Patent ID: 7458740

Claim:
A printer which consists essentially of a print unit, a supply unit for a supply of substrate, and a transport unit deposed between the supply unit and the print unit, said transport unit controlling the tension in the web, wherein said supply unit includes a first holder for rotatably receiving a first web of a first substrate wound into a first roll, and a second holder for rotatably receiving a second web of a second substrate wound into a second roll, a first motor directly operatively connected to the first roll for driving the first roll such that the first web of the first substrate is unwounded from the first roll a second motor directly operatively connected with the second roll for driving the second roll such that the second web of the second substrate is unwounded from the second roll, an actuating unit for actuating the motors and a common switch for selectively connecting the actuating unit to the first or second motor, and a control unit, by means of which the switch connects the actuating unit to the first motor when the printer is configured for printing a first substrate, and the switch connects the actuating unit to the second motor when the printer is configured for printing the second substrate, whereby mutual exclusiveness of activation is achieved.