Stamping foil unit

A device for transferring an image-forming layer from a carrier foil of a transfer foil onto a printing sheet, comprising:

• an application unit for applying an adhesive to areas of the printing sheet;
• and
• a foil transfer module for transferring the image-forming layer from the carrier foil onto the printing sheet, the foil transfer module including an impression cylinder and a transfer cylinder that form a transfer nip;
• the device being configured to guide the carrier foil relative to the transfer cylinder such that the carrier foil is placed with a coated side onto a printing sheet guided on the impression cylinder and to further guide the carrier foil under pressure together with the printing sheet through the transfer nip such that the image-forming layer adheres to the printing sheet in the areas furnished with adhesive and is lifted off the carrier foil after the printing sheet exits transfer nip;
• the transfer cylinder having a surface with a covering, the transfer cylinder and covering defining an active surface of the transfer cylinder, the transfer cylinder with the covering being driveable at a speed at the active surface of the transfer cylinder that is up to 3% above a surface velocity of the impression cylinder with the printed sheet and the transfer foil lying thereon.