thickness and enabling a plurality of kinds of printing bodies of a knife type and a slide type to be accommodated in the seal.

A slide-type printing body 2, a guide 6 and two knife-type printing bodies 3 are fitted to a case 1 and fixed by screws 8. The slide-type printing body 2 moves right along the guide 6. The knife-type printing body 3 moves up and down at a fulcrum of a pin 9. A card has a thickness of not larger than 6mm. Since the seal is shaped like a card in 6mm or smaller thickness, a size of a main body is not restricted by a size of printing characters. Moreover, because of the card-like shape in 6mm or smaller thickness, a plurality of kinds of seals, e.g. private seal, bank seal, etc., can be accommodated in the card.