Device and method for printing a wrapper strip

An apparatus for printing a banding strip for documents of value comprising:

• a print head capable of printing more than nine dots;
• a circuit actuatable by print signals which, in response to the print signals, is arranged to activate the print head in accordance with the print signals to thereby print patterns specified by the print signals;
• and
• a current supply unit that supplies current for the circuit and the print head.

An apparatus for printing a banding strip for documents of value, comprising:

• a pin print head comprising a predetermined number of pins movable between a print position and a rest position and for each of the pins a respective coil for movement thereof from the rest position into the print position and a respective return element for movement thereof from the print position back into the rest position;
• a current supply unit providing current for the coils;
• and
• a circuit which is actuatable by print signals and includes the coils, arranged to apply, in dependence on a print signal, a first voltage generated by means of the current supply unit to coils specified by the print signal, so that current is fed respectively to said coils for moving the corresponding pins into the print position, and thereafter applies to the coils specified by the print signal a second voltage which is opposite to the first voltage.

An apparatus for printing a banding strip, comprising:

• a pin print head comprising a predetermined number of pins movable between a print position and a rest position and for each of the pins a respective coil for movement thereof from the rest position into the print position and a respective return element for movement thereof from the print position back into the rest position;
• a circuit actuatable by print signals, which, in response to print signals, activates the print head in accordance with the print signals, to thereby print patterns specified by the print signals;
• and
• a current supply unit providing current for the circuit and by means thereof for the coils, which comprises a charging device connected with an input of the current supply unit, a chargeable element connected with the charging device, and a down converter connected with the chargeable element, which provides the substantially constant output voltage, wherein the charging device charges the chargeable element to a predetermined charging voltage which is greater than the output voltage to be provided by the supply unit, and the down converter is arranged to discharge the chargeable element in order to provide at the output of the supply unit current at the constant output voltage.