Embossing device, embossing method, and embossed can

An embossing device comprising an embossing turret for conducting embossing on a can barrel, wherein the embossing turret is provided with:

• an inner roll and an outer roll which revolve and rotate on its axis around the rotational shaft in a synchronized way;
• a holding means which revolves around the rotational shaft while conducting the predetermined contact and retract movement and the swing movement, thereby to allow the can barrel to rotatably be held;
• a driving means which allows the can barrel which is held by the holding means to rotate on its axis;
• a sensor which detects a match mark on the can barrel;
• an encoder which is attached to the rotational shaft;
• and
• a rotational positioning controller which receives signals from the sensor and the encoder and controls the driving means based on these signals;
• wherein embossing is conducted on the can barrel in the state where the can barrel is rotated on its axis at the same circumferential speed as that of the inner roll.